{"pageNumber":"1087","pageRowStart":"27150","pageSize":"25","recordCount":46734,"records":[{"id":70024143,"text":"70024143 - 2002 - Characterization of annual reproductive cycles for pond-reared Florida largemouth bass Micropterus salmoides floridanus","interactions":[],"lastModifiedDate":"2012-03-12T17:20:03","indexId":"70024143","displayToPublicDate":"2002-01-01T00:00:00","publicationYear":"2002","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":718,"text":"American Fisheries Society Symposium","active":true,"publicationSubtype":{"id":10}},"title":"Characterization of annual reproductive cycles for pond-reared Florida largemouth bass Micropterus salmoides floridanus","docAbstract":"The annual reproductive cycle of hatchery-raised largemouth bass (Florida subspecies Micropterus salmoides floridanus) was characterized over a one-year period. Largemouth bass have a distinct annual reproductive cycle with a spring spawning season (approximately between mid-January and mid-June). Cycle characterization focused on an evaluation of gonadal development and plasma concentrations of several sex steroids and vitellogenin (VTG). Adult largemouth bass (n = 20: 10 females and 10 males) were collected monthly from hatchery ponds for one full calendar year. Plasma samples were analyzed for estradiol-17?? (E2), 11-ketotestosterone (11-KT), testosterone (T), progesterone (P), and VTG. Gonadal tissues were weighed to calculate gonadosomatic index (GSI) and evaluated histologically to characterize reproductive stage. In both sexes, GSI began to increase in November, and peaked in February-March. Increases in gonad weights were correlated with maturation of gonads as evidenced by histological evaluations. Bass exhibited seasonal changes in plasma sex steroids and VTG. In males, 11-KT was the only sex steroid that showed strong seasonality, with highest values in February. In females, although E2 and T concentrations followed a similar annual cycle, with highest and lowest values in February and August, respectively, the strongest pattern was observed with E2. 11-KT concentrations were less variable across months, and values were about half of those observed in males. In females, P peaked two months after E2, with high values still in May and June and decreased thereafter, and VTG began to increase in October, but peaked a month prior to the observed peaked in E2. VTG was also detected in males but at concentrations that were about 1/12 that of females, and no seasonal pattern was evident. This study is the first to fully characterize the seasonal endocrine cycle for largemouth bass. These data will be useful when conducting reproductive evaluations of free-ranging populations of largemouth bass and for assessing potential reproductive effects due to environmental contaminants in this species. ?? 2002 by the American Fisheries Society.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"American Fisheries Society Symposium","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","issn":"08922284","usgsCitation":"Gross, T., Wieser, C., Sepulveda, M.S., Wiebe, J., Schoeb, T., and Denslow, N., 2002, Characterization of annual reproductive cycles for pond-reared Florida largemouth bass Micropterus salmoides floridanus: American Fisheries Society Symposium, v. 2002, no. 31, p. 205-212.","startPage":"205","endPage":"212","numberOfPages":"8","costCenters":[],"links":[{"id":231986,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"2002","issue":"31","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"5059f4c1e4b0c8380cd4bec5","contributors":{"authors":[{"text":"Gross, T. S.","contributorId":95828,"corporation":false,"usgs":true,"family":"Gross","given":"T. S.","affiliations":[],"preferred":false,"id":400168,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Wieser, C.M. 0000-0002-4342-444X","orcid":"https://orcid.org/0000-0002-4342-444X","contributorId":63197,"corporation":false,"usgs":true,"family":"Wieser","given":"C.M.","affiliations":[],"preferred":false,"id":400166,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Sepulveda, M. S.","contributorId":99918,"corporation":false,"usgs":false,"family":"Sepulveda","given":"M.","email":"","middleInitial":"S.","affiliations":[],"preferred":false,"id":400169,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Wiebe, J.J.","contributorId":11171,"corporation":false,"usgs":true,"family":"Wiebe","given":"J.J.","email":"","affiliations":[],"preferred":false,"id":400165,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Schoeb, T. R.","contributorId":73550,"corporation":false,"usgs":false,"family":"Schoeb","given":"T. R.","affiliations":[],"preferred":false,"id":400167,"contributorType":{"id":1,"text":"Authors"},"rank":5},{"text":"Denslow, N. D.","contributorId":101606,"corporation":false,"usgs":false,"family":"Denslow","given":"N. D.","affiliations":[],"preferred":false,"id":400170,"contributorType":{"id":1,"text":"Authors"},"rank":6}]}}
,{"id":70024989,"text":"70024989 - 2002 - Holocene geomagnetic secular variation recorded by volcanic deposits at Mount St. Helens, Washington","interactions":[],"lastModifiedDate":"2012-03-12T17:20:12","indexId":"70024989","displayToPublicDate":"2002-01-01T00:00:00","publicationYear":"2002","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1109,"text":"Bulletin of Volcanology","active":true,"publicationSubtype":{"id":10}},"title":"Holocene geomagnetic secular variation recorded by volcanic deposits at Mount St. Helens, Washington","docAbstract":"A compilation of paleomagnetic data from volcanic deposits of Mount St. Helens is presented in this report. The database is used to determine signature paleomagnetic directions of products from its Holocene eruptive events, to assign sampled units to their proper eruptive period, and to begin the assembly of a much larger database of paleomagnetic directions from Holocene volcanic rocks in western North America. The paleomagnetic results from Mount St. Helens are mostly of high quality, and generally agree with the division of its volcanic deposits into eruptive episodes based on previous geologic mapping and radiocarbon dates. The Muddy River andesite's paleomagnetic direction, however, indicates that it is more likely part of the Pine Creek eruptive period rather than the Castle Creek period. In addition, the Two-Fingers andesite flow is more likely part of the Middle Kalama eruptive period and not part of the Goat Rocks period. The paleomagnetic data from Mount St. Helens and Mount Hood document variation in the geomagnetic field's pole position over the last ~2,500 years. A distinct feature of the new paleosecular variation (PSV) record, similar to the Fish Lake record (Oregon), indicates a sudden change from rapid clockwise movement of the pole about the Earth's spin axis to relatively slow counterclockwise movement at ???800 to 900 years B.P.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Bulletin of Volcanology","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","doi":"10.1007/s00445-001-0178-x","issn":"02588900","usgsCitation":"Hagstrum, J., Hoblitt, R., Gardner, C.A., and Gray, T., 2002, Holocene geomagnetic secular variation recorded by volcanic deposits at Mount St. Helens, Washington: Bulletin of Volcanology, v. 63, no. 8, p. 545-556, https://doi.org/10.1007/s00445-001-0178-x.","startPage":"545","endPage":"556","numberOfPages":"12","costCenters":[],"links":[{"id":207681,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1007/s00445-001-0178-x"},{"id":232835,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"63","issue":"8","noUsgsAuthors":false,"publicationDate":"2001-11-16","publicationStatus":"PW","scienceBaseUri":"505a31e7e4b0c8380cd5e32e","contributors":{"authors":[{"text":"Hagstrum, J.T.","contributorId":75922,"corporation":false,"usgs":true,"family":"Hagstrum","given":"J.T.","email":"","affiliations":[],"preferred":false,"id":403359,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Hoblitt, R.","contributorId":89536,"corporation":false,"usgs":true,"family":"Hoblitt","given":"R.","affiliations":[],"preferred":false,"id":403361,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Gardner, C. A.","contributorId":75916,"corporation":false,"usgs":true,"family":"Gardner","given":"C.","email":"","middleInitial":"A.","affiliations":[],"preferred":false,"id":403358,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Gray, T.E.","contributorId":76097,"corporation":false,"usgs":true,"family":"Gray","given":"T.E.","email":"","affiliations":[],"preferred":false,"id":403360,"contributorType":{"id":1,"text":"Authors"},"rank":4}]}}
,{"id":70023952,"text":"70023952 - 2002 - Ice-affected streamflow records using tracer-dilution discharge methods","interactions":[],"lastModifiedDate":"2012-03-12T17:20:01","indexId":"70023952","displayToPublicDate":"2002-01-01T00:00:00","publicationYear":"2002","noYear":false,"publicationType":{"id":24,"text":"Conference Paper"},"publicationSubtype":{"id":19,"text":"Conference Paper"},"title":"Ice-affected streamflow records using tracer-dilution discharge methods","docAbstract":"Accurate ice-affected streamflow records are difficult to obtain for several reasons. Problems measuring stage, variable backwater conditions, access limitations in wintertime, and problems measuring flowing water under ice cover all contribute to make ice-affected streamflow records less accurate than open-channel streamflow records. The inaccuracy of ice-affected streamflow records is particularly troublesome for small streams where Instream-Flow water rights exist. The Colorado Water Conservation Board uses these water rights to protect in-stream aquatic communities. In January and February 2002, the U.S. Geological Survey, in cooperation with the Colorado Water Conservation Board, conducted an experiment using a sodium chloride tracer to determine streamflow under ice cover. The purpose of this study is to determine the usefulness and accuracy of ice-affected streamflow records using a sodium chloride tracer that was automatically injected into the stream. The tracer was injected at two gaging stations once per day for up to 25 days. Multiple-parameter water-quality sensors at the two gaging stations monitored background and peak tracer concentrations and conductance. These data were used to determine discharge at each site. A comparison of current-meter measurements to tracer-dilution discharge measurements shows an underestimation of discharge due to inaccuracy of current-meter measurements with ice cover and inconsistent tracer-pump rates caused by partial freezing of the tracer solution in the injection lines.","largerWorkTitle":"Hydraulic Measurements and Experimental Methods","conferenceTitle":"Hydraulic Measurements and Experimental Methods 2002","conferenceDate":"28 July 2002 through 1 August 2002","conferenceLocation":"Estes Park, CO","language":"English","isbn":"0784406553","usgsCitation":"Capesius, J., Sullivan, J., Williams, C., and O’Neill, G.B., 2002, Ice-affected streamflow records using tracer-dilution discharge methods, <i>in</i> Hydraulic Measurements and Experimental Methods, Estes Park, CO, 28 July 2002 through 1 August 2002, p. 311-317.","startPage":"311","endPage":"317","numberOfPages":"7","costCenters":[],"links":[{"id":232055,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505a37f6e4b0c8380cd61306","contributors":{"editors":[{"text":"Wahl T.L.Pugh C.A.Oberg K.A.Vermeyen T.B.Wahl T.L.Pugh C.A.Oberg K.A.Vermeyen T.B.","contributorId":128321,"corporation":true,"usgs":false,"organization":"Wahl T.L.Pugh C.A.Oberg K.A.Vermeyen T.B.Wahl T.L.Pugh C.A.Oberg K.A.Vermeyen T.B.","id":536524,"contributorType":{"id":2,"text":"Editors"},"rank":1}],"authors":[{"text":"Capesius, J.P.","contributorId":73839,"corporation":false,"usgs":true,"family":"Capesius","given":"J.P.","affiliations":[],"preferred":false,"id":399489,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Sullivan, J.R.","contributorId":10676,"corporation":false,"usgs":true,"family":"Sullivan","given":"J.R.","affiliations":[],"preferred":false,"id":399487,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Williams, C.A.","contributorId":79571,"corporation":false,"usgs":true,"family":"Williams","given":"C.A.","email":"","affiliations":[],"preferred":false,"id":399490,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"O’Neill, G. B.","contributorId":72450,"corporation":false,"usgs":true,"family":"O’Neill","given":"G.","email":"","middleInitial":"B.","affiliations":[],"preferred":false,"id":399488,"contributorType":{"id":1,"text":"Authors"},"rank":4}]}}
,{"id":70024973,"text":"70024973 - 2002 - Estimating recharge at Yucca Mountain, Nevada, USA: Comparison of methods","interactions":[],"lastModifiedDate":"2018-09-18T09:16:11","indexId":"70024973","displayToPublicDate":"2002-01-01T00:00:00","publicationYear":"2002","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1923,"text":"Hydrogeology Journal","active":true,"publicationSubtype":{"id":10}},"title":"Estimating recharge at Yucca Mountain, Nevada, USA: Comparison of methods","docAbstract":"Obtaining values of net infiltration, groundwater travel time, and recharge is necessary at the Yucca Mountain site, Nevada, USA, in order to evaluate the expected performance of a potential repository as a containment system for high-level radioactive waste. However, the geologic complexities of this site, its low precipitation and net infiltration, with numerous mechanisms operating simultaneously to move water through the system, provide many challenges for the estimation of the spatial distribution of recharge. A variety of methods appropriate for arid environments has been applied, including water-balance techniques, calculations using Darcy's law in the unsaturated zone, a soil-physics method applied to neutron-hole water-content data, inverse modeling of thermal profiles in boreholes extending through the thick unsaturated zone, chloride mass balance, atmospheric radionuclides, and empirical approaches. These methods indicate that near-surface infiltration rates at Yucca Mountain are highly variable in time and space, with local (point) values ranging from zero to several hundred millimeters per year. Spatially distributed net-infiltration values average 5 mm/year, with the highest values approaching 20 mm/year near Yucca Crest. Site-scale recharge estimates range from less than 1 to about 12 mm/year. These results have been incorporated into a site-scale model that has been calibrated using these data sets that reflect infiltration processes acting on highly variable temporal and spatial scales. The modeling study predicts highly non-uniform recharge at the water table, distributed significantly differently from the non-uniform infiltration pattern at the surface.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Hydrogeology Journal","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","doi":"10.1007/s10040-001-0169-1","issn":"14312174","usgsCitation":"Flint, A.L., Flint, L.E., Kwicklis, E., Fabryka-Martin, J.T., and Bodvarsson, G., 2002, Estimating recharge at Yucca Mountain, Nevada, USA: Comparison of methods: Hydrogeology Journal, v. 10, no. 1, p. 180-204, https://doi.org/10.1007/s10040-001-0169-1.","startPage":"180","endPage":"204","numberOfPages":"25","costCenters":[{"id":154,"text":"California Water Science Center","active":true,"usgs":true}],"links":[{"id":233185,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"},{"id":207903,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1007/s10040-001-0169-1"}],"volume":"10","issue":"1","noUsgsAuthors":false,"publicationDate":"2002-01-11","publicationStatus":"PW","scienceBaseUri":"505a0b3de4b0c8380cd5262c","contributors":{"authors":[{"text":"Flint, A. L.","contributorId":102453,"corporation":false,"usgs":true,"family":"Flint","given":"A.","email":"","middleInitial":"L.","affiliations":[],"preferred":false,"id":403303,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Flint, L. E. 0000-0002-7868-441X","orcid":"https://orcid.org/0000-0002-7868-441X","contributorId":38180,"corporation":false,"usgs":true,"family":"Flint","given":"L.","middleInitial":"E.","affiliations":[],"preferred":false,"id":403299,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Kwicklis, E. M.","contributorId":86377,"corporation":false,"usgs":true,"family":"Kwicklis","given":"E. M.","affiliations":[],"preferred":false,"id":403301,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Fabryka-Martin, J. T.","contributorId":43536,"corporation":false,"usgs":true,"family":"Fabryka-Martin","given":"J.","email":"","middleInitial":"T.","affiliations":[],"preferred":false,"id":403300,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Bodvarsson, G.S.","contributorId":98045,"corporation":false,"usgs":true,"family":"Bodvarsson","given":"G.S.","email":"","affiliations":[],"preferred":false,"id":403302,"contributorType":{"id":1,"text":"Authors"},"rank":5}]}}
,{"id":70024972,"text":"70024972 - 2002 - Evaluation of some random effects methodology applicable to bird ringing data","interactions":[],"lastModifiedDate":"2012-03-12T17:20:09","indexId":"70024972","displayToPublicDate":"2002-01-01T00:00:00","publicationYear":"2002","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":2173,"text":"Journal of Applied Statistics","active":true,"publicationSubtype":{"id":10}},"title":"Evaluation of some random effects methodology applicable to bird ringing data","docAbstract":"Existing models for ring recovery and recapture data analysis treat temporal variations in annual survival probability (S) as fixed effects. Often there is no explainable structure to the temporal variation in S1,..., Sk; random effects can then be a useful model: Si = E(S) + ??i. Here, the temporal variation in survival probability is treated as random with average value E(??2) = ??2. This random effects model can now be fit in program MARK. Resultant inferences include point and interval estimation for process variation, ??2, estimation of E(S) and var (E??(S)) where the latter includes a component for ??2 as well as the traditional component for v??ar(S??\\S??). Furthermore, the random effects model leads to shrinkage estimates, Si, as improved (in mean square error) estimators of Si compared to the MLE, S??i, from the unrestricted time-effects model. Appropriate confidence intervals based on the Si are also provided. In addition, AIC has been generalized to random effects models. This paper presents results of a Monte Carlo evaluation of inference performance under the simple random effects model. Examined by simulation, under the simple one group Cormack-Jolly-Seber (CJS) model, are issues such as bias of ??s2, confidence interval coverage on ??2, coverage and mean square error comparisons for inference about Si based on shrinkage versus maximum likelihood estimators, and performance of AIC model selection over three models: Si ??? S (no effects), Si = E(S) + ??i (random effects), and S1,..., Sk (fixed effects). For the cases simulated, the random effects methods performed well and were uniformly better than fixed effects MLE for the Si.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Journal of Applied Statistics","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","doi":"10.1080/02664760120108755","issn":"02664763","usgsCitation":"Burnham, K., and White, G.C., 2002, Evaluation of some random effects methodology applicable to bird ringing data: Journal of Applied Statistics, v. 29, no. 1-4, p. 245-264, https://doi.org/10.1080/02664760120108755.","startPage":"245","endPage":"264","numberOfPages":"20","costCenters":[],"links":[{"id":207881,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1080/02664760120108755"},{"id":233152,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"29","issue":"1-4","noUsgsAuthors":false,"publicationDate":"2010-05-14","publicationStatus":"PW","scienceBaseUri":"505a0cc5e4b0c8380cd52cb5","contributors":{"authors":[{"text":"Burnham, K.P.","contributorId":63760,"corporation":false,"usgs":true,"family":"Burnham","given":"K.P.","email":"","affiliations":[],"preferred":false,"id":403298,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"White, Gary C.","contributorId":26256,"corporation":false,"usgs":true,"family":"White","given":"Gary","email":"","middleInitial":"C.","affiliations":[],"preferred":false,"id":403297,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}}
,{"id":70024965,"text":"70024965 - 2002 - Determination of melanterite-rozenite and chalcanthite-bonattite equilibria by humidity measurements at 0.1 MPa","interactions":[],"lastModifiedDate":"2021-12-09T16:27:10.884365","indexId":"70024965","displayToPublicDate":"2002-01-01T00:00:00","publicationYear":"2002","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":738,"text":"American Mineralogist","active":true,"publicationSubtype":{"id":10}},"title":"Determination of melanterite-rozenite and chalcanthite-bonattite equilibria by humidity measurements at 0.1 MPa","docAbstract":"<p><span>Melanterite (FeSO</span><sub>4</sub><span>·7H</span><sub>2</sub><span>O)-rozenite (FeSO</span><sub>4</sub><span>·4H</span><sub>2</sub><span>O) and chalcanthite (CuSO</span><sub>4</sub><span>·5H</span><sub>2</sub><span>O)-bonattite (CuSO</span><sub>4</sub><span>·3H</span><sub>2</sub><span>O) equilibria were determined by humidity measurements at 0.1 MPa. Two methods were used; one is the gas-flow-cell method (between 21 and 98 °C), and the other is the humiditybuffer method (between 21 and 70 °C). The first method has a larger temperature uncertainty even though it is more efficient. With the aid of humidity buffers, which correspond to a series of saturated binary salt solutions, the second method yields reliable results as demonstrated by very tight reversals along each humidity buffer. These results are consistent with those obtained by the first method, and also with the solubility data reported in the literature. Thermodynamic analysis of these data yields values of 29.231 ± 0.025 and 22.593 ± 0.040 kJ/mol for standard Gibbs free energy of reaction at 298.15 K and 0.1 MPa for melanterite-rozenite and chalcanthite-bonattite equilibria, respectively. The methods used in this study hold great potential for unraveling the thermodynamic properties of sulfate salts involved in dehydration reactions at near ambient conditions.</span></p>","language":"English","publisher":"De Gruyter","doi":"10.2138/am-2002-0112","usgsCitation":"Chou, I., Seal, R., and Hemingway, B.S., 2002, Determination of melanterite-rozenite and chalcanthite-bonattite equilibria by humidity measurements at 0.1 MPa: American Mineralogist, v. 87, no. 1, p. 108-114, https://doi.org/10.2138/am-2002-0112.","productDescription":"7 p.","startPage":"108","endPage":"114","costCenters":[{"id":49175,"text":"Geology, Energy & Minerals Science Center","active":true,"usgs":true}],"links":[{"id":233043,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"87","issue":"1","noUsgsAuthors":false,"publicationDate":"2002-01-01","publicationStatus":"PW","scienceBaseUri":"5059ffb4e4b0c8380cd4f343","contributors":{"authors":[{"text":"Chou, I.-M. 0000-0001-5233-6479","orcid":"https://orcid.org/0000-0001-5233-6479","contributorId":44283,"corporation":false,"usgs":true,"family":"Chou","given":"I.-M.","affiliations":[{"id":245,"text":"Eastern Mineral and Environmental Resources Science Center","active":true,"usgs":true}],"preferred":false,"id":403282,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Seal, R.R. 0000-0003-0901-2529","orcid":"https://orcid.org/0000-0003-0901-2529","contributorId":90331,"corporation":false,"usgs":true,"family":"Seal","given":"R.R.","affiliations":[],"preferred":false,"id":403283,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Hemingway, B. S.","contributorId":7268,"corporation":false,"usgs":true,"family":"Hemingway","given":"B.","email":"","middleInitial":"S.","affiliations":[],"preferred":false,"id":403281,"contributorType":{"id":1,"text":"Authors"},"rank":3}]}}
,{"id":70024963,"text":"70024963 - 2002 - Development of the permeability/performance reference compound approach for in situ calibration of semipermeable membrane devices","interactions":[],"lastModifiedDate":"2016-11-10T15:46:50","indexId":"70024963","displayToPublicDate":"2002-01-01T00:00:00","publicationYear":"2002","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1565,"text":"Environmental Science & Technology","onlineIssn":"1520-5851","printIssn":"0013-936X","active":true,"publicationSubtype":{"id":10}},"title":"Development of the permeability/performance reference compound approach for in situ calibration of semipermeable membrane devices","docAbstract":"Permeability/performance reference compounds (PRCs) are analytically noninterfering organic compounds with moderate to high fugacity from semipermeable membrane devices (SPMDs) that are added to the lipid prior to membrane enclosure. Assuming that isotropic exchange kinetics (IEK) apply and that SPMD-water partition coefficients are known, measurement of PRC dissipation rate constants during SPMD field exposures and laboratory calibration studies permits the calculation of an exposure adjustment factor (EAF). In theory, PRC-derived EAF ratios reflect changes in SPMD sampling rates (relative to laboratory data) due to differences in exposure temperature, membrane biofouling, and flow velocity-turbulence at the membrane surface. Thus, the PRC approach should allow for more accurate estimates of target solute/vapor concentrations in an exposure medium. Under some exposure conditions, the impact of environmental variables on SPMD sampling rates may approach an order of magnitude. The results of this study suggest that most of the effects of temperature, facial velocity-turbulence, and biofouling on the uptake rates of analytes with a wide range of hydrophobicities can be deduced from PRCs with a much narrower range of hydrophobicities. Finally, our findings indicate that the use of PRCs permits prediction of in situ SPMD sampling rates within 2-fold of directly measured values.","language":"English","publisher":"ACS Publications","doi":"10.1021/es010991w","issn":"0013936X","usgsCitation":"Huckins, J., Petty, J.D., Lebo, J., Almeida, F., Booij, K., Alvarez, D., Cranor, W., Clark, R., and Mogensen, B., 2002, Development of the permeability/performance reference compound approach for in situ calibration of semipermeable membrane devices: Environmental Science & Technology, v. 36, no. 1, p. 85-91, https://doi.org/10.1021/es010991w.","productDescription":"7 p.","startPage":"85","endPage":"91","numberOfPages":"7","costCenters":[{"id":192,"text":"Columbia Environmental Research Center","active":true,"usgs":true}],"links":[{"id":233041,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"},{"id":207817,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1021/es010991w"}],"volume":"36","issue":"1","noUsgsAuthors":false,"publicationDate":"2001-11-22","publicationStatus":"PW","scienceBaseUri":"505a007ce4b0c8380cd4f776","contributors":{"authors":[{"text":"Huckins, J.N.","contributorId":62553,"corporation":false,"usgs":true,"family":"Huckins","given":"J.N.","email":"","affiliations":[],"preferred":false,"id":403275,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Petty, J. D.","contributorId":86722,"corporation":false,"usgs":true,"family":"Petty","given":"J.","email":"","middleInitial":"D.","affiliations":[],"preferred":false,"id":403277,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Lebo, J.A.","contributorId":65533,"corporation":false,"usgs":true,"family":"Lebo","given":"J.A.","affiliations":[],"preferred":false,"id":403276,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Almeida, F.V.","contributorId":21325,"corporation":false,"usgs":true,"family":"Almeida","given":"F.V.","email":"","affiliations":[],"preferred":false,"id":403271,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Booij, K.","contributorId":11065,"corporation":false,"usgs":true,"family":"Booij","given":"K.","email":"","affiliations":[],"preferred":false,"id":403270,"contributorType":{"id":1,"text":"Authors"},"rank":5},{"text":"Alvarez, D.A.","contributorId":39481,"corporation":false,"usgs":true,"family":"Alvarez","given":"D.A.","email":"","affiliations":[],"preferred":false,"id":403273,"contributorType":{"id":1,"text":"Authors"},"rank":6},{"text":"Cranor, W.L.","contributorId":98261,"corporation":false,"usgs":true,"family":"Cranor","given":"W.L.","affiliations":[],"preferred":false,"id":403278,"contributorType":{"id":1,"text":"Authors"},"rank":7},{"text":"Clark, R.C.","contributorId":49952,"corporation":false,"usgs":true,"family":"Clark","given":"R.C.","email":"","affiliations":[],"preferred":false,"id":403274,"contributorType":{"id":1,"text":"Authors"},"rank":8},{"text":"Mogensen, B.B.","contributorId":31179,"corporation":false,"usgs":true,"family":"Mogensen","given":"B.B.","email":"","affiliations":[],"preferred":false,"id":403272,"contributorType":{"id":1,"text":"Authors"},"rank":9}]}}
,{"id":70024946,"text":"70024946 - 2002 - Simulation of the mobility of metal-EDTA complexes in groundwater: The influence of contaminant metals","interactions":[],"lastModifiedDate":"2018-11-26T09:27:30","indexId":"70024946","displayToPublicDate":"2002-01-01T00:00:00","publicationYear":"2002","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1565,"text":"Environmental Science & Technology","onlineIssn":"1520-5851","printIssn":"0013-936X","active":true,"publicationSubtype":{"id":10}},"title":"Simulation of the mobility of metal-EDTA complexes in groundwater: The influence of contaminant metals","docAbstract":"<div class=\"hlFld-Abstract\"><div id=\"abstractBox\"><p class=\"articleBody_abstractText\">Reactive transport simulations were conducted to model chemical reactions between metal−EDTA (ethylenediaminetetraacetic acid) complexes during transport in a mildly acidic quartz−sand aquifer. Simulations were compared with the results of small-scale tracer tests wherein nickel−, zinc−, and calcium−EDTA complexes and free EDTA were injected into three distinct chemical zones of a plume of sewage-contaminated groundwater. One zone had a large mass of adsorbed, sewage-derived zinc; one zone had a large mass of adsorbed manganese resulting from mildly reducing conditions created by the sewage plume; and one zone had significantly less adsorbed manganese and negligible zinc background. The chemical model assumed that the dissolution of iron(III) from metal−hydroxypolymer coatings on the aquifer sediments by the metal−EDTA complexes was kinetically restricted. All other reactions, including metal−EDTA complexation, zinc and manganese adsorption, and aluminum hydroxide dissolution were assumed to reach equilibrium on the time scale of transport; equilibrium constants were either taken from the literature or determined independently in the laboratory. A single iron(III) dissolution rate constant was used to fit the breakthrough curves observed in the zone with negligible zinc background. Simulation results agreed well with the experimental data in all three zones, which included temporal moments derived from breakthrough curves at different distances downgradient from the injections and spatial moments calculated from synoptic samplings conducted at different times. Results show that the tracer cloud was near equilibrium with respect to Fe in the sediment after 11 m of transport in the Zn-contaminated region but remained far from equilibrium in the other two zones. Sensitivity studies showed that the relative rate of iron(III) dissolution by the different metal−EDTA complexes was less important than the fact that these reactions are rate controlled. Results suggest that the published solubility for ferrihydrite reasonably approximates the Fe solubility of the hydroxypolymer coatings on the sediments. Aluminum may be somewhat more soluble than represented by the equilibrium constant for gibbsite, and its dissolution may be rate controlled when reacting with Ca−EDTA complexes.</p></div></div>","language":"English","publisher":"ACS","doi":"10.1021/es010926m","issn":"0013936X","usgsCitation":"Friedly, J., Kent, D., and Davis, J., 2002, Simulation of the mobility of metal-EDTA complexes in groundwater: The influence of contaminant metals: Environmental Science & Technology, v. 36, no. 3, p. 355-363, https://doi.org/10.1021/es010926m.","productDescription":"9 p.","startPage":"355","endPage":"363","costCenters":[{"id":589,"text":"Toxic Substances Hydrology Program","active":true,"usgs":true}],"links":[{"id":232794,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"},{"id":207658,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1021/es010926m"}],"volume":"36","issue":"3","noUsgsAuthors":false,"publicationDate":"2002-01-04","publicationStatus":"PW","scienceBaseUri":"505b90ade4b08c986b319628","contributors":{"authors":[{"text":"Friedly, J.C.","contributorId":62796,"corporation":false,"usgs":true,"family":"Friedly","given":"J.C.","affiliations":[],"preferred":false,"id":403210,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Kent, D.B.","contributorId":16588,"corporation":false,"usgs":true,"family":"Kent","given":"D.B.","email":"","affiliations":[],"preferred":false,"id":403209,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Davis, J.A.","contributorId":71694,"corporation":false,"usgs":true,"family":"Davis","given":"J.A.","email":"","affiliations":[],"preferred":false,"id":403211,"contributorType":{"id":1,"text":"Authors"},"rank":3}]}}
,{"id":70024945,"text":"70024945 - 2002 - Anthropogenic vs. natural pollution: An environmental study of an industrial site under remediation (Naples, Italy)","interactions":[],"lastModifiedDate":"2012-03-12T17:20:11","indexId":"70024945","displayToPublicDate":"2002-01-01T00:00:00","publicationYear":"2002","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1758,"text":"Geochemistry: Exploration, Environment, Analysis","active":true,"publicationSubtype":{"id":10}},"title":"Anthropogenic vs. natural pollution: An environmental study of an industrial site under remediation (Naples, Italy)","docAbstract":"Heavy metal concentrations and Pb isotopic composition were determined in the soils, slags, scums and landfill materials from a shut down industrial (brownfield) site. This was the second largest integrated steelworks in Italy, and is now under remediation by a Government project. It is located in the outskirts of Napoli on the Bagnoli-Fuorigrotta plain (BFP), which is part of the Campi Flegrei (CF) volcanic caldera, where many spas and geothermal springs occur. The purpose of this work is to distinguish the natural (geogenic) component, originated by hydrothermal activity, from anthropogenic contamination owing to industrial activity. 'In-situ sediments' (soils), slags, scums and landfill materials from 20 drill-cores were selected from a network of 197 drills carried out on a 100 ?? 100 m grid, covering the entire brownfield site. In general, heavy metal enrichments in the upper 3 m of the cores strongly suggest mixing between natural (geogenic) and anthropogenic components. Pb isotopic data are suggestive of three potential end members, and confirm the existence of a strong natural component in addition to contamination from anthropogenic activities. The slags, scums and landfill materials have been proved, through mineralogy and leachate experiments, to be geochemically stable; this shows that metal pollutants are not bio-available and, hence, do not pose a risk to future developments on this site. The natural contribution of hydrothermal fluids to soil pollution, in addition to the non-bio-availability of metal pollutants from industrial materials, indicate that heavy metal remediation of soils in this area would be of little use. Continuous discharge from mineralized hydrothermal solutions would cancel out any remediation effort.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Geochemistry: Exploration, Environment, Analysis","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","doi":"10.1144/1467-787302-006","issn":"14677873","usgsCitation":"Tarzia, M., de Vivo, B., Somma, R., Ayuso, R., McGill, R., and Parrish, R., 2002, Anthropogenic vs. natural pollution: An environmental study of an industrial site under remediation (Naples, Italy): Geochemistry: Exploration, Environment, Analysis, v. 2, no. 1, p. 45-56, https://doi.org/10.1144/1467-787302-006.","startPage":"45","endPage":"56","numberOfPages":"12","costCenters":[],"links":[{"id":232793,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"},{"id":207657,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1144/1467-787302-006"}],"volume":"2","issue":"1","noUsgsAuthors":false,"publicationDate":"2022-06-06","publicationStatus":"PW","scienceBaseUri":"5059ec5ce4b0c8380cd4921d","contributors":{"authors":[{"text":"Tarzia, M.","contributorId":86933,"corporation":false,"usgs":true,"family":"Tarzia","given":"M.","affiliations":[],"preferred":false,"id":403207,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"de Vivo, B.","contributorId":50549,"corporation":false,"usgs":false,"family":"de Vivo","given":"B.","affiliations":[],"preferred":false,"id":403204,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Somma, R.","contributorId":72977,"corporation":false,"usgs":true,"family":"Somma","given":"R.","affiliations":[],"preferred":false,"id":403205,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Ayuso, R. A. 0000-0002-8496-9534","orcid":"https://orcid.org/0000-0002-8496-9534","contributorId":27079,"corporation":false,"usgs":true,"family":"Ayuso","given":"R. A.","affiliations":[],"preferred":false,"id":403203,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"McGill, R.A.R.","contributorId":76096,"corporation":false,"usgs":true,"family":"McGill","given":"R.A.R.","email":"","affiliations":[],"preferred":false,"id":403206,"contributorType":{"id":1,"text":"Authors"},"rank":5},{"text":"Parrish, R.R.","contributorId":102242,"corporation":false,"usgs":true,"family":"Parrish","given":"R.R.","email":"","affiliations":[],"preferred":false,"id":403208,"contributorType":{"id":1,"text":"Authors"},"rank":6}]}}
,{"id":70024936,"text":"70024936 - 2002 - Investigations of potential bias in the estimation of lambda using Pradel's (1996) model for capture-recapture data","interactions":[],"lastModifiedDate":"2016-12-14T10:18:20","indexId":"70024936","displayToPublicDate":"2002-01-01T00:00:00","publicationYear":"2002","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":2173,"text":"Journal of Applied Statistics","active":true,"publicationSubtype":{"id":10}},"title":"Investigations of potential bias in the estimation of lambda using Pradel's (1996) model for capture-recapture data","docAbstract":"<p><span>Pradel's (1996) temporal symmetry model permitting direct estimation and modelling of population growth rate, u i , provides a potentially useful tool for the study of population dynamics using marked animals. Because of its recent publication date, the approach has not seen much use, and there have been virtually no investigations directed at robustness of the resulting estimators. Here we consider several potential sources of bias, all motivated by specific uses of this estimation approach. We consider sampling situations in which the study area expands with time and present an analytic expression for the bias in u i We next consider trap response in capture probabilities and heterogeneous capture probabilities and compute large-sample and simulation-based approximations of resulting bias in u i . These approximations indicate that trap response is an especially important assumption violation that can produce substantial bias. Finally, we consider losses on capture and emphasize the importance of selecting the estimator for u i that is appropriate to the question being addressed. For studies based on only sighting and resighting data, Pradel's (1996) u i ' is the appropriate estimator.</span></p>","language":"English","publisher":"Taylor & Francis","doi":"10.1080/02664760120108872","issn":"02664763","usgsCitation":"Hines, J., and Nichols, J., 2002, Investigations of potential bias in the estimation of lambda using Pradel's (1996) model for capture-recapture data: Journal of Applied Statistics, v. 29, no. 1-4, p. 573-587, https://doi.org/10.1080/02664760120108872.","productDescription":"15 p.","startPage":"573","endPage":"587","onlineOnly":"N","additionalOnlineFiles":"N","costCenters":[{"id":531,"text":"Patuxent Wildlife Research Center","active":true,"usgs":true}],"links":[{"id":233218,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"},{"id":207922,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1080/02664760120108872"}],"volume":"29","issue":"1-4","noUsgsAuthors":false,"publicationDate":"2010-05-14","publicationStatus":"PW","scienceBaseUri":"505a3ec1e4b0c8380cd63fea","contributors":{"authors":[{"text":"Hines, James E. jhines@usgs.gov","contributorId":3506,"corporation":false,"usgs":true,"family":"Hines","given":"James E.","email":"jhines@usgs.gov","affiliations":[{"id":531,"text":"Patuxent Wildlife Research Center","active":true,"usgs":true}],"preferred":false,"id":403178,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Nichols, James D. 0000-0002-7631-2890 jnichols@usgs.gov","orcid":"https://orcid.org/0000-0002-7631-2890","contributorId":405,"corporation":false,"usgs":true,"family":"Nichols","given":"James D.","email":"jnichols@usgs.gov","affiliations":[{"id":531,"text":"Patuxent Wildlife Research Center","active":true,"usgs":true}],"preferred":false,"id":403177,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}}
,{"id":70024913,"text":"70024913 - 2002 - GPS in pioneering dynamic monitoring of long-period structures","interactions":[],"lastModifiedDate":"2012-03-12T17:20:11","indexId":"70024913","displayToPublicDate":"2002-01-01T00:00:00","publicationYear":"2002","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1436,"text":"Earthquake Spectra","active":true,"publicationSubtype":{"id":10}},"title":"GPS in pioneering dynamic monitoring of long-period structures","docAbstract":"Global Positioning System (GPS) technology with 10-20-Hz sampling rates allows scientifically justified dynamic measurements of relative displacements of long-period structures. The displacement response of a simulated tall building in real time and permanent deployment of GPS units at the roof of a building are described. To the authors' best knowledge, this is the first permanent deployment of GPS units (in the world) for continuous dynamic monitoring of a tall building. Data recorded from the building during a windy day is analyzed to determine the structural characteristics. When recorded during extreme motions caused by earthquakes and strong winds, such measurements can be used to compute average drift ratios and changes in dynamic characteristics, and therefore can be used by engineers and building owners or managers to assess the structural integrity and performance by establishing pre-established thresholds. Such information can be used to secure public safety and/or take steps to improve the performance of the building.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Earthquake Spectra","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","doi":"10.1193/1.1461375","issn":"87552930","usgsCitation":"Çelebi, M., and Sanli, A., 2002, GPS in pioneering dynamic monitoring of long-period structures: Earthquake Spectra, v. 18, no. 1, p. 47-61, https://doi.org/10.1193/1.1461375.","startPage":"47","endPage":"61","numberOfPages":"15","costCenters":[],"links":[{"id":207702,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1193/1.1461375"},{"id":232862,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"18","issue":"1","noUsgsAuthors":false,"publicationDate":"2002-02-01","publicationStatus":"PW","scienceBaseUri":"505a147ce4b0c8380cd54a5f","contributors":{"authors":[{"text":"Çelebi, M.","contributorId":36946,"corporation":false,"usgs":true,"family":"Çelebi","given":"M.","affiliations":[],"preferred":false,"id":403097,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Sanli, A.","contributorId":98503,"corporation":false,"usgs":true,"family":"Sanli","given":"A.","affiliations":[],"preferred":false,"id":403098,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}}
,{"id":70024904,"text":"70024904 - 2002 - Approaches for the direct estimation of lambda, and demographic contributions to lambda, using capture-recapture data","interactions":[],"lastModifiedDate":"2016-12-14T10:16:56","indexId":"70024904","displayToPublicDate":"2002-01-01T00:00:00","publicationYear":"2002","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":2173,"text":"Journal of Applied Statistics","active":true,"publicationSubtype":{"id":10}},"title":"Approaches for the direct estimation of lambda, and demographic contributions to lambda, using capture-recapture data","docAbstract":"<p><span>We first consider the estimation of the finite rate of population increase or population growth rate, u i , using capture-recapture data from open populations. We review estimation and modelling of u i under three main approaches to modelling openpopulation data: the classic approach of Jolly (1965) and Seber (1965), the superpopulation approach of Crosbie &amp; Manly (1985) and Schwarz &amp; Arnason (1996), and the temporal symmetry approach of Pradel (1996). Next, we consider the contributions of different demographic components to u i using a probabilistic approach based on the composition of the population at time i + 1 (Nichols et al., 2000b). The parameters of interest are identical to the seniority parameters, n i , of Pradel (1996). We review estimation of n i under the classic, superpopulation, and temporal symmetry approaches. We then compare these direct estimation approaches for u i and n i with analogues computed using projection matrix asymptotics. We also discuss various extensions of the estimation approaches to multistate applications and to joint likelihoods involving multiple data types.</span></p>","language":"English","publisher":"Taylor & Francis","doi":"10.1080/02664760120108809","issn":"02664763","usgsCitation":"Nichols, J., and Hines, J., 2002, Approaches for the direct estimation of lambda, and demographic contributions to lambda, using capture-recapture data: Journal of Applied Statistics, v. 29, no. 1-4, p. 539-568, https://doi.org/10.1080/02664760120108809.","productDescription":"30 p.","startPage":"539","endPage":"568","onlineOnly":"N","additionalOnlineFiles":"N","costCenters":[{"id":531,"text":"Patuxent Wildlife Research Center","active":true,"usgs":true}],"links":[{"id":233289,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"},{"id":207965,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1080/02664760120108809"}],"volume":"29","issue":"1-4","noUsgsAuthors":false,"publicationDate":"2010-05-14","publicationStatus":"PW","scienceBaseUri":"5059ece1e4b0c8380cd4952a","contributors":{"authors":[{"text":"Nichols, James D. 0000-0002-7631-2890 jnichols@usgs.gov","orcid":"https://orcid.org/0000-0002-7631-2890","contributorId":405,"corporation":false,"usgs":true,"family":"Nichols","given":"James D.","email":"jnichols@usgs.gov","affiliations":[{"id":531,"text":"Patuxent Wildlife Research Center","active":true,"usgs":true}],"preferred":false,"id":403069,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Hines, James E. jhines@usgs.gov","contributorId":3506,"corporation":false,"usgs":true,"family":"Hines","given":"James E.","email":"jhines@usgs.gov","affiliations":[{"id":531,"text":"Patuxent Wildlife Research Center","active":true,"usgs":true}],"preferred":false,"id":403070,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}}
,{"id":70024902,"text":"70024902 - 2002 - Modelling postfledging survival and age- specific breeding probabilities in species with delayed maturity: A case study of Roseate Terns at Falkner Island, Connecticut","interactions":[],"lastModifiedDate":"2012-03-12T17:20:08","indexId":"70024902","displayToPublicDate":"2002-01-01T00:00:00","publicationYear":"2002","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":2173,"text":"Journal of Applied Statistics","active":true,"publicationSubtype":{"id":10}},"title":"Modelling postfledging survival and age- specific breeding probabilities in species with delayed maturity: A case study of Roseate Terns at Falkner Island, Connecticut","docAbstract":"We modelled postfledging survival and age-specific breeding probabilities in endangered Roseate Terns (Sterna dougallii) at Falkner Island, Connecticut, USA using capture-recapture data from 1988-1998 of birds ringed as chicks and as adults. While no individuals bred as 2-year-olds during this period, about three-quarters of the young that survived and returned as 3-year-olds nested, and virtually all surviving birds had begun breeding by the time they reached 5 years of age. We found no evidence of temporal variation age of first breeding of birds from different cohorts. There was significant temporal variation in the annual survival of adults and the survival over the typical 3-year maturation period of prebreeding birds, with extremely low values for both groups from the 1991 breeding season. The estimated overwinter survival rate (0.62) for adults from 1991-1992 was about three-quarters the usual rate of about 0.83, but the low survival of fledglings from 1991 resulted in less than 25% of the otherwise expected number of young from that cohort returning as breeding birds; this suggests that fledglings suffered a greater proportional decrease in survival than did adults. The survival estimates of young from 1989 and 1990 show that these cohorts were not negatively influenced by the events that decimated the young from 1991, and the young from 1992 and 1993 had above-average survival estimates. The apparent decrease since 1996 in development of fidelity of new recruits to this site is suspected to be due mainly to nocturnal disturbance and predation of chicks causing low productivity.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Journal of Applied Statistics","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","doi":"10.1080/02664760120108764","issn":"02664763","usgsCitation":"Spendelow, J., Nichols, J., Hines, J., Lebreton, J., and Pradel, R., 2002, Modelling postfledging survival and age- specific breeding probabilities in species with delayed maturity: A case study of Roseate Terns at Falkner Island, Connecticut: Journal of Applied Statistics, v. 29, no. 1-4, p. 385-405, https://doi.org/10.1080/02664760120108764.","startPage":"385","endPage":"405","numberOfPages":"21","costCenters":[],"links":[{"id":207963,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1080/02664760120108764"},{"id":233287,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"29","issue":"1-4","noUsgsAuthors":false,"publicationDate":"2010-05-14","publicationStatus":"PW","scienceBaseUri":"505a5c70e4b0c8380cd6fcc4","contributors":{"authors":[{"text":"Spendelow, J. A. 0000-0001-8167-0898","orcid":"https://orcid.org/0000-0001-8167-0898","contributorId":72478,"corporation":false,"usgs":true,"family":"Spendelow","given":"J. A.","affiliations":[],"preferred":false,"id":403063,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Nichols, J.D. 0000-0002-7631-2890","orcid":"https://orcid.org/0000-0002-7631-2890","contributorId":14332,"corporation":false,"usgs":true,"family":"Nichols","given":"J.D.","affiliations":[],"preferred":false,"id":403061,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Hines, J.E. 0000-0001-5478-7230","orcid":"https://orcid.org/0000-0001-5478-7230","contributorId":36885,"corporation":false,"usgs":true,"family":"Hines","given":"J.E.","affiliations":[{"id":531,"text":"Patuxent Wildlife Research Center","active":true,"usgs":true}],"preferred":false,"id":403062,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Lebreton, J.D.","contributorId":104186,"corporation":false,"usgs":true,"family":"Lebreton","given":"J.D.","affiliations":[],"preferred":false,"id":403065,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Pradel, R.","contributorId":85692,"corporation":false,"usgs":true,"family":"Pradel","given":"R.","affiliations":[],"preferred":false,"id":403064,"contributorType":{"id":1,"text":"Authors"},"rank":5}]}}
,{"id":70024881,"text":"70024881 - 2002 - Re-analysis of a banding study to test the effects of an experimental increase in bag limits of mourning doves","interactions":[],"lastModifiedDate":"2012-03-12T17:20:10","indexId":"70024881","displayToPublicDate":"2002-01-01T00:00:00","publicationYear":"2002","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":2173,"text":"Journal of Applied Statistics","active":true,"publicationSubtype":{"id":10}},"title":"Re-analysis of a banding study to test the effects of an experimental increase in bag limits of mourning doves","docAbstract":"In 1966-1971, eastern US states with hunting seasons on mourning doves (Zenaida macroura) participated in a study designed to estimate the effects of bag limit increases on population survival rates. More than 400 000 adult and juvenile birds were banded and released during this period, and subsequent harvest and return of bands, together with total harvest estimates from mail and telephone surveys of hunters, provided the database for analysis. The original analysis used an ANOVA framework, and resulted in inferences of no effect of bag limit increase on population parameters (Hayne 1975). We used a logistic regression analysis to infer that the bag limit increase did not cause a biologically significant increase in harvest rate and thus the experiment could not provide any insight into the relationship between harvest and annual survival rates. Harvest rate estimates of breeding populations from geographical subregions were used as covariates in a Program MARK analysis and revealed an association between annual survival and harvest rates, although this relationship is potentially confounded by a latitudinal gradient in survival rates of dove populations. We discuss methodological problems encountered in the analysis of these data, and provide recommendations for future studies of the relationship between harvest and annual survival rates of mourning dove populations.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Journal of Applied Statistics","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","doi":"10.1080/02664760120108539","issn":"02664763","usgsCitation":"Otis, D.L., and White, G.C., 2002, Re-analysis of a banding study to test the effects of an experimental increase in bag limits of mourning doves: Journal of Applied Statistics, v. 29, no. 1-4, p. 479-495, https://doi.org/10.1080/02664760120108539.","startPage":"479","endPage":"495","numberOfPages":"17","costCenters":[],"links":[{"id":207747,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1080/02664760120108539"},{"id":232933,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"29","issue":"1-4","noUsgsAuthors":false,"publicationDate":"2010-05-14","publicationStatus":"PW","scienceBaseUri":"505a956ee4b0c8380cd819ea","contributors":{"authors":[{"text":"Otis, David L.","contributorId":64396,"corporation":false,"usgs":true,"family":"Otis","given":"David","email":"","middleInitial":"L.","affiliations":[],"preferred":false,"id":402995,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"White, Gary C.","contributorId":26256,"corporation":false,"usgs":true,"family":"White","given":"Gary","email":"","middleInitial":"C.","affiliations":[],"preferred":false,"id":402994,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}}
,{"id":70024858,"text":"70024858 - 2002 - Space use, migratory connectivity, and population segregation among Willets breeding in the western Great Basin","interactions":[],"lastModifiedDate":"2021-12-22T16:56:14.513477","indexId":"70024858","displayToPublicDate":"2002-01-01T00:00:00","publicationYear":"2002","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1318,"text":"Condor","active":true,"publicationSubtype":{"id":10}},"title":"Space use, migratory connectivity, and population segregation among Willets breeding in the western Great Basin","docAbstract":"<p>Western Willets (<i>Catoptrophorus semipalmatus inornatus</i>) were banded (n = 146 breeding adults and chicks) and radio-marked (n = 68 adults) at three western Great Basin wetland complexes to determine inter- and intraseasonal space use and movement patterns (primarily in 1998 and 1999). Birds were then tracked to overwintering sites where migratory connectivity and local movements were documented. Willets arrived synchronously at breeding sites during mid-April and spent less than 12 weeks in the Great Basin. There were no movements to other sites in the Great Basin during the breeding or postbreeding season. However, most breeding birds moved locally on a daily basis from upland nest sites to wetland foraging sites. The mean distance breeding birds were detected from nests did not differ between sexes or between members of a pair, although these distances were greater among postbreeding than breeding birds. Home-range estimates did not differ significantly between paired males and females during breeding or postbreeding. However, female home ranges were larger following breeding than during breeding. Shortly after chicks fledged, adult Willets left the Great Basin for locations primarily at coastal and estuarine sites in the San Francisco Bay area. Limited data revealed little among-site movements once Willets arrived at the coast, and birds appeared to be site faithful in subsequent winters. Winter sites of western Great Basin Willets differed from those used by birds from other areas in the subspecies' range, suggesting another subspecies or distinct population segment may exist. This study illustrates the importance of understanding movements and space use throughout the annual cycle in conservation planning.</p>","language":"English","publisher":"Oxford Academic","doi":"10.1093/condor/104.3.620","usgsCitation":"Haig, S.M., Oring, L., Sanzenbacher, P., and Taft, O., 2002, Space use, migratory connectivity, and population segregation among Willets breeding in the western Great Basin: Condor, v. 104, no. 3, p. 620-630, https://doi.org/10.1093/condor/104.3.620.","productDescription":"11 p.","startPage":"620","endPage":"630","costCenters":[{"id":289,"text":"Forest and Rangeland Ecosys Science Center","active":true,"usgs":true}],"links":[{"id":478645,"rank":1,"type":{"id":40,"text":"Open Access Publisher Index Page"},"url":"https://doi.org/10.1093/condor/104.3.620","text":"Publisher Index Page"},{"id":233108,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"country":"United States","state":"California, Oregon","geographicExtents":"{\n  \"type\": \"FeatureCollection\",\n  \"features\": [\n    {\n      \"type\": \"Feature\",\n      \"properties\": {},\n      \"geometry\": {\n        \"type\": \"Polygon\",\n        \"coordinates\": [\n          [\n            [\n              -121.88232421875,\n              39.53793974517628\n            ],\n            [\n              -120.1904296875,\n              39.53793974517628\n            ],\n            [\n              -120.1904296875,\n              42.956422511073335\n            ],\n            [\n              -121.88232421875,\n              42.956422511073335\n            ],\n            [\n              -121.88232421875,\n              39.53793974517628\n            ]\n          ]\n        ]\n      }\n    }\n  ]\n}","volume":"104","issue":"3","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505b9409e4b08c986b31a815","contributors":{"authors":[{"text":"Haig, S. M. 0000-0002-6616-7589","orcid":"https://orcid.org/0000-0002-6616-7589","contributorId":55389,"corporation":false,"usgs":true,"family":"Haig","given":"S.","email":"","middleInitial":"M.","affiliations":[],"preferred":false,"id":402886,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Oring, L.W.","contributorId":46451,"corporation":false,"usgs":true,"family":"Oring","given":"L.W.","affiliations":[],"preferred":false,"id":402885,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Sanzenbacher, P.M.","contributorId":29553,"corporation":false,"usgs":true,"family":"Sanzenbacher","given":"P.M.","affiliations":[],"preferred":false,"id":402883,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Taft, O.W.","contributorId":45435,"corporation":false,"usgs":true,"family":"Taft","given":"O.W.","email":"","affiliations":[],"preferred":false,"id":402884,"contributorType":{"id":1,"text":"Authors"},"rank":4}]}}
,{"id":70024853,"text":"70024853 - 2002 - Empirical evidence for acceleration-dependent amplification factors","interactions":[],"lastModifiedDate":"2012-03-12T17:20:09","indexId":"70024853","displayToPublicDate":"2002-01-01T00:00:00","publicationYear":"2002","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1135,"text":"Bulletin of the Seismological Society of America","onlineIssn":"1943-3573","printIssn":"0037-1106","active":true,"publicationSubtype":{"id":10}},"title":"Empirical evidence for acceleration-dependent amplification factors","docAbstract":"Site-specific amplification factors, Fa and Fv, used in current U.S. building codes decrease with increasing base acceleration level as implied by the Loma Prieta earthquake at 0.1g and extrapolated using numerical models and laboratory results. The Northridge earthquake recordings of 17 January 1994 and subsequent geotechnical data permit empirical estimates of amplification at base acceleration levels up to 0.5g. Distance measures and normalization procedures used to infer amplification ratios from soil-rock pairs in predetermined azimuth-distance bins significantly influence the dependence of amplification estimates on base acceleration. Factors inferred using a hypocentral distance norm do not show a statistically significant dependence on base acceleration. Factors inferred using norms implied by the attenuation functions of Abrahamson and Silva show a statistically significant decrease with increasing base acceleration. The decrease is statistically more significant for stiff clay and sandy soil (site class D) sites than for stiffer sites underlain by gravely soils and soft rock (site class C). The decrease in amplification with increasing base acceleration is more pronounced for the short-period amplification factor, Fa, than for the midperiod factor, Fv.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Bulletin of the Seismological Society of America","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","doi":"10.1785/0120010170","issn":"00371106","usgsCitation":"Borcherdt, R., 2002, Empirical evidence for acceleration-dependent amplification factors: Bulletin of the Seismological Society of America, v. 92, no. 2, p. 761-782, https://doi.org/10.1785/0120010170.","startPage":"761","endPage":"782","numberOfPages":"22","costCenters":[],"links":[{"id":207811,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1785/0120010170"},{"id":233035,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"92","issue":"2","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505a0909e4b0c8380cd51d87","contributors":{"authors":[{"text":"Borcherdt, R. D. 0000-0002-8668-0849","orcid":"https://orcid.org/0000-0002-8668-0849","contributorId":32165,"corporation":false,"usgs":true,"family":"Borcherdt","given":"R. D.","affiliations":[],"preferred":false,"id":402873,"contributorType":{"id":1,"text":"Authors"},"rank":1}]}}
,{"id":70024849,"text":"70024849 - 2002 - A comparison of surface water natural organic matter in raw filtered water samples, XAD, and reverse osmosis isolates","interactions":[],"lastModifiedDate":"2018-11-28T08:02:19","indexId":"70024849","displayToPublicDate":"2002-01-01T00:00:00","publicationYear":"2002","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":3716,"text":"Water Research","onlineIssn":"1879-2448","printIssn":"0043-1354","active":true,"publicationSubtype":{"id":10}},"title":"A comparison of surface water natural organic matter in raw filtered water samples, XAD, and reverse osmosis isolates","docAbstract":"<div id=\"abstracts\" class=\"Abstracts\"><div id=\"aep-abstract-id12\" class=\"abstract author\"><div id=\"aep-abstract-sec-id13\"><p>This research compared raw filtered waters (RFWs), XAD resin isolates (XAD-8 and XAD-4), and reverse osmosis (RO) isolates of several surface water samples from McDonalds Branch, a small freshwater fen in the New Jersey Pine Barrens (USA). RO and XAD-8 are two of the most common techniques used to isolate natural organic matter (NOM) for studies of composition and reactivity; therefore, it is important to understand how the isolates differ from bulk (unisolated) samples and from one another. Although, any comparison between the isolation methods needs to consider that XAD-8 is specifically designed to isolate the humic fraction, whereas RO concentrates a broad range of organic matter and is not specific to humics. The comparison included for all samples: weight average molecular weight (<i>M</i><sub>w</sub>), number average molecular weight (<i>M</i><sub>n</sub>), polydispersity (<i>ρ</i>), absorbance at 280&nbsp;nm normalized to moles C (<i>ε</i><sub>280</sub>) (RFW and isolates); and for isolates only: elemental analysis, % carbon distribution by<span>&nbsp;</span><sup>13</sup>C NMR, and aqueous FTIR spectra. As expected, RO isolation gave higher yield of NOM than XAD-8, but also higher ash content, especially Si and S.<span>&nbsp;</span><i>M</i><sub>w</sub>decreased in the order: RO&gt;XAD-8&gt;RFW&gt;XAD-4. The<span>&nbsp;</span><i>M</i><sub>w</sub><span>&nbsp;</span>differences of isolates compared with RFW may be due to selective isolation (fractionation), or possibly in the case of RO to condensation or coagulation during isolation.<span>&nbsp;</span><sup>13</sup>C NMR results were roughly similar for the two methods, but the XAD-8 isolate was slightly higher in ‘aromatic’ C and the RO isolate was slightly higher in heteroaliphatic and carbonyl C. Infrared spectra indicated a higher carboxyl content for the XAD-8 isolates and a higher ester:carboxyl ratio for the RO isolates. The spectroscopic data thus are consistent with selective isolation of more hydrophobic compounds by XAD-8, and also with potential ester hydrolysis during that process, although further study is needed to determine whether ester hydrolysis does indeed occur. Researchers choosing between XAD and RO isolation methods for NOM need to consider first the purpose of the isolation; i.e., whether humic fractionation is desirable. Beyond that, they should consider the C yield and ash content, as well as the potential for alteration of NOM by ester hydrolysis (XAD) or condensation/coagulation (RO). Furthermore, the RO and XAD methods produce different fractions or isolates so that researchers should be careful when comparing the compositions and reactivities of NOM samples isolated by these two different techniques.</p></div></div></div>","language":"English","publisher":"Elsevier","doi":"10.1016/S0043-1354(01)00442-0","issn":"00431354","usgsCitation":"Maurice, P., Pullin, M., Cabaniss, S., Zhou, Q., Namjesnik-Dejanovic, K., and Aiken, G., 2002, A comparison of surface water natural organic matter in raw filtered water samples, XAD, and reverse osmosis isolates: Water Research, v. 36, no. 9, p. 2357-2371, https://doi.org/10.1016/S0043-1354(01)00442-0.","productDescription":"15 p.","startPage":"2357","endPage":"2371","costCenters":[{"id":589,"text":"Toxic Substances Hydrology Program","active":true,"usgs":true}],"links":[{"id":232964,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"},{"id":207767,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1016/S0043-1354(01)00442-0"}],"volume":"36","issue":"9","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"5059e376e4b0c8380cd4603d","contributors":{"authors":[{"text":"Maurice, P.A.","contributorId":48336,"corporation":false,"usgs":true,"family":"Maurice","given":"P.A.","email":"","affiliations":[],"preferred":false,"id":402836,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Pullin, M.J.","contributorId":93235,"corporation":false,"usgs":true,"family":"Pullin","given":"M.J.","email":"","affiliations":[],"preferred":false,"id":402839,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Cabaniss, S.E.","contributorId":76487,"corporation":false,"usgs":true,"family":"Cabaniss","given":"S.E.","email":"","affiliations":[],"preferred":false,"id":402837,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Zhou, Q. 0000-0002-1282-8177","orcid":"https://orcid.org/0000-0002-1282-8177","contributorId":93164,"corporation":false,"usgs":true,"family":"Zhou","given":"Q.","affiliations":[],"preferred":false,"id":402838,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Namjesnik-Dejanovic, K.","contributorId":30389,"corporation":false,"usgs":true,"family":"Namjesnik-Dejanovic","given":"K.","email":"","affiliations":[],"preferred":false,"id":402835,"contributorType":{"id":1,"text":"Authors"},"rank":5},{"text":"Aiken, G. R. 0000-0001-8454-0984","orcid":"https://orcid.org/0000-0001-8454-0984","contributorId":14452,"corporation":false,"usgs":true,"family":"Aiken","given":"G. R.","affiliations":[],"preferred":false,"id":402834,"contributorType":{"id":1,"text":"Authors"},"rank":6}]}}
,{"id":70024846,"text":"70024846 - 2002 - A Holocene paleosecular variation from 14C-dated volcanic rocks in western North America","interactions":[],"lastModifiedDate":"2022-07-22T16:34:56.962468","indexId":"70024846","displayToPublicDate":"2002-01-01T00:00:00","publicationYear":"2002","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":2314,"text":"Journal of Geophysical Research B: Solid Earth","active":true,"publicationSubtype":{"id":10}},"displayTitle":"A Holocene paleosecular variation from <sup>14</sup>C-dated volcanic rocks in western North America","title":"A Holocene paleosecular variation from 14C-dated volcanic rocks in western North America","docAbstract":"<p><span>A paleosecular variation (PSV) curve for western North America is presented on the basis of 94 virtual geomagnetic poles (VGPs) from dated volcanic rocks sampled at 446 sites. Approximately 60% of the paleomagnetic database has been previously published. A curve defined by “spherical smoothed splines” is fitted to the VGPs, ranked by the quality of the age determinations, where the data density is highest between 3690 and −30 years before present (B.P.) (A.D. 1950), between 7800 and 7050 years B.P., and between 14,060 and 12,700 years B.P. The younger segments of the curve derived from volcanic rocks are similar but less complex than other high-resolution PSV curves derived from lacustrine sediments, particularly the record at Fish Lake, Oregon. The PSV record from lava flows (PSVL), however, is perhaps more reliable in its general shape and chronology because of the higher fidelity of volcanic rocks as magnetic field recorders and because of the greater density of&nbsp;</span><sup>14</sup><span>C dates. The new PSVL record provides a partial Holocene master curve for western North America and will be of particular value in dating geological and archeological materials using paleomagnetic directions.</span></p>","language":"English","publisher":"American Geophysical Union","doi":"10.1029/2001JB000524","usgsCitation":"Hagstrum, J.T., and Champion, D.E., 2002, A Holocene paleosecular variation from 14C-dated volcanic rocks in western North America: Journal of Geophysical Research B: Solid Earth, v. 107, no. B1, p. EPM 8-1-EPM 8-14, https://doi.org/10.1029/2001JB000524.","productDescription":"14 p.","startPage":"EPM 8-1","endPage":"EPM 8-14","costCenters":[{"id":312,"text":"Geology, Minerals, Energy, and Geophysics Science Center","active":true,"usgs":true},{"id":617,"text":"Volcano Science Center","active":true,"usgs":true}],"links":[{"id":478667,"rank":1,"type":{"id":40,"text":"Open Access Publisher Index Page"},"url":"https://doi.org/10.1029/2001jb000524","text":"Publisher Index Page"},{"id":232897,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"country":"United States","state":"Arizona, California, Colorado, Idaho, New Mexico, Nevada, Oregon, Utah, 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 \"}}]}","volume":"107","issue":"B1","noUsgsAuthors":false,"publicationDate":"2002-01-31","publicationStatus":"PW","scienceBaseUri":"5059e2e3e4b0c8380cd45cec","contributors":{"authors":[{"text":"Hagstrum, Jonathan T. 0000-0002-0689-280X jhag@usgs.gov","orcid":"https://orcid.org/0000-0002-0689-280X","contributorId":3474,"corporation":false,"usgs":true,"family":"Hagstrum","given":"Jonathan","email":"jhag@usgs.gov","middleInitial":"T.","affiliations":[{"id":312,"text":"Geology, Minerals, Energy, and Geophysics Science Center","active":true,"usgs":true}],"preferred":true,"id":402830,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Champion, Duane E. 0000-0001-7854-9034 dchamp@usgs.gov","orcid":"https://orcid.org/0000-0001-7854-9034","contributorId":2912,"corporation":false,"usgs":true,"family":"Champion","given":"Duane","email":"dchamp@usgs.gov","middleInitial":"E.","affiliations":[{"id":617,"text":"Volcano Science Center","active":true,"usgs":true}],"preferred":true,"id":402829,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}}
,{"id":70024845,"text":"70024845 - 2002 - Influence of fluvial processes on the quaternary geologic framework of the continental shelf, North Carolina, USA","interactions":[],"lastModifiedDate":"2012-03-12T17:20:10","indexId":"70024845","displayToPublicDate":"2002-01-01T00:00:00","publicationYear":"2002","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":2667,"text":"Marine Geology","active":true,"publicationSubtype":{"id":10}},"title":"Influence of fluvial processes on the quaternary geologic framework of the continental shelf, North Carolina, USA","docAbstract":"Digital, single-channel, high-resolution seismic reflection profiles were acquired from the insular continental shelf of North Carolina, USA along a data grid extending from Oregon Inlet northward 48 km to Duck, North Carolina and from the nearshore zone seaward approximately 28 km (total surveyed area= 1334 km2). These data were processed and interpreted to delineate principal reflecting horizons and develop a three-dimensional seismic stratigraphic framework for the continental shelf that was compared to stratigraphic data from the shoreward back-barrier (estuarine) and barrier island system. Six principal reflecting horizons (designated R0 through R5) were present within the upper 60 m of the shelf stratigraphic succession. Three-dimensional mapping of reflector R1 demonstrated its origin from fluvial incision of the continental shelf during an episode (or episodes) of lowered sea-level. Fluvial processes during development of reflector R1 were responsible for extensive reworking and re-deposition of sediment throughout most of the northern half of the study area. Five seismic stratigraphic units (designated S1 through S5) were tentatively correlated with depositional sequences previously identified from the North Carolina back-barrier (estuarine) and barrier island system. These five stratigraphic units span the Quaternary Period (S1 = early Holocene; S2 = 51-78 ka; S3 = 330-530 ka; S4 = 1.1-1.8 Ma; S5 = earliest Pleistocene). Unit S1 is composed of fine-grained fluvial/estuarine sediment that back-filled incised streams during early Holocene sea-level rise. The four other stratigraphic units (S2-S5) display tabular depositional geometries, low total relief, and thicken toward the east-southeast as their basal reflectors dip gently between 0.41 m km-1 (0.02??) and 0.54 m km-1 (0.03??). Knowledge of the three-dimensional subsurface stratigraphic architecture of the continental shelf enhances understanding of the development of shelf depositional successions and provides a framework for development of better Quaternary sea-level data, especially offshore North Carolina where such data are sparse. ?? 2002 Elsevier Science B.V. All rights reserved.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Marine Geology","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","doi":"10.1016/S0025-3227(01)00253-5","issn":"00253227","usgsCitation":"Boss, S., Hoffman, C., and Cooper, B., 2002, Influence of fluvial processes on the quaternary geologic framework of the continental shelf, North Carolina, USA: Marine Geology, v. 183, no. 1-4, p. 45-65, https://doi.org/10.1016/S0025-3227(01)00253-5.","startPage":"45","endPage":"65","numberOfPages":"21","costCenters":[],"links":[{"id":207723,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1016/S0025-3227(01)00253-5"},{"id":232896,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"183","issue":"1-4","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505a3b39e4b0c8380cd6232c","contributors":{"authors":[{"text":"Boss, S.K.","contributorId":36713,"corporation":false,"usgs":true,"family":"Boss","given":"S.K.","email":"","affiliations":[],"preferred":false,"id":402826,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Hoffman, C.W.","contributorId":46103,"corporation":false,"usgs":true,"family":"Hoffman","given":"C.W.","email":"","affiliations":[],"preferred":false,"id":402827,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Cooper, B.","contributorId":94465,"corporation":false,"usgs":true,"family":"Cooper","given":"B.","affiliations":[],"preferred":false,"id":402828,"contributorType":{"id":1,"text":"Authors"},"rank":3}]}}
,{"id":70024831,"text":"70024831 - 2002 - Rare earth element variations resulting from inversion of pigeonite and subsolidus reequilibration in lunar ferroan anorthosites","interactions":[],"lastModifiedDate":"2019-06-05T09:33:19","indexId":"70024831","displayToPublicDate":"2002-01-01T00:00:00","publicationYear":"2002","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1759,"text":"Geochimica et Cosmochimica Acta","active":true,"publicationSubtype":{"id":10}},"title":"Rare earth element variations resulting from inversion of pigeonite and subsolidus reequilibration in lunar ferroan anorthosites","docAbstract":"<p id=\"simple-para0060\"><span>We present results of a&nbsp;secondary ion mass spectrometry&nbsp;study of the&nbsp;rare earth elements&nbsp;(REEs) in the&nbsp;minerals&nbsp;of two samples of lunar ferroan&nbsp;anorthosite, and the results are applicable to studies of&nbsp;REEs&nbsp;in all igneous rocks, no matter what their planet of origin. Our&nbsp;pyroxene&nbsp;analyses are used to determine solid-solid REE distribution coefficients (D = C</span><sub>REE</sub><span>&nbsp;</span>in low-Ca pyroxene/C<sub>REE</sub><span>&nbsp;in augite) in orthopyroxene-augite pairs derived by inversion of&nbsp;pigeonite. Our data and predictions from crystal-chemical considerations indicate that as primary pigeonite inverts to&nbsp;orthopyroxene&nbsp;plus&nbsp;augite&nbsp;and subsolidus reequilibration proceeds, the solid-solid Ds for orthopyroxene-augite pairs progressively decrease for all REEs; the decrease is greatest for the LREEs. The REE pattern of solid-solid Ds for inversion-derived pyroxene pairs is close to a straight line for Sm-Lu and turns upward for REEs lighter than Sm; the shape of this pattern is predicted by the shapes of the REE patterns for the individual minerals.</span></p><p id=\"simple-para0065\"><span>Equilibrium liquids calculated for one sample from the compositions of primary phases, using measured or experimentally determined solid-liquid Ds, have chondrite-normalized REE patterns that are very slightly enriched in LREEs. The&nbsp;plagioclase&nbsp;equilibrium liquid is overall less rich in REEs than pyroxene equilibrium liquids, and the discrepancy probably arises because the calculated plagioclase equilibrium liquid represents a liquid earlier in the&nbsp;fractionationsequence than the pyroxene equilibrium liquids. “Equilibrium” liquids calculated from the compositions of inversion-derived pyroxenes or orthopyroxene derived by reaction of&nbsp;olivine&nbsp;are LREE depleted (in some cases substantially) in comparison with equilibrium liquids calculated from the compositions of primary phases. These discrepancies arise because the inversion-derived and reaction-derived pyroxenes did not crystallize directly from liquid, and the use of solid-liquid Ds is inappropriate. The LREE&nbsp;depletion&nbsp;of the calculated liquids is a relic of formation of these phases from primary LREE-depleted minerals. Thus, if one attempts to calculate the compositions of equilibrium liquids from pyroxene compositions, it is important to establish that the pyroxenes are primary. In addition, our data suggest that&nbsp;</span>experimental studies<span>&nbsp;</span>have underestimated solid-liquid Ds for REEs in pigeonite and that REE contents of liquids calculated using these Ds are overestimates.</p><p id=\"simple-para0070\"><span>Our results have implications for Sm-Nd age studies. Our work shows that if pigeonite inversion and/or subsolidus reequilibration between augite and orthopyroxene occurred significantly after&nbsp;crystallization, and if pyroxene separates isolated for Sm-Nd studies do not have the bulk composition of the primary pyroxenes, then the Sm-Nd isochron age and ε</span><sub>Nd</sub><span>&nbsp;</span>will be in error.</p>","language":"English","publisher":"Elsevier","doi":"10.1016/S0016-7037(01)00772-4","issn":"00167037","usgsCitation":"James, O., Floss, C., and McGee, J.J., 2002, Rare earth element variations resulting from inversion of pigeonite and subsolidus reequilibration in lunar ferroan anorthosites: Geochimica et Cosmochimica Acta, v. 66, no. 7, p. 1269-1284, https://doi.org/10.1016/S0016-7037(01)00772-4.","productDescription":"16 p.","startPage":"1269","endPage":"1284","numberOfPages":"16","costCenters":[],"links":[{"id":233211,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"66","issue":"7","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505a951ee4b0c8380cd81804","contributors":{"authors":[{"text":"James, O.B.","contributorId":100526,"corporation":false,"usgs":true,"family":"James","given":"O.B.","email":"","affiliations":[],"preferred":false,"id":402777,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Floss, C.","contributorId":48341,"corporation":false,"usgs":true,"family":"Floss","given":"C.","email":"","affiliations":[],"preferred":false,"id":402775,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"McGee, J. J.","contributorId":92271,"corporation":false,"usgs":true,"family":"McGee","given":"J.","email":"","middleInitial":"J.","affiliations":[],"preferred":false,"id":402776,"contributorType":{"id":1,"text":"Authors"},"rank":3}]}}
,{"id":70024830,"text":"70024830 - 2002 - Variation in survivorship of a migratory songbird throughout its annual cycle","interactions":[],"lastModifiedDate":"2012-03-12T17:20:08","indexId":"70024830","displayToPublicDate":"2002-01-01T00:00:00","publicationYear":"2002","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":2158,"text":"Journal of Animal Ecology","active":true,"publicationSubtype":{"id":10}},"title":"Variation in survivorship of a migratory songbird throughout its annual cycle","docAbstract":"1. Demographic data from both breeding and non-breeding periods are needed to manage populations of migratory birds, many of which are declining in abundance and are of conservation concern. Although habitat associations, and to a lesser extent, reproductive biology, are known for many migratory species, few studies have measured survival rates of these birds at different parts of their annual cycle. 2. Cormack-Jolly-Seber models and Akaike's information criterion model selection were used to investigate seasonal variation in survival of a Nearctic - Neotropical migrant songbird, the black-throated blue warbler, Dendroica caerulescens. Seasonal and annual survival were estimated from resightings of colour-ringed individuals on breeding grounds in New Hampshire, USA from 1986 to 2000 and on winter quarters in Jamaica, West Indies from 1986 to 1999. Warblers were studied each year during the May-August breeding period in New Hampshire and during the October-March overwinter period in Jamaica. 3. In New Hampshire, males had higher annual survival (0.51 ?? 0.03) and recapture probabilities (0.93 ?? 0.03) than did females (survival: 0.40 ?? 0.04; recapture: 0.87 ?? 0.06). In Jamaica, annual survival (0.43 ?? 0.03) and recapture (0.95 ?? 0.04) probabilities did not differ between sexes. Annual survival and recapture probabilities of young birds (i.e. yearlings in New Hampshire and hatch-year birds in Jamaica) did not differ from adults, indicating that from the time hatch-year individuals acquire territories on winter quarters in mid-October, they survive as well as adults within the same habitat. 4. Monthly survival probabilities during the summer (May-August) and winter (October-March) stationary periods were high: 1.0 for males in New Hampshire, and 0.99 ?? 0.01 for males in Jamaica and for females in both locations. 5. These annual and seasonal survival estimates were used to calculate warbler survival for the migratory periods. Monthly survival probability during migration ranged from 0.77 to 0.81 ?? 0.02. Thus, apparent mortality rates were at least 15 times higher during migration compared to that in the stationary periods, and more than 85% of apparent annual mortality of D. caerulescens occurred during migration. 6. Additional data from multiple species, especially measures of habitat-specific demography and dispersal, will improve our understanding of the relative impacts of the breeding, migratory, and winter periods on population dynamics of migratory birds and thus enhance future conservation efforts.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Journal of Animal Ecology","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","doi":"10.1046/j.1365-2656.2002.00599.x","issn":"00218790","usgsCitation":"Scott, S.T., and Holmes, R.T., 2002, Variation in survivorship of a migratory songbird throughout its annual cycle: Journal of Animal Ecology, v. 71, no. 2, p. 296-308, https://doi.org/10.1046/j.1365-2656.2002.00599.x.","startPage":"296","endPage":"308","numberOfPages":"13","costCenters":[],"links":[{"id":207896,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1046/j.1365-2656.2002.00599.x"},{"id":233178,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"71","issue":"2","noUsgsAuthors":false,"publicationDate":"2002-04-19","publicationStatus":"PW","scienceBaseUri":"505bc166e4b08c986b32a55d","contributors":{"authors":[{"text":"Scott, Sillett T.","contributorId":30003,"corporation":false,"usgs":true,"family":"Scott","given":"Sillett","email":"","middleInitial":"T.","affiliations":[],"preferred":false,"id":402773,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Holmes, Richard T.","contributorId":45269,"corporation":false,"usgs":true,"family":"Holmes","given":"Richard","email":"","middleInitial":"T.","affiliations":[],"preferred":false,"id":402774,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}}
,{"id":70024818,"text":"70024818 - 2002 - Ancient and modern subduction zone contributions to the mantle sources of lavas from the Lassen region of California inferred from Lu-Hf isotopic systematics","interactions":[],"lastModifiedDate":"2022-08-03T15:36:48.589429","indexId":"70024818","displayToPublicDate":"2002-01-01T00:00:00","publicationYear":"2002","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":2420,"text":"Journal of Petrology","active":true,"publicationSubtype":{"id":10}},"title":"Ancient and modern subduction zone contributions to the mantle sources of lavas from the Lassen region of California inferred from Lu-Hf isotopic systematics","docAbstract":"<p><span>Hafnium isotopic compositions have been determined on a suite of calc-alkaline and high-alumina-olivine tholeiitic lavas from the Lassen region of California and are used, in conjunction with previously published mineralogical, geochemical, and isotopic data, to constrain their petrogenesis. Positive correlation between ε</span><sub><i>Hf</i></sub><span>&nbsp;values and geochemical indices of the modern subduction component indicates that the isotopic compositions of the calc-alkaline lavas record addition of radiogenic Hf from the subducted slab. However, the addition of the modern subduction component increases the ε</span><sub><i>Hf</i></sub><span>&nbsp;values of most calc-alkaline lavas by &lt;0·5 units over estimates of non-subduction enriched peridotites of the mantle wedge. The Lu–Hf isotopic systematics of the Lassen lavas suggest that the calc-alkaline magmas have equilibrated with garnet at some point in their history, whereas the tholeiitic magmas have not. These observations require the two lava types to be derived from different sources. The isotopic variability of the Lassen lavas cannot be produced by mixing mantle sources inferred to be present in the eastern–central Pacific and western USA with a modern subduction component. Instead, the isotopic variability is consistent with mixing of a depleted mantle source, a more fertile mantle source enriched by an ancient subduction component, and a modern subduction component.</span></p>","language":"English","publisher":"Oxford Academic","doi":"10.1093/petrology/43.4.705","usgsCitation":"Borg, L.E., Blichert-Toft, J., and Clynne, M.A., 2002, Ancient and modern subduction zone contributions to the mantle sources of lavas from the Lassen region of California inferred from Lu-Hf isotopic systematics: Journal of Petrology, v. 43, no. 4, p. 705-723, https://doi.org/10.1093/petrology/43.4.705.","productDescription":"19 p.","startPage":"705","endPage":"723","numberOfPages":"19","costCenters":[{"id":617,"text":"Volcano Science Center","active":true,"usgs":true}],"links":[{"id":489164,"rank":1,"type":{"id":40,"text":"Open Access Publisher Index Page"},"url":"https://doi.org/10.1093/petrology/43.4.705","text":"Publisher Index Page"},{"id":232962,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"country":"United States","state":"California","otherGeospatial":"Lassen region","geographicExtents":"{\n  \"type\": \"FeatureCollection\",\n  \"features\": [\n    {\n      \"type\": \"Feature\",\n      \"properties\": {},\n      \"geometry\": {\n        \"type\": \"Polygon\",\n        \"coordinates\": [\n          [\n            [\n              -122.0086669921875,\n              39.791654835253425\n            ],\n            [\n              -120.574951171875,\n              39.791654835253425\n            ],\n            [\n              -120.574951171875,\n              41.000629848685385\n            ],\n            [\n              -122.0086669921875,\n              41.000629848685385\n            ],\n            [\n              -122.0086669921875,\n              39.791654835253425\n            ]\n          ]\n        ]\n      }\n    }\n  ]\n}","volume":"43","issue":"4","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"5059ebf4e4b0c8380cd48fbd","contributors":{"authors":[{"text":"Borg, L. E.","contributorId":33863,"corporation":false,"usgs":false,"family":"Borg","given":"L.","email":"","middleInitial":"E.","affiliations":[],"preferred":false,"id":402726,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Blichert-Toft, Janne","contributorId":248203,"corporation":false,"usgs":false,"family":"Blichert-Toft","given":"Janne","affiliations":[{"id":49822,"text":"Ecole Normale Supérieure de Lyon","active":true,"usgs":false}],"preferred":false,"id":402727,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Clynne, Michael A. 0000-0002-4220-2968 mclynne@usgs.gov","orcid":"https://orcid.org/0000-0002-4220-2968","contributorId":2032,"corporation":false,"usgs":true,"family":"Clynne","given":"Michael","email":"mclynne@usgs.gov","middleInitial":"A.","affiliations":[{"id":617,"text":"Volcano Science Center","active":true,"usgs":true}],"preferred":true,"id":402728,"contributorType":{"id":1,"text":"Authors"},"rank":3}]}}
,{"id":70024817,"text":"70024817 - 2002 - The National Vegetation Classification Standard applied to the remote sensing classification of two semiarid environments","interactions":[],"lastModifiedDate":"2012-03-12T17:20:10","indexId":"70024817","displayToPublicDate":"2002-01-01T00:00:00","publicationYear":"2002","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1547,"text":"Environmental Management","active":true,"publicationSubtype":{"id":10}},"title":"The National Vegetation Classification Standard applied to the remote sensing classification of two semiarid environments","docAbstract":"The National Vegetation Classification Standard (NVCS) was implemented at two US National Park Service (NPS) sites in Texas, the Padre Island National Seashore (PINS) and the Lake Meredith National Recreation Area (LM-NRA), to provide information for NPS oil and gas management plans. Because NVCS landcover classifications did not exist for these two areas prior to this study, we created landcover classes, through intensive ground and aerial reconnaissance, that characterized the general landscape features and at the same time complied with NVCS guidelines. The created landcover classes were useful for the resource management and were conducive to classification with optical remote sensing systems, such as the Landsat Thematic Mapper (TM). In the LMNRA, topographic elevation data were added to the TM data to reduce confusion between cliff, high plains, and forest classes. Classification accuracies (kappa statistics) of 89.9% (0.89) and 88.2% (0.87) in PINS and LMNRA, respectively, verified that the two NPS landholdings were adequately mapped with TM data. Improved sensor systems with higher spectral and spatial resolutions will ultimately refine the broad classes defined in this classification; however, the landcover classifications created in this study have already provided valuable information for the management of both NPS lands. Habitat information provided by the classifications has aided in the placement of inventory and monitoring plots, has assisted oil and gas operators by providing information on sensitive habitats, and has allowed park managers to better use resources when fighting wildland fires and in protecting visitors and the infrastructure of NPS lands.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Environmental Management","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","doi":"10.1007/s00267-001-0048-5","issn":"0364152X","usgsCitation":"Ramsey, E., Nelson, G., Echols, D., and Sapkota, S., 2002, The National Vegetation Classification Standard applied to the remote sensing classification of two semiarid environments: Environmental Management, v. 29, no. 5, p. 703-715, https://doi.org/10.1007/s00267-001-0048-5.","startPage":"703","endPage":"715","numberOfPages":"13","costCenters":[],"links":[{"id":207745,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1007/s00267-001-0048-5"},{"id":232927,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"29","issue":"5","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505ba83fe4b08c986b321ad9","contributors":{"authors":[{"text":"Ramsey, Elijah W. III 0000-0002-4518-5796","orcid":"https://orcid.org/0000-0002-4518-5796","contributorId":72769,"corporation":false,"usgs":true,"family":"Ramsey","given":"Elijah W.","suffix":"III","affiliations":[{"id":17705,"text":"Wetland and Aquatic Research Center","active":true,"usgs":true}],"preferred":false,"id":402724,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Nelson, G.A.","contributorId":17687,"corporation":false,"usgs":true,"family":"Nelson","given":"G.A.","email":"","affiliations":[],"preferred":false,"id":402722,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Echols, D.","contributorId":88127,"corporation":false,"usgs":true,"family":"Echols","given":"D.","email":"","affiliations":[],"preferred":false,"id":402725,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Sapkota, S.K.","contributorId":24434,"corporation":false,"usgs":true,"family":"Sapkota","given":"S.K.","email":"","affiliations":[],"preferred":false,"id":402723,"contributorType":{"id":1,"text":"Authors"},"rank":4}]}}
,{"id":70024814,"text":"70024814 - 2002 - 234U/238U evidence for local recharge and patterns of groundwater flow in the vicinity of Yucca Mountain, Nevada, USA","interactions":[],"lastModifiedDate":"2012-03-12T17:20:10","indexId":"70024814","displayToPublicDate":"2002-01-01T00:00:00","publicationYear":"2002","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":835,"text":"Applied Geochemistry","active":true,"publicationSubtype":{"id":10}},"title":"234U/238U evidence for local recharge and patterns of groundwater flow in the vicinity of Yucca Mountain, Nevada, USA","docAbstract":"Uranium concentrations and 234U/238U ratios in saturated-zone and perched ground water were used to investigate hydrologic flow and downgradient dilution and dispersion in the vicinity of Yucca Mountain, a potential high-level radioactive waste disposal site. The U data were obtained by thermal ionization mass spectrometry on more than 280 samples from the Death Valley regional flow system. Large variations in both U concentrations (commonly 0.6-10 ??g 1-1) and 234U/238U activity ratios (commonly 1.5-6) are present on both local and regional scales; however, ground water with 234U/238U activity ratios from 7 up to 8.06 is restricted largely to samples from Yucca Mountain. Data from ground water in the Tertiary volcanic and Quaternary alluvial aquifers at and adjacent to Yucca Mountain plot in 3 distinct fields of reciprocal U concentration versus 234U/238U activity ratio correlated to different geographic areas. Ground water to the west of Yucca Mountain has large U concentrations and moderate 234U/238U whereas ground water to the east in the Fortymile flow system has similar 234U/238U, but distinctly smaller U concentrations. Ground water beneath the central part of Yucca Mountain has intermediate U concentrations but distinctive 234U/238U activity ratios of about 7-8. Perched water from the lower part of the unsaturated zone at Yucca Mountain has similarly large values of 234U/238U. These U data imply that the Tertiary volcanic aquifer beneath the central part of Yucca Mountain is isolated from north-south regional flow. The similarity of 234U/238U in both saturated- and unsaturated-zone ground water at Yucca Mountain further indicates that saturated-zone ground water beneath Yucca Mountain is dominated by local recharge rather than regional flow. The distinctive 234U/238U signatures also provide a natural tracer of downgradient flow. Elevated 234U/238U in ground water from two water-supply wells east of Yucca Mountain are interpreted as the result of induced flow from 40 a of ground-water withdrawal. Elevated 234U/238U in a borehole south of Yucca Mountain is interpreted as evidence that natural downgradient flow is more likely to follow southerly paths in the structurally anisotropic Tertiary volcanic aquifer where it becomes diluted by regional flow in the Fortymile system.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Applied Geochemistry","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","doi":"10.1016/S0883-2927(02)00037-9","issn":"08832927","usgsCitation":"Paces, J., Ludwig, K., Peterman, Z.E., and Neymark, L., 2002, 234U/238U evidence for local recharge and patterns of groundwater flow in the vicinity of Yucca Mountain, Nevada, USA: Applied Geochemistry, v. 17, no. 6, p. 751-779, https://doi.org/10.1016/S0883-2927(02)00037-9.","startPage":"751","endPage":"779","numberOfPages":"29","costCenters":[],"links":[{"id":207721,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1016/S0883-2927(02)00037-9"},{"id":232894,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"17","issue":"6","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"5059e254e4b0c8380cd45ac6","contributors":{"authors":[{"text":"Paces, J.B. 0000-0002-9809-8493","orcid":"https://orcid.org/0000-0002-9809-8493","contributorId":27482,"corporation":false,"usgs":true,"family":"Paces","given":"J.B.","affiliations":[],"preferred":false,"id":402710,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Ludwig, K.R.","contributorId":97112,"corporation":false,"usgs":true,"family":"Ludwig","given":"K.R.","email":"","affiliations":[{"id":218,"text":"Denver Federal Center","active":false,"usgs":true}],"preferred":false,"id":402713,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Peterman, Z. E.","contributorId":63781,"corporation":false,"usgs":true,"family":"Peterman","given":"Z.","email":"","middleInitial":"E.","affiliations":[],"preferred":false,"id":402712,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Neymark, L.A. 0000-0003-4190-0278","orcid":"https://orcid.org/0000-0003-4190-0278","contributorId":56673,"corporation":false,"usgs":true,"family":"Neymark","given":"L.A.","affiliations":[],"preferred":false,"id":402711,"contributorType":{"id":1,"text":"Authors"},"rank":4}]}}
,{"id":70024813,"text":"70024813 - 2002 - Pockmarks off Big Sur, California","interactions":[],"lastModifiedDate":"2012-03-12T17:20:10","indexId":"70024813","displayToPublicDate":"2002-01-01T00:00:00","publicationYear":"2002","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":2667,"text":"Marine Geology","active":true,"publicationSubtype":{"id":10}},"title":"Pockmarks off Big Sur, California","docAbstract":"A pockmark field was discovered during EM-300 multi-beam bathymetric surveys on the lower continental slope off the Big Sur coast of California. The field contains ??? 1500 pockmarks which are between 130 and 260 m in diameter, and typically are 8-12 m deep located within a 560 km2 area. To investigate the origin of these features, piston cores were collected from both the interior and the flanks of the pockmarks, and remotely operated vehicle observation (ROV) video and sampling transects were conducted which passed through 19 of the pockmarks. The water column within and above the pockmarks was sampled for methane concentration. Piston cores and ROV collected push cores show that the pockmark field is composed of monotonous fine silts and clays and the cores within the pockmarks are indistinguishable from those outside the pockmarks. No evidence for either sediment winnowing or diagenetic alteration suggestive of fluid venting was obtained. 14C measurements of the organic carbon in the sediments indicate continuous sedimentation throughout the time resolution of the radiocarbon technique ( ??? 45000 yr BP), with a sedimentation rate of ??? 10 cm per 1000 yr both within and between the pockmarks. Concentrations of methane, dissolved inorganic carbon, sulfate, chloride, and ammonium in pore water extracted from within the cores are generally similar in composition to seawater and show little change with depth, suggesting low biogeochemical activity. These pore water chemical gradients indicate that neither significant accumulations of gas are likely to exist in the shallow subsurface ( ??? 100 m) nor is active fluid advection occurring within the sampled sediments. Taken together the data indicate that these pockmarks are more than 45000 yr old, are presently inactive, and contain no indications of earlier fluid or gas venting events. ?? 2002 Elsevier Science B.V. All rights reserved.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Marine Geology","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","doi":"10.1016/S0025-3227(01)00247-X","issn":"00253227","usgsCitation":"Paull, C., Ussler, W., Maher, N., Greene, H., Rehder, G., Lorenson, T., and Lee, H., 2002, Pockmarks off Big Sur, California: Marine Geology, v. 181, no. 4, p. 323-335, https://doi.org/10.1016/S0025-3227(01)00247-X.","startPage":"323","endPage":"335","numberOfPages":"13","costCenters":[],"links":[{"id":207720,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1016/S0025-3227(01)00247-X"},{"id":232893,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"181","issue":"4","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505a7ca8e4b0c8380cd79ae5","contributors":{"authors":[{"text":"Paull, C.","contributorId":99739,"corporation":false,"usgs":true,"family":"Paull","given":"C.","affiliations":[],"preferred":false,"id":402707,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Ussler, W. III","contributorId":101048,"corporation":false,"usgs":true,"family":"Ussler","given":"W.","suffix":"III","affiliations":[],"preferred":false,"id":402708,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Maher, N.","contributorId":35099,"corporation":false,"usgs":true,"family":"Maher","given":"N.","email":"","affiliations":[],"preferred":false,"id":402703,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Greene, H. Gary","contributorId":38958,"corporation":false,"usgs":true,"family":"Greene","given":"H. Gary","affiliations":[{"id":520,"text":"Pacific Coastal and Marine Science Center","active":true,"usgs":true}],"preferred":false,"id":402704,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Rehder, G.","contributorId":103045,"corporation":false,"usgs":true,"family":"Rehder","given":"G.","email":"","affiliations":[],"preferred":false,"id":402709,"contributorType":{"id":1,"text":"Authors"},"rank":5},{"text":"Lorenson, T.","contributorId":88915,"corporation":false,"usgs":true,"family":"Lorenson","given":"T.","email":"","affiliations":[],"preferred":false,"id":402706,"contributorType":{"id":1,"text":"Authors"},"rank":6},{"text":"Lee, H.","contributorId":40739,"corporation":false,"usgs":true,"family":"Lee","given":"H.","affiliations":[],"preferred":false,"id":402705,"contributorType":{"id":1,"text":"Authors"},"rank":7}]}}
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