Institution
United States Geological Survey
Government•Reston, Virginia, United States•
About: United States Geological Survey is a government organization based out in Reston, Virginia, United States. It is known for research contribution in the topics: Population & Groundwater. The organization has 17899 authors who have published 51097 publications receiving 2479125 citations. The organization is also known as: USGS & US Geological Survey.
Topics: Population, Groundwater, Volcano, Aquifer, Fault (geology)
Papers published on a yearly basis
Papers
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TL;DR: In this paper, the authors provide field evidence of the existence, magnitude and formative processes of a sea-level-rise hotspot located in one of the world's most densely populated coastal areas encompassing Boston, Providence, New York City, Philadelphia, Baltimore and Virginia Beach.
Abstract: This study provides field evidence of the existence, magnitude and formative processes of a sea-level-rise hotspot located in one of the world’s most densely populated coastal areas encompassing Boston, Providence, New York City, Philadelphia, Baltimore and Norfolk Virginia Beach.
705 citations
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TL;DR: In this article, a stochastic finite-fault model was used to predict ground motion for hard-rock and soil sites in eastern North America (ENA), including estimates of their aleatory uncertainty (vari- ability).
Abstract: New earthquake ground-motion relations for hard-rock and soil sites in eastern North America (ENA), including estimates of their aleatory uncertainty (vari- ability) have been developed based on a stochastic finite-fault model. The model incorporates new information obtained from ENA seismographic data gathered over the past 10 years, including three-component broadband data that provide new in- formation on ENA source and path effects. Our new prediction equations are similar to the previous ground-motion prediction equations of Atkinson and Boore (1995), which were based on a stochastic point-source model. The main difference is that high-frequency amplitudes (f 5 Hz) are less than previously predicted (by about a factor of 1.6 within 100 km), because of a slightly lower average stress parameter (140 bars versus 180 bars) and a steeper near-source attenuation. At frequencies less than 5 Hz, the predicted ground motions from the new equations are generally within 25% of those predicted by Atkinson and Boore (1995). The prediction equations agree well with available ENA ground-motion data as evidenced by near-zero average residuals (within a factor of 1.2) for all frequencies, and the lack of any significant residual trends with distance. However, there is a tendency to positive residuals for moderate events at high frequencies in the distance range from 30 to 100 km (by as much as a factor of 2). This indicates epistemic uncertainty in the prediction model. The positive residuals for moderate events at 100 km could be eliminated by an increased stress parameter, at the cost of producing negative residuals in other magnitude-distance ranges; adjustment factors to the equations are provided that may be used to model this effect.
703 citations
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TL;DR: Water samples were collected from a network of 47 groundwater sites across 18 states in 2000 and detections of some OWCs could have resulted from leaching of well-construction materials and/or other site-specific conditions related to well construction and materials.
700 citations
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TL;DR: All plants studied in natural ecosystems are symbiotic with fungi, which obtain nutrients while either positively, negatively, or neutrally affecting host fitness, and plant adaptation to selective pressures is considered to be regulated by the plant genome.
Abstract: All plants studied in natural ecosystems are symbiotic with fungi ([1][1]), which obtain nutrients while either positively, negatively, or neutrally affecting host fitness ([2][2]). Plant adaptation to selective pressures is considered to be regulated by the plant genome ([3][3]). To test whether
700 citations
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University of Arizona1, United States Geological Survey2, Jet Propulsion Laboratory3, California Institute of Technology4, University College London5, RAND Corporation6, Smithsonian Astrophysical Observatory7, State University of New York System8, Cornell University9, New Mexico State University10, University of Hawaii11, NASA Headquarters12, University of Wisconsin-Madison13
TL;DR: The cameras aboard Voyager 1 have provided a closeup view of the Jupiter system, revealing heretofore unknown characteristics and phenomena associated with the planet's atmosphere and the surfaces of its five major satellites.
Abstract: The cameras aboard Voyager 1 have provided a closeup view of the Jupiter system, revealing heretofore unknown characteristics and phenomena associated with the planet's atmosphere and the surfaces of its five major satellites. On Jupiter itself, atmospheric motions-the interaction of cloud systems-display complex vorticity. On its dark side, lightning and auroras are observed. A ring was discovered surrounding Jupiter. The satellite surfaces display dramatic differences including extensive active volcanism on Io, complex tectonism on Ganymede and possibly Europa, and flattened remnants of enormous impact features on Callisto.
699 citations
Authors
Showing all 18026 results
Name | H-index | Papers | Citations |
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Derek R. Lovley | 168 | 582 | 95315 |
Steven Williams | 144 | 1375 | 86712 |
Thomas J. Smith | 140 | 1775 | 113919 |
Jillian F. Banfield | 127 | 562 | 60687 |
Kurunthachalam Kannan | 126 | 820 | 59886 |
J. D. Hansen | 122 | 975 | 76198 |
John P. Giesy | 114 | 1162 | 62790 |
David Pollard | 108 | 438 | 39550 |
Alan Cooper | 108 | 746 | 45772 |
Gordon E. Brown | 100 | 454 | 32152 |
Gerald Schubert | 98 | 614 | 34505 |
Peng Li | 95 | 1548 | 45198 |
Vipin Kumar | 95 | 614 | 59034 |
Susan E. Trumbore | 95 | 337 | 34844 |
Alfred S. McEwen | 92 | 624 | 28730 |