On the phylogenetic position of the scrub-birds (Passeriformes: Menurae: Atrichornithidae) of Australia
R.T. Chesser, Have J. ten
2007, Journal of Ornithology (148) 471-476
Evolutionary relationships of the scrub-birds Atrichornis were investigated using complete sequences of the recombination-activating gene RAG-1 and the proto-oncogene c-mos for two individuals of the noisy scrub-bird Atrichornis clamosus. Phylogenetic analysis revealed that Atrichornis was sister to the genus Menura (the lyrebirds) and that these two genera (the Menurae) were...
Two-dimensional surface river flow patterns measured with paired RiverSondes
C.C. Teague, D.E. Barrick, P.M. Lilleboe, R. T. Cheng
2007, Conference Paper, International Geoscience and Remote Sensing Symposium (IGARSS)
Two RiverSondes were operated simultaneously in close proximity in order to provide a two-dimensional map of river surface velocity. The initial test was carried out at Threemile Slough in central California. The two radars were installed about 135 m apart on the same bank of the channel. Each radar used...
Distribution, habitat, size, and color pattern of Cnemidophorus lemniscatus (Sauria: Teiidae) on Cayo Cochino Pequeño, Honduras
Chad E. Montgomery, Robert N. Reed, Hayley J. Shaw, Scott M. Boback, James M. Walker
2007, Southwestern Naturalist (52) 38-45
Cayo Cochino Pequeño is a 0.64-km2 Caribbean island in the Cayos Cochinos archipelago, Department of Islas de la Bahía, Honduras. One published report noted the presence of the rainbow whiptail (Cnemidophorus lemniscatus) on Cayo Cochino Pequeño, but nothing is known about the biology of this insular population. During a part of...
Remote sensing and GIS technology in the Global Land Ice Measurements from Space (GLIMS) Project
B. Raup, Andreas Kaab, J.S. Kargel, M.P. Bishop, G. Hamilton, E. Lee, F. Paul, F. Rau, D. Soltesz, S.J.S. Khalsa, M. Beedle, C. Helm
2007, Computers & Geosciences (33) 104-125
Global Land Ice Measurements from Space (GLIMS) is an international consortium established to acquire satellite images of the world's glaciers, analyze them for glacier extent and changes, and to assess these change data in terms of forcings. The consortium is organized into a system of Regional Centers, each of which...
Sizing up earthquake damage: Differing points of view
S. Hough, A. Bolen
2007, Geotimes (52) 46-48
When a catastrophic event strikes an urban area, many different professionals hit the ground running. Emergency responders respond, reporters report, and scientists and engineers collect and analyze data. Journalists and scientists may share interest in these events, but they have very different missions. To a journalist, earthquake damage is news....
Local magnitude determinations for intermountain seismic belt earthquakes from broadband digital data
J.C. Pechmann, S.J. Nava, F.M. Terra, J.C. Bernier
2007, Bulletin of the Seismological Society of America (97) 557-574
The University of Utah Seismograph Stations (UUSS) earthquake catalogs for the Utah and Yellowstone National Park regions contain two types of size measurements: local magnitude (ML) and coda magnitude (MC), which is calibrated against ML. From 1962 through 1993, UUSS calculated ML values for southern and central Intermountain Seismic Belt...
Nutrients stimulate leaf breakdown rates and detritivore biomass: Bottom-up effects via heterotrophic pathways
J.L. Greenwood, A.D. Rosemond, J.B. Wallace, W. F. Cross, H.S. Weyers
2007, Oecologia (151) 637-649
Most nutrient enrichment studies in aquatic systems have focused on autotrophic food webs in systems where primary producers dominate the resource base. We tested the heterotrophic response to long-term nutrient enrichment in a forested, headwater stream. Our study design consisted of 2 years of pretreatment data in a reference and...
Advanced technologies demonstrated by the miniature integrated camera and spectrometer (MICAS) aboard deep space 1
D.H. Rodgers, P.M. Beauchamp, L.A. Soderblom, R. H. Brown, G.-S. Chen, M. Lee, B.R. Sandel, D.A. Thomas, R.T. Benoit, R.V. Yelle
2007, Space Science Reviews (129) 309-326
MICAS is an integrated multi-channel instrument that includes an ultraviolet imaging spectrometer (80-185 nm), two high-resolution visible imagers (10-20 ??rad/pixel, 400-900 nm), and a short-wavelength infrared imaging spectrometer (1250-2600 nm). The wavelength ranges were chosen to maximize the science data that could be collected using existing semiconductor technologies and avoiding...
Integrated ground-water monitoring strategy for NRC-licensed facilities and sites: Case study applications
V. Price, T. Temples, R. Hodges, Z. Dai, D. Watkins, J. Imrich
2007, Report
This document discusses results of applying the Integrated Ground-Water Monitoring Strategy (the Strategy) to actual waste sites using existing field characterization and monitoring data. The Strategy is a systematic approach to dealing with complex sites. Application of such a systematic approach will reduce uncertainty associated with site analysis, and therefore...
Earthquake-by-earthquake fold growth above the Puente Hills blind thrust fault, Los Angeles, California: Implications for fold kinematics and seismic hazard
L.A. Leon, S.A. Christofferson, J.F. Dolan, J.H. Shaw, T. L. Pratt
2007, Journal of Geophysical Research B: Solid Earth (112)
Boreholes and high-resolution seismic reflection data collected across the forelimb growth triangle above the central segment of the Puente Hills thrust fault (PHT) beneath Los Angeles, California, provide a detailed record of incremental fold growth during large earthquakes on this major blind thrust fault. These data document fold growth within...
Heat, chloride, and specific conductance as ground water tracers near streams
M.H. Cox, G.W. Su, J. Constantz
2007, Ground Water (45) 187-195
Commonly measured water quality parameters were compared to heat as tracers of stream water exchange with ground water. Temperature, specific conductance, and chloride were sampled at various frequencies in the stream and adjacent wells over a 2-year period. Strong seasonal variations in stream water...
Geomorphic and sedimentologic evidence for the separation of Lake Superior from Lake Michigan and Huron
J.W. Johnston, T.A. Thompson, D.A. Wilcox, S.J. Baedke
2007, Journal of Paleolimnology (37) 349-364
A common break was recognized in four Lake Superior strandplain sequences using geomorphic and sedimentologic characteristics. Strandplains were divided into lakeward and landward sets of beach ridges using aerial photographs and topographic surveys to identify similar surficial features and core data to identify similar subsurface features. Cross-strandplain, elevation-trend changes from...
Late Quaternary paleoenvironments of an ephemeral wetland in North Dakota, USA: Relative interactions of ground-water hydrology and climate change
C.H. Yansa, W.E. Dean, E.C. Murphy
2007, Journal of Paleolimnology (38) 441-457
This study of fossils (pollen, plant macrofossils, stomata and fish) and sediments (lithostratigraphy and geochemistry) from the Wendel site in North Dakota, USA, emphasizes the importance of considering ground-water hydrology when deciphering paleoclimate signals from lakes in postglacial landscapes. The Wendel site was a paleolake from about 11,500 14C yr...
An evaluation of freshwater mussel toxicity data in the derivation of water quality guidance and standards for copper
F.A. March, F.J. Dwyer, T. Augspurger, C.G. Ingersoll, N. Wang, C.A. Mebane
2007, Environmental Toxicology and Chemistry (26) 2066-2074
The state of Oklahoma has designated several areas as freshwater mussel sanctuaries in an attempt to provide freshwater mussel species a degree of protection and to facilitate their reproduction. We evaluated the protection afforded freshwater mussels by the U.S. Environmental Protection Agency (U.S. EPA) hardness-based 1996 ambient copper water quality...
On using surface-source downhole-receiver logging to determine seismic slownesses
D.M. Boore, E.M. Thompson
2007, Soil Dynamics and Earthquake Engineering (27) 971-985
We present a method to solve for slowness models from surface-source downhole-receiver seismic travel-times. The method estimates the slownesses in a single inversion of the travel-times from all receiver depths and accounts for refractions at layer boundaries. The number and location of layer interfaces in the model can be selected...
Chinook salmon use of spawning patches: Relative roles of habitat quality, size, and connectivity
D.J. Isaak, R.F. Thurow, B.E. Rieman, J. B. Dunham
2007, Ecological Applications (17) 352-364
Declines in many native fish populations have led to reassessments of management goals and shifted priorities from consumptive uses to species preservation. As management has shifted, relevant environmental characteristics have evolved from traditional metrics that described local habitat quality to characterizations of habitat size and connectivity. Despite the implications this...
Use of streamflow data to estimate base flowground-water recharge for Wisconsin
W.A. Gebert, M.J. Radloff, E.J. Considine, J.L. Kennedy
2007, Journal of the American Water Resources Association (43) 220-236
The average annual base flow/recharge was determined for streamflow-gaging stations throughout Wisconsin by base-flow separation. A map of the State was prepared that shows the average annual base flow for the period 1970-99 for watersheds at 118 gaging stations. Trend analysis was performed on 22 of the 118 streamflow-gaging stations...
Geostatistical three-dimensional modeling of oolite shoals, St. Louis Limestone, southwest Kansas
L. Qi, T.R. Carr, R.H. Goldstein
2007, American Association of Petroleum Geologists Bulletin (91) 69-96
In the Hugoton embayment of southwestern Kansas, reservoirs composed of relatively thin (<4 m; <13.1 ft) oolitic deposits within the St. Louis Limestone have produced more than 300 million bbl of oil. The geometry and distribution of oolitic deposits control the heterogeneity of the reservoirs, resulting in exploration challenges and...
Climate correlates of 20 years of trophic changes in a high-elevation riparian system
T. E. Martin
2007, Ecology (88) 367-380
The consequences of climate change for ecosystem structure and function remain largely unknown. Here, I examine the ability of climate variation to explain long-term changes in bird and plant populations, as well as trophic interactions in a high-elevation riparian system in central Arizona, USA, based on 20 years of study....
High-resolution proxy record of Holocene climate from a loess section in Southwestern Nebraska, USA
X. Miao, J.A. Mason, W.C. Johnson, Hongfang Wang
2007, Palaeogeography, Palaeoclimatology, Palaeoecology (245) 368-381
Multi-proxy analysis was used to produce a high-resolution paleoclimatic record from an exceptionally thick section of the Holocene Bignell Loess near Wauneta, Southwestern Nebraska, in the central Great Plains. The Wauneta section has excellent age control, based on optically stimulated luminescence (OSL) and radiocarbon dating, and records multiple episodes of...
Landslide susceptibility revealed by LIDAR imagery and historical records, Seattle, Washington
W.H. Schulz
2007, Engineering Geology (89) 67-87
Light detection and ranging (LIDAR) data were used to visually map landslides, headscarps, and denuded slopes in Seattle, Washington. Four times more landslides were mapped than by previous efforts that used aerial photographs. The mapped landforms (landslides, headscarps, and denuded slopes) were created by many individual landslides. The spatial distribution...
Recent climate trends and implications for water resources in the Catskill Mountain region, New York, USA
Douglas A. Burns, Julian Klaus, Michael R. McHale
2007, Journal of Hydrology (336) 155-170
Climate scientists have concluded that the earth’s surface air temperature warmed by 0.6 °C during the 20th century, and that warming induced by increasing concentrations of greenhouse gases is likely to continue in the 21st century, accompanied by changes in the hydrologic cycle. Climate change has important implications in the Catskill...
Isotopic characterization of three groundwater recharge sources and inferences for selected aquifers in the upper Klamath Basin of Oregon and California, USA
P.C. Palmer, M. W. Gannett, S.R. Hinkle
2007, Journal of Hydrology (336) 17-29
Stable isotope (??D and ??18O) signatures of three principal groundwater recharge areas in the 21,000-km2 upper Klamath Basin are used to infer recharge sources for aquifers in the interior parts of the basin. Two of the principal recharge areas, the Cascade Range on the western and southern margin of the...
Correcting acoustic Doppler current profiler discharge measurement bias from moving-bed conditions without global positioning during the 2004 Glen Canyon Dam controlled flood on the Colorado River
J. W. Gartner, N. K. Ganju
2007, Limnology and Oceanography: Methods (5) 156-162
Discharge measurements were made by acoustic Doppler current profiler at two locations on the Colorado River during the 2004 controlled flood from Glen Canyon Dam, Arizona. Measurement hardware and software have constantly improved from the 1980s such that discharge measurements by acoustic profiling instruments are now routinely made over a...
Comparison of the dust distributions in the innermost comae of comets-1P/Halley and 19P/Borrelly spacecraft observations
T.-M. Ho, N. Thomas, D. C. Boice, M. Combi, L.A. Soderblom, V. Tenishev
2007, Planetary and Space Science (55) 974-985
We present a comparative study of the inner comae of comets 1P/Halley and 19P/Borrelly using data from the Halley Multicolour Camera (HMC) onboard Giotto and the Miniature Integrated Camera and Spectrometer onboard Deep Space 1 (DS1). We show that the dust brightness dependence as a function of radial distance is...
