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Browse more than 160,000 publications authored by our scientists over the past 100+ year history of the USGS.  Publications available are: USGS-authored journal articles, series reports, book chapters, other government publications, and more.

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We are focused on some of the most significant issues society faces, and our science is making a substantial contribution to the well-being of the Nation and the world. Learn more about the major topics our research covers and the programs focused on those topics.

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Filter Total Items: 175495

Spatial differences in soil nutrients along a hydrographic gradient on floodplains in Dongting Lake Spatial differences in soil nutrients along a hydrographic gradient on floodplains in Dongting Lake

The spatial heterogeneity of soil nutrients is crucial for the water bird and whole floodplain wetland ecosystem in large lakes, and it is influenced by the dramatic water level changes and sedimentation progress in West Dongting Lake (WDL). Soil samples were collected at various soil depths along the Yuan River and Li River that feed into WDL. The concentrations of soil total organic...
Authors
Jiayi Lin, Yuanmi Wu, Dong Peng, Mingzhu Chen, Lingli Peng, Beth Middleton, Ting Lei
By
Ecosystems Mission Area, Wetland and Aquatic Research Center

SUTRA— A code for simulation of saturated-unsaturated, variable-density groundwater flow with solute or energy transport—Documentation of the version 4.0 enhancements—Freeze-thaw capability, saturation and relative-permeability relations, spatially varyin SUTRA— A code for simulation of saturated-unsaturated, variable-density groundwater flow with solute or energy transport—Documentation of the version 4.0 enhancements—Freeze-thaw capability, saturation and relative-permeability relations, spatially varyin

Version 4.0 of the Saturated-Unsaturated Transport (SUTRA) software code provides the capability to simulate the freezing and thawing of groundwater during energy transport simulations under saturated and unsaturated conditions. In addition to the types of hydrogeologic processes that SUTRA has been able to simulate in the past, this version can be used to study the effects of the freeze...
Authors
Clifford I. Voss, Alden M. Provost, Jeffrey M. McKenzie, Barret L. Kurylyk
By
Water Resources Mission Area

Using mercury and lead stable isotopes to assess mercury, lead, and trace metal source contributions to Great Salt Lake, Utah, USA Using mercury and lead stable isotopes to assess mercury, lead, and trace metal source contributions to Great Salt Lake, Utah, USA

Great Salt Lake is a critical habitat for migratory birds that is threatened by elevated metal concentrations, including mercury (Hg) and lead (Pb), and is subject to severe hydrologic changes, such as declining lake level. When assessing metal profiles recorded in Great Salt Lake sediment, a large data gap exists regarding the sources of metals within the system, which is complicated by...
Authors
Samuel Francisco Lopez, Sarah E. Janssen, Michael T. Tate, Diego P. Fernandez, Christopher R. Anderson, Grace Jane Armstrong, Thomas Charng-Shuen Wang, William P. Johnson
By
Water Resources Mission Area, Upper Midwest Water Science Center, Utah Water Science Center, M3 Research Laboratory

Geophysical characterization of an alkaline‑carbonatite complex using gravity and magnetic methods at Magnet Cove, Arkansas, USA Geophysical characterization of an alkaline‑carbonatite complex using gravity and magnetic methods at Magnet Cove, Arkansas, USA

The Magnet Cove alkaline‑carbonatite complex (MCC), located in the Ouachita Mountains of south-central Arkansas in the United States, hosts an extensive variety of rare rock types and critical mineral resources with physical properties (density and magnetization) that contrast significantly with the sedimentary rocks into which they have intruded. Newly acquired ground-based gravity and...
Authors
Chelsea Morgan Amaral, Andrew P. Lamb, Gregory Dumond
By
Mineral Resources Program, Geology, Geophysics, and Geochemistry Science Center

Hydrologic and hydraulic analyses of Silver Creek and selected tributaries associated with Scott Air Force Base, Illinois, 2022–24 Hydrologic and hydraulic analyses of Silver Creek and selected tributaries associated with Scott Air Force Base, Illinois, 2022–24

A hydrologic model of the Silver Creek Basin in southwest Illinois, and a hydraulic model of a selected reach of Silver Creek and local tributaries on and near Scott Air Force Base, Illinois, were developed to assess the effects of temporal land-use development in the Silver Creek Basin, the potential effects of projected changes based on future precipitation, and the effects of added...
Authors
Charles V. Cigrand, David C. Heimann, Paul H. Rydlund
By
Central Midwest Water Science Center

The 3D Elevation Program—Supporting the Kansas Economy The 3D Elevation Program—Supporting the Kansas Economy

Introduction High-resolution elevation data for Kansas inform decision making to improve the State’s economy. Existing elevation data coverage is used to support State water planning initiatives, facilitate infrastructure management, and improve resilience to natural disasters. The expanding availability of current and more accurate elevation data helps better support natural resources
Authors
Claire DeVaughan
By
National Geospatial Program, 3D Elevation Program
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