Synthetic strontianite-aragonite solid-solution minerals were dissolved in CO2-saturated non-stoichiometric solutions of Sr(HCO3)2 and Ca(HCO3)2 at 25°C. The results show that none of the dissolution reactions reach thermodynamic equilibrium. Congruent dissolution in Ca(HCO3)2 solutions either attains or closely approaches stoichiometric saturation with respect to the dissolving solid. In Sr(HCO3)2 solutions the reactions usually become incongruent, precipitating a Sr-rich phase before reaching stoichiometric saturation. Dissolution of mechanical mixtures of solids approaches stoichiometric saturation with respect to the least stable solid in the mixture. Surface uptake from subsaturated bulk solutions was observed in the initial minutes of dissolution. This surficial phase is 0–10 atomic layers thick in Sr(HCO3)2 solutions and 0–4 layers thick in Ca(HCO3)2 solutions, and subsequently dissolves and/or recrystallizes, usually within 6 min of reaction. The initial transient surface precipitation (recrystallization) process is followed by congruent dissolution of the original solid which proceeds to stoichiometric saturation, or until the precipitation of a more stable Sr-rich solid. The compositions of secondary precipitates do not correspond to thermodynamic equilibrium or stoichiometric saturation states. X-ray photoelectron spectroscopy (XPS) measurements indicate the formation of solid solutions on surfaces of aragonite and strontianite single crystals immersed in Sr(HCO3)2 and Ca(HCO3)2 solutions, respectively. In Sr(HCO3)2 solutions, the XPS signal from the outer ~ 60 Å on aragonite indicates a composition of 16 mol% SrCO3 after only 2 min of contact, and 14–18 mol% SrCO3 after 3 weeks of contact. The strontianite surface averages approximately 22 mol% CaCO3 after 2 min of contact with Ca(HCO3)2 solution, and is 34–39 mol% CaCO3 after 3 weeks of contact. XPS analysis suggests the surface composition is zoned with somewhat greater enrichment in the outer ~25 Å (as much as 26 mol% SrCO3 on aragonite and 44 mol% CaCO3 on strontianite). The results indicate rapid formation of a solid-solution surface phase from subsaturated aqueous solutions. The surface phase continually adjusts in composition in response to changes in composition of the bulk fluid as net dissolution proceeds. Dissolution rates of the endmembers are greatly reduced in nonstoichiometric solutions relative to dissolution rates observed in stoichiometric solutions. All solids dissolve more slowly in solutions spiked with the least soluble component ((Sr(HCO3)2)) than in solutions spiked with the more soluble component (Ca(HCO3)2), an effect that becomes increasingly significant as stoichiometric saturation is approached. It is proposed that the formation of a non-stoichiometric surface reactive zone significantly decreases dissolution rates.
","language":"English","publisher":"Elsevier","doi":"10.1016/0016-7037(92)90289-U","issn":"00167037","usgsCitation":"Plummer, N., Busenberg, E., Glynn, P.D., and Blum, A., 1992, Dissolution of aragonite-strontianite solid solutions in nonstoichiometric Sr (HCO3)2-Ca (HCO3)2-CO2-H2O solutions: Geochimica et Cosmochimica Acta, v. 56, no. 8, p. 3045-3072, https://doi.org/10.1016/0016-7037(92)90289-U.","productDescription":"28 p.","startPage":"3045","endPage":"3072","numberOfPages":"28","costCenters":[{"id":589,"text":"Toxic Substances Hydrology Program","active":true,"usgs":true}],"links":[{"id":224683,"rank":1,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"56","issue":"8","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505a022de4b0c8380cd4ff16","contributors":{"authors":[{"text":"Plummer, Niel 0000-0002-4020-1013 nplummer@usgs.gov","orcid":"https://orcid.org/0000-0002-4020-1013","contributorId":190100,"corporation":false,"usgs":true,"family":"Plummer","given":"Niel","email":"nplummer@usgs.gov","affiliations":[{"id":436,"text":"National Research Program - Eastern Branch","active":true,"usgs":true}],"preferred":true,"id":375675,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Busenberg, E.","contributorId":56796,"corporation":false,"usgs":true,"family":"Busenberg","given":"E.","affiliations":[],"preferred":false,"id":375674,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Glynn, P. D.","contributorId":7008,"corporation":false,"usgs":true,"family":"Glynn","given":"P.","email":"","middleInitial":"D.","affiliations":[],"preferred":false,"id":375673,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Blum, A.E.","contributorId":100514,"corporation":false,"usgs":true,"family":"Blum","given":"A.E.","email":"","affiliations":[],"preferred":false,"id":375676,"contributorType":{"id":1,"text":"Authors"},"rank":4}]}} ,{"id":70016554,"text":"70016554 - 1992 - Residence times in river basins as determined by analysis of long-term tritium records","interactions":[],"lastModifiedDate":"2025-03-06T16:57:14.450633","indexId":"70016554","displayToPublicDate":"1992-01-01T00:00:00","publicationYear":"1992","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":2342,"text":"Journal of Hydrology","active":true,"publicationSubtype":{"id":10}},"title":"Residence times in river basins as determined by analysis of long-term tritium records","docAbstract":"The US Geological Survey has maintained a network of stations to collect samples for the measurement of tritium concentrations in precipitation and streamflow since the early 1960s. Tritium data from outflow waters of river basins draining 4500–75000 km2 are used to determine average residence times of water within the basins. The basins studied are the Colorado River above Cisco, Utah; the Kissimmee River above Lake Okeechobee, Florida; the Mississippi River above Anoka, Minnesota; the Neuse River above Streets Ferry Bridge near Vanceboro, North Carolina; the Potomac River above Point of Rocks, Maryland; the Sacramento River above Sacramento, California; the Susquehanna River above Harrisburg, Pennsylvania. The basins are modeled with the assumption that the outflow in the river comes from two sources—prompt (within-year) runoff from precipitation, and flow from the long-term reservoirs of the basin. Tritium concentration in the outflow water of the basin is dependent on three factors: (1) tritium concentration in runoff from the long-term reservoir, which depends on the residence time for the reservoir and historical tritium concentrations in precipitation; (2) tritium concentrations in precipitation (the within-year runoff component); (3) relative contributions of flow from the long-term and within-year components. Predicted tritium concentrations for the outflow water in the river basins were calculated for different residence times and for different relative contributions from the two reservoirs. A box model was used to calculate tritium concentrations in the long-term reservoir. Calculated values of outflow tritium concentrations for the basin were regressed against the measured data to obtain a slope as close as possible to 1. These regressions assumed an intercept of zero and were carried out for different values of residence time and reservoir contribution to maximize the fit of modeled versus actual data for all the above rivers. The final slopes of the fitted regression lines ranged from 0.95 to 1.01 (correlation coefficient > 0.96) for the basins studied. Values for the residence time of waters within the basins and average relative contributions of the within-year and long-term reservoirs to outflow were obtained. Values for river basin residence times ranged from 2 years for the Kissimmee River basin to 20 years for the Potomac River basin. The residence times indicate the time scale in which the basin responds to anthropogenic inputs. The modeled tritium concentrations for the basins also furnish input data for urban and agricultural settings where these river waters are used.
","language":"English","publisher":"Elsevier","doi":"10.1016/0022-1694(92)90117-E","issn":"00221694","usgsCitation":"Michel, R.L., 1992, Residence times in river basins as determined by analysis of long-term tritium records: Journal of Hydrology, v. 130, no. 1-4, p. 367-378, https://doi.org/10.1016/0022-1694(92)90117-E.","productDescription":"12 p.","startPage":"367","endPage":"378","numberOfPages":"12","costCenters":[],"links":[{"id":489980,"rank":2,"type":{"id":41,"text":"Open Access External Repository Page"},"url":"https://digitalcommons.unl.edu/usgsstaffpub/434","text":"External Repository"},{"id":222910,"rank":1,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"130","issue":"1-4","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505aa974e4b0c8380cd85de2","contributors":{"authors":[{"text":"Michel, R. L.","contributorId":86375,"corporation":false,"usgs":true,"family":"Michel","given":"R.","email":"","middleInitial":"L.","affiliations":[],"preferred":false,"id":373877,"contributorType":{"id":1,"text":"Authors"},"rank":1}]}} ,{"id":70016551,"text":"70016551 - 1992 - Use of a regional atmospheric model to simulate lake-atmosphere feedbacks associated with Pleistocene Lakes Lahontan and Bonneville","interactions":[],"lastModifiedDate":"2012-03-12T17:18:43","indexId":"70016551","displayToPublicDate":"1992-01-01T00:00:00","publicationYear":"1992","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1248,"text":"Climate Dynamics","active":true,"publicationSubtype":{"id":10}},"title":"Use of a regional atmospheric model to simulate lake-atmosphere feedbacks associated with Pleistocene Lakes Lahontan and Bonneville","docAbstract":"A regional model of the atmosphere (version 4 of the NCAR mesoscale model, MM4) was used to assess whether lake-effect precipitation was a significant component of the late-Pleistocene hydrologic budgets of Lakes Lahontan and Bonneville. Control simulations for January and July of 1979 were made using MM4, and the Pleistocene highstand surface areas of the lakes were added to the model and the simulations repeated. In the January simulations, 18% of the moisture added to the modeled atmosphere by Lake Lahontan returned to the Lahontan basin as precipitation, while 32% of the water evaporated from Lake Bonneville fell as precipitation over the Bonneville basin. In the July simulations, 7% of the moisture added to the modeled atmosphere by Lake Lahontan returned to the Lahontan basin as precipitation, and 4% of the water evaporated from Lake Bonneville fell as precipitation over the Bonneville basin. An additonal January simulation was made with the lake surface areas set at onehalf their highstand extents (the average surface area 20 to 15 ka BP). Results from this simulation were similar to the simulation with the highstand lakes, indicating lake-effect precipitation could have been a significant component of the hyrologic budgets of the lakes before and during the highstand period. ?? 1992 Springer-Verlag.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Climate Dynamics","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","publisherLocation":"Springer-Verlag","doi":"10.1007/BF00204820","issn":"09307575","usgsCitation":"Hostetler, S.W., and Giorgi, F., 1992, Use of a regional atmospheric model to simulate lake-atmosphere feedbacks associated with Pleistocene Lakes Lahontan and Bonneville: Climate Dynamics, v. 7, no. 1, p. 39-44, https://doi.org/10.1007/BF00204820.","startPage":"39","endPage":"44","numberOfPages":"6","costCenters":[],"links":[{"id":205309,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1007/BF00204820"},{"id":222858,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"7","issue":"1","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505bbe9ce4b08c986b3296ac","contributors":{"authors":[{"text":"Hostetler, S. W. 0000-0003-2272-8302","orcid":"https://orcid.org/0000-0003-2272-8302","contributorId":42911,"corporation":false,"usgs":true,"family":"Hostetler","given":"S.","email":"","middleInitial":"W.","affiliations":[],"preferred":false,"id":373871,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Giorgi, F.","contributorId":24924,"corporation":false,"usgs":false,"family":"Giorgi","given":"F.","affiliations":[],"preferred":false,"id":373870,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}} ,{"id":70016550,"text":"70016550 - 1992 - Groundwater flow, velocity, and age in a thick, fine-grained till unit in southeastern Wisconsin","interactions":[],"lastModifiedDate":"2025-03-06T16:54:10.902405","indexId":"70016550","displayToPublicDate":"1992-01-01T00:00:00","publicationYear":"1992","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":2342,"text":"Journal of Hydrology","active":true,"publicationSubtype":{"id":10}},"title":"Groundwater flow, velocity, and age in a thick, fine-grained till unit in southeastern Wisconsin","docAbstract":"Piezometer nests were installed at study sites in each of five north-south-trending end moraines of the late Pleistocene Oak Creek Formation in southeastern Wisconsin. The formation is composed primarily of a fine-grained glacial diamicton (till) and laterally continuous and discontinuous, coarse-grained lake and meltwater stream sediment. It overlies the Silurian dolomite aquifer, which is a source of drinking water to rural areas. The average vertical linear velocity and age of ground water in the Oak Creek Formation were estimated by three methods: Darcy's Law, environmental isotopes including 3H, δ2H, δ18O, and 14C (dissolved inorganic carbon), and solute transport modeling of 18O. The F-1 and Metro sites in the Tinley moraine showed excellent agreement among the three estimates of vertical velocity and showed the lowest velocity values (0.3–0.5 cm year−1 downward), which suggests that diffusion controls vertical mass transport at these sites. Although the extrapolated maximum age of ground water is 35 000 years, ground water below 75 m at these sites is probably not older than 15 000 years, which is the maximum age of the formation. Estimates of velocity showed less agreement at study sites in the Lake Border moraine system to the east and ranged from about 0.2 to 20.7 cm year−1; maximum groundwater age could range from 213 to 6000 years. Higher and more variable velocities, perhaps owing to thinner and more heterogeneous sediment in these areas, suggest that diffusion may not dominate vertical mass transport. Heterogeneity and fractures may also promote the development of groundwater flow systems dominated by lateral flow. Because of the uncertainty about the nature of groundwater flow, velocity, and age in the formation east of the Tinley moraine, future waste-disposal activity in southeastern Wisconsin should be confined to the thickest parts of the Tinley moraine near the present F-1 and Metro sites.
","language":"English","publisher":"Elsevier","doi":"10.1016/0022-1694(92)90183-V","issn":"00221694","usgsCitation":"Simpkins, W., and Bradbury, K.R., 1992, Groundwater flow, velocity, and age in a thick, fine-grained till unit in southeastern Wisconsin: Journal of Hydrology, v. 132, no. 1-4, p. 283-319, https://doi.org/10.1016/0022-1694(92)90183-V.","productDescription":"37 p.","startPage":"283","endPage":"319","numberOfPages":"37","costCenters":[],"links":[{"id":222857,"rank":1,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"132","issue":"1-4","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505a2da4e4b0c8380cd5bf79","contributors":{"authors":[{"text":"Simpkins, W.W.","contributorId":41594,"corporation":false,"usgs":true,"family":"Simpkins","given":"W.W.","email":"","affiliations":[],"preferred":false,"id":373868,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Bradbury, K. R.","contributorId":86070,"corporation":false,"usgs":true,"family":"Bradbury","given":"K.","email":"","middleInitial":"R.","affiliations":[],"preferred":false,"id":373869,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}} ,{"id":70017179,"text":"70017179 - 1992 - Gravel-bed deposition and erosion by bedform migration observed ultrasonically during storm flow, North Fork Toutle River, Washington","interactions":[],"lastModifiedDate":"2016-09-14T14:54:16","indexId":"70017179","displayToPublicDate":"1992-01-01T00:00:00","publicationYear":"1992","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":2342,"text":"Journal of Hydrology","active":true,"publicationSubtype":{"id":10}},"title":"Gravel-bed deposition and erosion by bedform migration observed ultrasonically during storm flow, North Fork Toutle River, Washington","docAbstract":"METHANE is a greenhouse gas whose concentration in the atmosphere is increasing. Much of this methane is derived from the metabolism of methane-generating (methanogenic) bacteria and over the past two decades much has been learned about the ecology of methanogens; specific inhibitors of methanogenesis, such as 2-bromoethanesulphonic acid, have proved useful in this regard. In contrast, although much is known about the biochemistry of methane-oxidizing (methanotrophic) bacteria, ecological investigations have been hampered by the lack of an analogous specific inhibitor. Methanotrophs limit the flux of methane to the atmosphere from sediments and consume atmospheric methane, but the quantitative importance of methanotrophy in the global methane budget is not well known. Methylfluoride (CH3F) is known to inhibit oxygen consumption by Methylococcus capsu-latus, and to inhibit the oxidation of 14CH4 to 14CO2 by endosymbionts in mussel gill tissues. Here we report that methylfluoride (MF) inhibits the oxidation of methane by methane monooxy-genase, and by using methylfluoride in field investigations, we find that methanotrophic bacteria can consume more than 90% of the methane potentially available.
","language":"English","publisher":"Springer","doi":"10.1038/356421a0","issn":"00280836","usgsCitation":"Oremland, R.S., and Culbertson, C.W., 1992, Importance of methane-oxidizing bacteria in the methane budget as revealed by the use of a specific inhibitor: Nature, v. 356, no. 6368, p. 421-423, https://doi.org/10.1038/356421a0.","productDescription":"3 p.","startPage":"421","endPage":"423","onlineOnly":"N","additionalOnlineFiles":"N","costCenters":[{"id":552,"text":"San Francisco Bay-Delta","active":false,"usgs":true},{"id":589,"text":"Toxic Substances Hydrology Program","active":true,"usgs":true},{"id":5079,"text":"Pacific Regional Director's Office","active":true,"usgs":true}],"links":[{"id":225205,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"356","issue":"6368","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505a393de4b0c8380cd61860","contributors":{"authors":[{"text":"Oremland, Ronald S. 0000-0001-7382-0147 roremlan@usgs.gov","orcid":"https://orcid.org/0000-0001-7382-0147","contributorId":931,"corporation":false,"usgs":true,"family":"Oremland","given":"Ronald","email":"roremlan@usgs.gov","middleInitial":"S.","affiliations":[{"id":438,"text":"National Research Program - Western Branch","active":true,"usgs":true},{"id":37277,"text":"WMA - Earth System Processes Division","active":true,"usgs":true}],"preferred":true,"id":375630,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Culbertson, Charles W. cculbert@usgs.gov","contributorId":1607,"corporation":false,"usgs":true,"family":"Culbertson","given":"Charles","email":"cculbert@usgs.gov","middleInitial":"W.","affiliations":[{"id":371,"text":"Maine Water Science Center","active":true,"usgs":true}],"preferred":true,"id":375629,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}} ,{"id":70017165,"text":"70017165 - 1992 - Electromagnetic methods for mapping freshwater lenses on Micronesian atoll islands","interactions":[],"lastModifiedDate":"2025-03-06T16:44:34.998388","indexId":"70017165","displayToPublicDate":"1992-01-01T00:00:00","publicationYear":"1992","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":2342,"text":"Journal of Hydrology","active":true,"publicationSubtype":{"id":10}},"title":"Electromagnetic methods for mapping freshwater lenses on Micronesian atoll islands","docAbstract":"Partitioning available energy between plants and bare soil in sparsely vegetated rangelands will allow hydrologists and others to gain a greater understanding of water use by native vegetation, especially phreatophytes. Standard methods of conducting energy budget studies result in measurements of latent and sensible heat fluxes above the plant canopy which therefore include the energy fluxes from both the canopy and the soil. One-dimensional theoretical numerical models have been proposed recently for the partitioning of energy in sparse crops. Bowen ratio and other micrometeorological data collected over phreatophytes growing in areas of shallow ground water in central Nevada were used to evaluate the feasibility of using these models, which are based on surface and within-canopy aerodynamic resistances, to determine heat and water vapor transport in sparsely vegetated rangelands. The models appear to provide reasonably good estimates of sensible heat flux from the soil and latent heat flux from the canopy. Estimates of latent heat flux from the soil were less satisfactory. Sensible heat flux from the canopy was not well predicted by the present resistance formulations. Also, estimates of total above-canopy fluxes were not satisfactory when using a single value for above-canopy bulk aerodynamic resistance.
","language":"English","publisher":"Elsevier","doi":"10.1016/0168-1923(92)90039-7","usgsCitation":"Nichols, W., 1992, Energy budgets and resistances to energy transport in sparsely vegetated rangeland: Agricultural and Forest Meteorology, v. 60, no. 3-4, p. 221-247, https://doi.org/10.1016/0168-1923(92)90039-7.","productDescription":"27 p.","startPage":"221","endPage":"247","numberOfPages":"27","costCenters":[],"links":[{"id":224822,"rank":1,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"60","issue":"3-4","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505a0946e4b0c8380cd51e53","contributors":{"authors":[{"text":"Nichols, William D.","contributorId":98296,"corporation":false,"usgs":true,"family":"Nichols","given":"William D.","affiliations":[],"preferred":false,"id":375564,"contributorType":{"id":1,"text":"Authors"},"rank":1}]}} ,{"id":70017146,"text":"70017146 - 1992 - Evaluation of the depth-integration method of measuring water discharge in large rivers","interactions":[],"lastModifiedDate":"2025-03-06T16:50:55.501777","indexId":"70017146","displayToPublicDate":"1992-01-01T00:00:00","publicationYear":"1992","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":2342,"text":"Journal of Hydrology","active":true,"publicationSubtype":{"id":10}},"title":"Evaluation of the depth-integration method of measuring water discharge in large rivers","docAbstract":"Arsenic‐contaminated mine tailings that were discharged into Whitewood Creek at Lead, South Dakota, from 1876 to 1978, were deposited along the floodplains of Whitewood Creek and the Belle Fourche River. The resulting arsenic‐contaminated floodplain deposit consists mostly of overbank sediments and filled abandoned meanders along White‐wood Creek, and overbank and point‐bar sediments along the Belle Fourche River. Arsenic concentrations of the contaminated sediments indicate the degree of dilution of mine tailings by uncontaminated alluvium.
About 13 per cent of the 110 × 106 Mg of mine tailings that were discharged at Lead were deposited along the Whitewood Creek floodplain. Deposition of mine tailings near the mouth of Whitewood Creek was augmented by an engineered structure. About 29 per cent of the mine tailings delivered by Whitewood Creek were deposited along the Belle Fourche River floodplain. About 60 per cent of that sediment is contained in overbank deposits. Deposition along a segment of the Belle Fourche River was augmented by rapid channel migration. The proportions of contaminated sediment stored along Whitewood Creek and the Belle Fourche River are consistent with sediment storage along the floodplains of perennial streams in other, similar sized watersheds.
","language":"English","publisher":"Wiley","doi":"10.1002/esp.3290170704","usgsCitation":"Marron, D., 1992, Floodplain storage of mine tailings in the Belle Fourche river system: a sediment budget approach: Earth Surface Processes and Landforms, v. 17, no. 7, p. 675-685, https://doi.org/10.1002/esp.3290170704.","productDescription":"11 p.","startPage":"675","endPage":"685","costCenters":[{"id":589,"text":"Toxic Substances Hydrology Program","active":true,"usgs":true}],"links":[{"id":224485,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"},{"id":269248,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1002/esp.3290170704"}],"volume":"17","issue":"7","noUsgsAuthors":false,"publicationDate":"2006-07-26","publicationStatus":"PW","scienceBaseUri":"505a118be4b0c8380cd54024","contributors":{"authors":[{"text":"Marron, D. C.","contributorId":16031,"corporation":false,"usgs":true,"family":"Marron","given":"D. C.","affiliations":[],"preferred":false,"id":375512,"contributorType":{"id":1,"text":"Authors"},"rank":1}]}} ,{"id":70017107,"text":"70017107 - 1992 - Effects of uranium mining discharges on water quality in the Puerco River basin, Arizona and New Mexico","interactions":[],"lastModifiedDate":"2014-10-03T14:50:25","indexId":"70017107","displayToPublicDate":"1992-01-01T00:00:00","publicationYear":"1992","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1927,"text":"Hydrological Sciences Journal","active":true,"publicationSubtype":{"id":10}},"title":"Effects of uranium mining discharges on water quality in the Puerco River basin, Arizona and New Mexico","docAbstract":"From 1967 until 1986, uranium mine dewatering increased dissolved gross alpha, gross beta, uranium and radium activities and dissolved selenium and molybdenum concentrations in the Puerco River as indicated by time trends, areal patterns involving distance from the mines and stream discharge. Additionally, increased dissolved uranium concentrations were identified in groundwater under the Puerco River from where mine discharges entered the river to approximately the Arizona-New Mexico State line about 65 km downstream. Total mass of uranium and gross alpha activity released to the Puerco River by mine dewatering were estimated as 560 Mg (560 × 106 g) and 260 Ci, respectively. In comparison, a uranium mill tailings pond spill on 16 July 1979, released an estimated 1.5 Mg of uranium and 46 Ci of gross alpha activity. Mass balance calculations for alluvial ground water indicate that most of the uranium released did not remain in solution. Sorption of uranium on sediments and uptake of uranium by plants probably removed the uranium from solution.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Hydrological Sciences Journal/Journal des Sciences Hydrologiques","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","publisher":"Taylor & Francis","doi":"10.1080/02626669209492612","usgsCitation":"Van Metre, P., and Gray, J.R., 1992, Effects of uranium mining discharges on water quality in the Puerco River basin, Arizona and New Mexico: Hydrological Sciences Journal, v. 37, no. 5, p. 463-480, https://doi.org/10.1080/02626669209492612.","startPage":"463","endPage":"480","numberOfPages":"18","costCenters":[],"links":[{"id":224821,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"},{"id":294931,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1080/02626669209492612"}],"country":"United States","state":"Arizona, New Mexico","otherGeospatial":"Puerco River","volume":"37","issue":"5","noUsgsAuthors":false,"publicationDate":"2009-12-29","publicationStatus":"PW","scienceBaseUri":"505a081de4b0c8380cd519ab","contributors":{"authors":[{"text":"Van Metre, P. C.","contributorId":92999,"corporation":false,"usgs":true,"family":"Van Metre","given":"P. C.","affiliations":[],"preferred":false,"id":375430,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Gray, J. R.","contributorId":63372,"corporation":false,"usgs":true,"family":"Gray","given":"J.","email":"","middleInitial":"R.","affiliations":[],"preferred":false,"id":375429,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}} ,{"id":70017093,"text":"70017093 - 1992 - The dynamic relationship between ground water and the Columbia River: Using deuterium and oxygen-18 as tracers","interactions":[],"lastModifiedDate":"2025-03-06T16:48:32.42053","indexId":"70017093","displayToPublicDate":"1992-01-01T00:00:00","publicationYear":"1992","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":2342,"text":"Journal of Hydrology","active":true,"publicationSubtype":{"id":10}},"title":"The dynamic relationship between ground water and the Columbia River: Using deuterium and oxygen-18 as tracers","docAbstract":"Deuterium and oxygen-18 were used as natural tracers to investigate the hydraulic relationship between the Columbia River and the Blue Lake gravel aquifer near Portland, Oregon. A time series of stable-isotope data collected from surface and ground waters during a March 1990 aquifer test confirms that the river and aquifer are hydraulically connected. Calculations based on simple mixing show that the river contributed 40–50% of the yield of three wells after 5–6 days of pumping. Data collected during August 1990, show that the river contributed 65–80% of the yield of one well after 22 days of pumping and indicate that the contribution of the river was still increasing.
","language":"English","publisher":"Elsevier","doi":"10.1016/0022-1694(92)90078-A","issn":"00221694","usgsCitation":"McCarthy, K.A., McFarland, W.D., Wilkinson, J., and White, L.D., 1992, The dynamic relationship between ground water and the Columbia River: Using deuterium and oxygen-18 as tracers: Journal of Hydrology, v. 135, no. 1-4, p. 1-12, https://doi.org/10.1016/0022-1694(92)90078-A.","productDescription":"13 p.","startPage":"1","endPage":"12","onlineOnly":"N","additionalOnlineFiles":"N","costCenters":[{"id":518,"text":"Oregon Water Science Center","active":true,"usgs":true}],"links":[{"id":224628,"rank":1,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"135","issue":"1-4","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505baae7e4b08c986b322ab5","contributors":{"authors":[{"text":"McCarthy, K. A.","contributorId":107309,"corporation":false,"usgs":true,"family":"McCarthy","given":"K.","email":"","middleInitial":"A.","affiliations":[],"preferred":false,"id":375371,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"McFarland, W. D.","contributorId":57099,"corporation":false,"usgs":true,"family":"McFarland","given":"W.","email":"","middleInitial":"D.","affiliations":[],"preferred":false,"id":375370,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Wilkinson, J.M.","contributorId":12068,"corporation":false,"usgs":true,"family":"Wilkinson","given":"J.M.","email":"","affiliations":[],"preferred":false,"id":375368,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"White, L. D.","contributorId":14330,"corporation":false,"usgs":true,"family":"White","given":"L.","email":"","middleInitial":"D.","affiliations":[],"preferred":false,"id":375369,"contributorType":{"id":1,"text":"Authors"},"rank":4}]}} ,{"id":70017082,"text":"70017082 - 1992 - Herbicide transport in rivers: Importance of hydrology and geochemistry in nonpoint-source contamination","interactions":[],"lastModifiedDate":"2019-03-19T07:43:39","indexId":"70017082","displayToPublicDate":"1992-01-01T00:00:00","publicationYear":"1992","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":"Herbicide transport in rivers: Importance of hydrology and geochemistry in nonpoint-source contamination","docAbstract":"Measurement of the fluid-content distribution at sites contaminated by immiscible fluids, including crude oil, is needed to better understand the movement of these fluids in the subsurface and to provide data to calibrate and verify numerical models and geophysical methods. A laboratory method was used to quantify the fluid contents of 146 core sections retrieved from boreholes aligned along a 120-m longitudinal transect at a crude-oil spill site near Bemidji, Minnesota, U.S.A. The 47-mm-diameter, minimally disturbed cores spanned a 4-m vertical interval contaminated by oil. Cores were frozen on site in a dry ice-alcohol bath to prevent redistribution and loss of fluids while sectioning the cores. We gravimetrically determined oil and water contents using a two-step method: (1) samples were slurried and the oil was removed by absorption onto strips of hydrophobic porous polyethylene (PPE); and (2) the samples were oven-dried to remove the water. The resulting data show sharp vertical gradients in the water and oil contents and a clearly defined oil body. The subsurface distribution is complex and appears to be influenced by sediment heterogeneities and water-table fluctuations. The center of the oil body has depressed the water-saturated zone boundary, and the oil is migrating laterally within the capillary fringe. The oil contents are as high as 0.3cm3cm−3, which indicates that oil is probably still mobile 10 years after the spill occurred. The thickness of oil measured in wells suggests that accumulated thickness in wells is a poor indicator of the actual distribution of oil in the subsurface. Several possible sources of error are identified with the field and laboratory methods. An error analysis indicates that adsorption of water and sediment into the PPE adds as much as 4% to the measured oil masses and that uncertainties in the calculated sample volume and the assumed oil density introduce an additional ±3% error when the masses are converted to fluid contents.
A method has been developed for the isolation of hydrophilic organic acids from aquatic environments using Amberlite∗ XAD-4 resin. The method uses a two column array of XAD-8 and XAD-4 resins in series. The hydrophobic organic acids, composed primarily of aquatic fulvic acid, are removed from the sample on XAD-8, followed by the isolation of the more hydrophilic organic acids on XAD-4. For samples from a number of diverse environments, more of the dissolved organic carbon was isolated on the XAD-8 resin (23–58%) than on the XAD-4 resin (7–25%). For these samples, the hydrophilic acids have lower carbon and hydrogen contents, higher oxygen and nitrogen contents, and are lower in molecular weight than the corresponding fulvic acids. 13C NMR analyses indicate that the hydrophilic acids have a lower concentration of aromatic carbon and greater heteroaliphatic, ketone and carboxyl content than the fulvic acid.
Increased ground-water contamination from human activities on Long Island has prompted studies to define the pattern and rate of ground-water movement. A two-dimensional, fine-mesh, finite-element model consisting of 11,969 nodes and 22,880 elements was constructed to represent ground-water flow along a north-south section through central Long Island. The model represents average hydrologic conditions within a corridor approximately 15 miles wide. The model solves discrete approximations of both the potential and stream functions. The resulting flownet depicts flow paths and defines the vertical distribution of flow within the section. Ground-water flow rates decrease with depth. Sixty-two percent of the water flows no deeper than the upper glacial (water-table) aquifer, 38 percent enters the underlying Magothy aquifer, and only 3.1 percent enters the Lloyd aquifer. The limiting streamlines for flow to the Magothy and Lloyd aquifers indicate that aquifer recharge areas are narrow east-west bands through the center of the island. The recharge area of the Magothy aquifer is only 5.4 miles wide; that of the Lloyd aquifer is less than 0.5 miles.
","language":"English","publisher":"National Groundwater Association","doi":"10.1111/j.1745-6584.1992.tb01568.x","issn":"0017467X","usgsCitation":"Buxton, H.T., and Modica, E., 1992, Patterns and rates of ground-water flow on Long Island, New York: Groundwater, v. 30, no. 6, p. 857-866, https://doi.org/10.1111/j.1745-6584.1992.tb01568.x.","productDescription":"10 p.","startPage":"857","endPage":"866","numberOfPages":"10","costCenters":[],"links":[{"id":224522,"rank":1,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"30","issue":"6","noUsgsAuthors":false,"publicationDate":"2005-08-04","publicationStatus":"PW","scienceBaseUri":"505a75bae4b0c8380cd77ce7","contributors":{"authors":[{"text":"Buxton, Herbert T. hbuxton@usgs.gov","contributorId":1911,"corporation":false,"usgs":true,"family":"Buxton","given":"Herbert","email":"hbuxton@usgs.gov","middleInitial":"T.","affiliations":[{"id":5056,"text":"Office of the AD Energy and Minerals, and Environmental Health","active":true,"usgs":true}],"preferred":true,"id":375113,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Modica, Edward","contributorId":59431,"corporation":false,"usgs":true,"family":"Modica","given":"Edward","email":"","affiliations":[],"preferred":false,"id":375114,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}} ,{"id":70016999,"text":"70016999 - 1992 - Humic substances and trace metals associated with Fe and Al oxides deposited in an acidic mountain stream","interactions":[],"lastModifiedDate":"2019-03-11T15:00:55","indexId":"70016999","displayToPublicDate":"1992-01-01T00:00:00","publicationYear":"1992","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":5331,"text":"Science of Total Environment","active":true,"publicationSubtype":{"id":10}},"title":"Humic substances and trace metals associated with Fe and Al oxides deposited in an acidic mountain stream","docAbstract":"Hydrous iron and aluminum oxides are deposited on the streambed in the confluence of the Snake River and Deer Creek, two streams in the Colorado Rocky Mountains. The Snake River is acidic and has high concentrations of dissolved Fe and Al. These metals precipitate at the confluence with the pristine, neutral pH, Deer Creek because of the greater pH (4.5-6.0) in the confluence. The composition of the deposited oxides changes consistently with distance downstream, with the most upstream oxide samples having the greatest Fe and organic carbon content. Fulvic acid accounts for most of the organic content of the oxides. Results indicate that streambed oxides in the confluence are not saturated with respect to their capacity to sorb dissolved humic substances from streamwater. The contents of several trace metals (Mn, Zn, Cu, Pb, Ni and Co) also decrease with distance downstream and are correlated with both the Fe and organic carbon contents. Strong metal-binding sites associated with the sorbed fulvic acid are more than sufficient to account for the trace metal content of the oxides. Complexation of trace metals by sorbed fulvic acid may explain the observed downstream decrease in trace metal content.","language":"English","publisher":"Elsevier","doi":"10.1016/0048-9697(92)90113-7","issn":"00489697","usgsCitation":"McKnight, D.M., Wershaw, R., Bencala, K., Zellweger, G.W., and Feder, G.L., 1992, Humic substances and trace metals associated with Fe and Al oxides deposited in an acidic mountain stream: Science of Total Environment, v. 117-118, p. 485-498, https://doi.org/10.1016/0048-9697(92)90113-7.","productDescription":"14 p.","startPage":"485","endPage":"498","costCenters":[{"id":589,"text":"Toxic Substances Hydrology Program","active":true,"usgs":true}],"links":[{"id":205486,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1016/0048-9697(92)90113-7"},{"id":224477,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"117-118","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505a3289e4b0c8380cd5e8b3","contributors":{"authors":[{"text":"McKnight, Diane M.","contributorId":59773,"corporation":false,"usgs":false,"family":"McKnight","given":"Diane","email":"","middleInitial":"M.","affiliations":[{"id":16833,"text":"INSTAAR, University of Colorado","active":true,"usgs":false}],"preferred":false,"id":375088,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Wershaw, R.L.","contributorId":62223,"corporation":false,"usgs":true,"family":"Wershaw","given":"R.L.","affiliations":[],"preferred":false,"id":375089,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Bencala, K.E.","contributorId":105312,"corporation":false,"usgs":true,"family":"Bencala","given":"K.E.","email":"","affiliations":[],"preferred":false,"id":375091,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Zellweger, G. W.","contributorId":55445,"corporation":false,"usgs":true,"family":"Zellweger","given":"G.","email":"","middleInitial":"W.","affiliations":[],"preferred":false,"id":375087,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Feder, G. L.","contributorId":79508,"corporation":false,"usgs":true,"family":"Feder","given":"G.","email":"","middleInitial":"L.","affiliations":[],"preferred":false,"id":375090,"contributorType":{"id":1,"text":"Authors"},"rank":5}]}} ,{"id":70016988,"text":"70016988 - 1992 - Evaluation of methyl fluoride and dimethyl ether as inhibitors of aerobic methane oxidation","interactions":[],"lastModifiedDate":"2023-01-20T17:17:11.467845","indexId":"70016988","displayToPublicDate":"1992-01-01T00:00:00","publicationYear":"1992","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":850,"text":"Applied and Environmental Microbiology","active":true,"publicationSubtype":{"id":10}},"title":"Evaluation of methyl fluoride and dimethyl ether as inhibitors of aerobic methane oxidation","docAbstract":"Methyl fluoride (MF) and dimethyl ether (DME) were effective inhibitors of aerobic methanotrophy in a variety of soils. MF and DME blocked consumption of CH4 as well as the oxidation of 14CH4 to 14CO2, but neither MF nor DME affected the oxidation of [14C]methanol or [14C]formate to 14CO2. Cooxidation of ethane and propane by methane-oxidizing soils was also inhibited by MF. Nitrification (ammonia oxidation) in soils was inhibited by both MF and DME. Production of N2O via nitrification was inhibited by MF; however, MF did not affect N2O production associated with denitrification. Methanogenesis was partially inhibited by MF but not by DME. Methane oxidation was ∼100-fold more sensitive to MF than was methanogenesis, indicating that an optimum concentration could be employed to selectively block methanotrophy. MF inhibited methane oxidation by cell suspensions of Methylococcus capsulatus; however, DME was a much less effective inhibitor.
","language":"English","publisher":"American Society for Microbiology","doi":"10.1128/aem.58.9.2983-2992.1992","issn":"00992240","usgsCitation":"Oremland, R.S., and Culbertson, C.W., 1992, Evaluation of methyl fluoride and dimethyl ether as inhibitors of aerobic methane oxidation: Applied and Environmental Microbiology, v. 58, no. 9, p. 2983-2992, https://doi.org/10.1128/aem.58.9.2983-2992.1992.","productDescription":"10 p.","startPage":"2983","endPage":"2992","onlineOnly":"N","additionalOnlineFiles":"N","costCenters":[{"id":552,"text":"San Francisco Bay-Delta","active":false,"usgs":true},{"id":589,"text":"Toxic Substances Hydrology Program","active":true,"usgs":true},{"id":5079,"text":"Pacific Regional Director's Office","active":true,"usgs":true}],"links":[{"id":480362,"rank":2,"type":{"id":40,"text":"Open Access Publisher Index Page"},"url":"https://doi.org/10.1128/aem.58.9.2983-2992.1992","text":"Publisher Index 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cculbert@usgs.gov","contributorId":1607,"corporation":false,"usgs":true,"family":"Culbertson","given":"Charles","email":"cculbert@usgs.gov","middleInitial":"W.","affiliations":[{"id":371,"text":"Maine Water Science Center","active":true,"usgs":true}],"preferred":true,"id":759560,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}} ,{"id":70016968,"text":"70016968 - 1992 - Comparison of purge and trap GC/MS and purgeable organic chloride analysis for monitoring volatile chlorinated hydrocarbons","interactions":[],"lastModifiedDate":"2019-03-15T05:23:34","indexId":"70016968","displayToPublicDate":"1992-01-01T00:00:00","publicationYear":"1992","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1861,"text":"Ground Water","active":true,"publicationSubtype":{"id":10}},"title":"Comparison of purge and trap GC/MS and purgeable organic chloride analysis for monitoring volatile chlorinated hydrocarbons","docAbstract":"A combined field and laboratory study was conducted to compare purge and trap gas chromatography/mass spectrometry (PT‐GC/MS) and purgeable organic chloride (POC1) analysis for measuring volatile chlorinated hydro‐carbons (VCH) in ground water. Distilled‐water spike and recovery experiments using 10 VCH indicate that at concentrations greater than 1 /ig/1 recovery is more than 80 percent for both methods with relative standard deviations of about 10 percent. Ground‐water samples were collected from a site on Cape Cod, Massachusetts, where a shallow unconfined aquifer has been contaminated by VCH, and were analyzed by both methods. Results for PT‐GC/MS and POC1 analysis of the ground‐water samples were not significantly different (alpha = 0.05, paired t‐test analysis) and indicated little bias between the two methods. Similar conclusions about concentrations and distributions of VCH in the ground‐water contamination plume were drawn from the two data sets. However, only PT‐GC/MS analysis identified the individual compounds present and determined their concentrations, which was necessary for toxicological and biogeochemical evaluation of the contaminated ground water. POC1 analysis was a complimentary method for use with PT‐GC/MS analysis for identifying samples with VCH concentrations below the detection limit or with high VCH concentrations that require dilution. Use of POC1 as a complimentary monitoring method for PT‐GC/MS can result in more efficient use of analytical resources.
The possibility that sulfate-reducing microorganisms contribute to U(VI) reduction in sedimentary environments was investigated. U(VI) was reduced to U(IV) when washed cells of sulfate-grown Desulfovibrio desulfuricans were suspended in a bicarbonate buffer with lactate or H2 as the electron donor. There was no U(VI) reduction in the absence of an electron donor or when the cells were killed by heat prior to the incubation. The rates of U(VI) reduction were comparable to those in respiratory Fe(III)-reducing microorganisms. Azide or prior exposure of the cells to air did not affect the ability of D. desulfuricans to reduce U(VI). Attempts to grow D. desulfuricans with U(VI) as the electron acceptor were unsuccessful. U(VI) reduction resulted in the extracellular precipitation of the U(IV) mineral uraninite. The presence of sulfate had no effect on the rate of U(VI) reduction. Sulfate and U(VI) were reduced simultaneously. Enzymatic reduction of U(VI) by D. desulfuricans was much faster than nonenzymatic reduction of U(VI) by sulfide, even when cells of D. desulfuricans were added to provide a potential catalytic surface for the nonenzymatic reaction. The results indicate that enzymatic U(VI) reduction by sulfate-reducing microorganisms may be responsible for the accumulation of U(IV) in sulfidogenic environments. Furthermore, since the reduction of U(VI) to U(IV) precipitates uranium from solution, D. desulfuricans might be a useful organisms for recovering uranium from contaminated waters and waste streams.
","language":"English","publisher":"American Society for Microbiology","doi":"10.1128/aem.58.3.850-856.1992","issn":"00992240","usgsCitation":"Lovley, D.R., and Phillips, E.J., 1992, Reduction of uranium by Desulfovibrio desulfuricans: Applied and Environmental Microbiology, v. 58, no. 3, p. 850-856, https://doi.org/10.1128/aem.58.3.850-856.1992.","productDescription":"7 p.","startPage":"850","endPage":"856","costCenters":[{"id":589,"text":"Toxic Substances Hydrology Program","active":true,"usgs":true}],"links":[{"id":480364,"rank":2,"type":{"id":40,"text":"Open Access Publisher Index Page"},"url":"https://doi.org/10.1128/aem.58.3.850-856.1992","text":"Publisher Index Page"},{"id":224787,"rank":1,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"58","issue":"3","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"50e4a3e7e4b0e8fec6cdba10","contributors":{"authors":[{"text":"Lovley, Derek R.","contributorId":107852,"corporation":false,"usgs":true,"family":"Lovley","given":"Derek","middleInitial":"R.","affiliations":[],"preferred":false,"id":376003,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Phillips, Elizabeth J.P.","contributorId":37475,"corporation":false,"usgs":true,"family":"Phillips","given":"Elizabeth","middleInitial":"J.P.","affiliations":[],"preferred":false,"id":376002,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}} ,{"id":70016927,"text":"70016927 - 1992 - D4Z: A new renumbering for iterative solution of ground-water flow and solute-transport equations","interactions":[],"lastModifiedDate":"2018-10-01T09:55:03","indexId":"70016927","displayToPublicDate":"1992-01-01T00:00:00","publicationYear":"1992","noYear":false,"publicationType":{"id":24,"text":"Conference Paper"},"publicationSubtype":{"id":19,"text":"Conference Paper"},"title":"D4Z: A new renumbering for iterative solution of ground-water flow and solute-transport equations","docAbstract":"D4 zig-zag (D4Z) is a new renumbering scheme for producing a reduced matrix to be solved by an incomplete LU preconditioned, restarted conjugate-gradient iterative solver. By renumbering alternate diagonals in a zig-zag fashion, a very low sensitivity of convergence rate to renumbering direction is obtained. For two demonstration problems involving groundwater flow and solute transport, iteration counts are related to condition numbers and spectra of the reduced matrices.","largerWorkType":{"id":4,"text":"Book"},"largerWorkTitle":"Finite Elements in Water Resources, Proceedings of the International Conference","largerWorkSubtype":{"id":12,"text":"Conference publication"},"conferenceTitle":"Proceedings of the 9th International Conference on Computational Methods in Water Resources","conferenceDate":"June 1, 1992","conferenceLocation":"Denver, CO","language":"English","publisher":"Computational Mechanics Publ","publisherLocation":"Southampton, United Kingdom","usgsCitation":"Kipp, K., Russell, T., and Otto, J., 1992, D4Z: A new renumbering for iterative solution of ground-water flow and solute-transport equations, in Finite Elements in Water Resources, Proceedings of the International Conference, v. 1, Denver, CO, June 1, 1992, p. 495-502.","productDescription":"8 p.","startPage":"495","endPage":"502","costCenters":[{"id":589,"text":"Toxic Substances Hydrology Program","active":true,"usgs":true}],"links":[{"id":224903,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"1","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"5059fd30e4b0c8380cd4e6b4","contributors":{"authors":[{"text":"Kipp, K.L.","contributorId":96715,"corporation":false,"usgs":true,"family":"Kipp","given":"K.L.","affiliations":[],"preferred":false,"id":374880,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Russell, T.F.","contributorId":86811,"corporation":false,"usgs":true,"family":"Russell","given":"T.F.","email":"","affiliations":[],"preferred":false,"id":374878,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Otto, J.S.","contributorId":94797,"corporation":false,"usgs":true,"family":"Otto","given":"J.S.","email":"","affiliations":[],"preferred":false,"id":374879,"contributorType":{"id":1,"text":"Authors"},"rank":3}]}} ,{"id":70017329,"text":"70017329 - 1992 - Sources of nitrogen and phosphorus to Northern San Francisco Bay","interactions":[],"lastModifiedDate":"2019-03-19T09:18:04","indexId":"70017329","displayToPublicDate":"1992-01-01T00:00:00","publicationYear":"1992","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1583,"text":"Estuaries","active":true,"publicationSubtype":{"id":10}},"title":"Sources of nitrogen and phosphorus to Northern San Francisco Bay","docAbstract":"We studied nutrient sources to the Sacramento River and Suisun Bay (northern San Francisco Bay) and the influence which these sources have on the distributions of dissolved inorganic nitrogen (DIN) and dissolved reactive phosphorus (DRP) in the river and bay. We found that agricultural return flow drains and a municipal wastewater treatment plant were the largest sources of nutrients to the river during low river flow. The Sutter and Colusa agricultural drains contributed about 70% of the transport of DIN and DRP by the river above Sacramento (about 20% of the total transport by the river) between August 8 and September 26, 1985. Further downstream, the Sacramento Regional Wastewater Treatment Plant discharged DIN and DRP at rates that were roughly 70% of total DIN and DRP transport by the river at that time. Concentrations at Rio Vista on the tidal river below the Sacramento plant and at the head of the estuary were related to the reciprocals of the river flows, indicating the importance of dilution of the Sacramento waste by river flows. During very dry years, elevated DIN and DRP concentrations were observed in Suisun Bay. We used a steady-state, one-dimensional, single-compartment box model of the bay, incorporating terms for advection, exchange, and waste input, to calculate a residual rate for all processes not included in the model. We found that the residual for DIN was related to concentrations of chlorophylla (Chla). The residual for DRP was also related to Chla at high concentrations of Chla, but showed significant losses of DRP at low Chla concentrations. These losses were typically equivalent to about 80% of the wastewater input rate.
","language":"English","publisher":"Springer","doi":"10.2307/1352708","issn":"15592723","usgsCitation":"Hager, S., and Schemel, L., 1992, Sources of nitrogen and phosphorus to Northern San Francisco Bay: Estuaries, v. 15, no. 1, p. 40-52, https://doi.org/10.2307/1352708.","productDescription":"13 p.","startPage":"40","endPage":"52","onlineOnly":"N","additionalOnlineFiles":"N","costCenters":[{"id":589,"text":"Toxic Substances Hydrology Program","active":true,"usgs":true}],"links":[{"id":224692,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"},{"id":205530,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1007/BF02690060"}],"country":"United States","state":"California","otherGeospatial":"San Francisco Bay","geographicExtents":"{\n \"type\": \"FeatureCollection\",\n \"features\": [\n {\n \"type\": \"Feature\",\n \"properties\": {},\n \"geometry\": {\n \"type\": \"Polygon\",\n \"coordinates\": [\n [\n [\n -122.52365112304688,\n 37.40943717748788\n ],\n [\n -121.64886474609375,\n 37.40943717748788\n ],\n [\n -121.64886474609375,\n 38.190704293996504\n ],\n [\n -122.52365112304688,\n 38.190704293996504\n ],\n [\n -122.52365112304688,\n 37.40943717748788\n ]\n ]\n ]\n }\n }\n ]\n}","volume":"15","issue":"1","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505b9388e4b08c986b31a53c","contributors":{"authors":[{"text":"Hager, S.W.","contributorId":51746,"corporation":false,"usgs":true,"family":"Hager","given":"S.W.","email":"","affiliations":[],"preferred":false,"id":376147,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Schemel, L. E.","contributorId":89529,"corporation":false,"usgs":true,"family":"Schemel","given":"L. E.","affiliations":[],"preferred":false,"id":376148,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}} ,{"id":70016917,"text":"70016917 - 1992 - Atrazine mineralization potential of alluvial-aquifer sediments under aerobic conditions","interactions":[],"lastModifiedDate":"2019-03-15T06:26:14","indexId":"70016917","displayToPublicDate":"1992-01-01T00:00:00","publicationYear":"1992","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":"Atrazine mineralization potential of alluvial-aquifer sediments under aerobic conditions","docAbstract":"No abstract available.
","language":"English","publisher":"ACS","doi":"10.1021/es00032a010","issn":"0013936X","usgsCitation":"McMahon, P., Chapelle, F.H., and Jagucki, M., 1992, Atrazine mineralization potential of alluvial-aquifer sediments under aerobic conditions: Environmental Science & Technology, v. 26, no. 8, p. 1556-1559, https://doi.org/10.1021/es00032a010.","productDescription":"4 p.","startPage":"1556","endPage":"1559","costCenters":[{"id":589,"text":"Toxic Substances Hydrology Program","active":true,"usgs":true}],"links":[{"id":224711,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"26","issue":"8","noUsgsAuthors":false,"publicationDate":"2002-05-01","publicationStatus":"PW","scienceBaseUri":"5059eecce4b0c8380cd49f8e","contributors":{"authors":[{"text":"McMahon, P.B. 0000-0001-7452-2379","orcid":"https://orcid.org/0000-0001-7452-2379","contributorId":10762,"corporation":false,"usgs":true,"family":"McMahon","given":"P.B.","affiliations":[],"preferred":false,"id":374855,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Chapelle, F. H.","contributorId":101697,"corporation":false,"usgs":true,"family":"Chapelle","given":"F.","email":"","middleInitial":"H.","affiliations":[],"preferred":false,"id":374857,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Jagucki, M.L.","contributorId":57892,"corporation":false,"usgs":true,"family":"Jagucki","given":"M.L.","affiliations":[],"preferred":false,"id":374856,"contributorType":{"id":1,"text":"Authors"},"rank":3}]}} ,{"id":70016911,"text":"70016911 - 1992 - Bioremediation of uranium contamination with enzymatic uranium reduction","interactions":[],"lastModifiedDate":"2019-03-11T11:27:24","indexId":"70016911","displayToPublicDate":"1992-01-01T00:00:00","publicationYear":"1992","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":"Bioremediation of uranium contamination with enzymatic uranium reduction","docAbstract":"Enzymatic uranium reduction by Desulfovibrio desulfuricans readily removed uranium from solution in a batch system or when D. desulfuricans was separated from the bulk of the uranium-containing water by a semipermeable membrane. Uranium reduction continued at concentrations as high as 24 mM. Of a variety of potentially inhibiting anions and metals evaluated, only high concentrations of copper inhibited uranium reduction. Freeze-dried cells, stored aerobically, reduced uranium as fast as fresh cells. D. desulfuricans reduced uranium in pH 4 and pH 7.4 mine drainage waters and in uraniumcontaining groundwaters from a contaminated Department of Energy site. Enzymatic uranium reduction has several potential advantages over other bioprocessing techniques for uranium removal, the most important of which are as follows: the ability to precipitate uranium that is in the form of a uranyl carbonate complex; high capacity for uranium removal per cell; the formation of a compact, relatively pure, uranium precipitate.","language":"English","publisher":"ACS","doi":"10.1021/es00035a023","issn":"0013936X","usgsCitation":"Lovley, D.R., and Phillips, E.J., 1992, Bioremediation of uranium contamination with enzymatic uranium reduction: Environmental Science & Technology, v. 26, no. 11, p. 2228-2234, https://doi.org/10.1021/es00035a023.","productDescription":"7 p.","startPage":"2228","endPage":"2234","costCenters":[{"id":589,"text":"Toxic Substances Hydrology Program","active":true,"usgs":true}],"links":[{"id":224617,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"26","issue":"11","noUsgsAuthors":false,"publicationDate":"2002-05-01","publicationStatus":"PW","scienceBaseUri":"5059f194e4b0c8380cd4ad04","contributors":{"authors":[{"text":"Lovley, Derek R.","contributorId":107852,"corporation":false,"usgs":true,"family":"Lovley","given":"Derek","middleInitial":"R.","affiliations":[],"preferred":false,"id":374840,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Phillips, Elizabeth J.P.","contributorId":37475,"corporation":false,"usgs":true,"family":"Phillips","given":"Elizabeth","middleInitial":"J.P.","affiliations":[],"preferred":false,"id":374839,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}} ]}