Conference Papers
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The USGS provides unbiased, objective, and impartial scientific information upon which our audiences, including resource managers, planners, and other entities, rely.
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Mapping stream and floodplain geomorphic characteristics with the Floodplain and Channel Evaluation Tool (FACET) in the Mid-Atlantic Region, United States Mapping stream and floodplain geomorphic characteristics with the Floodplain and Channel Evaluation Tool (FACET) in the Mid-Atlantic Region, United States
Quantifying channel and floodplain geomorphic characteristics is essential for understanding and modeling sediment and nutrient dynamics in fluvial systems. The increased availability of high-resolution elevation data from light detection and ranging (lidar) has helped improve methods for extracting these metrics at a greater accuracy across regional scales. The Floodplain and Channel...
Authors
Marina J. Metes, Kristina G. Hopkins, Labeeb Ahmed, Samuel Lamont, Peter R. Claggett, Gregory E. Noe
Assessing the long-term earthquake risk for the US National Bridge Inventory (NBI) Assessing the long-term earthquake risk for the US National Bridge Inventory (NBI)
We estimate annualized earthquake loss associated with over 600,000 bridges located throughout the contiguous United States. Each year, the Federal Highway Administration, in partnership with State Departments of Transportation, undertake a massive exercise to update the National Bridge Inventory (NBI) by combining data from states, federal agencies, local jurisdictions, and tribal...
Authors
Kishor S. Jaiswal, N. Simon Kwong, S. S. Yen, D. Bausch, Kuo-wan Lin, Nico Luco, David J. Wald, J. Rozelle
Using video survey to examine the effect of habitat on gag grouper encounter Using video survey to examine the effect of habitat on gag grouper encounter
Gag is a reef fish that was declared overfished in the Gulf of Mexico (GOM) in 2009. Although Gag are no longer listed as overfished, fisheries managers are concerned that stocks may not be recovering. Our objective was to identify habitat characteristics important to Gag, and their effect on the probability of Gag occurrence. We obtained data from three separate fisheries-independent...
Authors
G. Alvarez, D. Gandy, Brian J. Irwin, Cecil A. Jennings, Adam Fox
Why did Great Basin Eocene magmatism generate Carlin-type gold deposits when extensive Jurassic to Middle Miocene magmatism did not? Lessons from the Cortez Region, Northern Nevada, USA Why did Great Basin Eocene magmatism generate Carlin-type gold deposits when extensive Jurassic to Middle Miocene magmatism did not? Lessons from the Cortez Region, Northern Nevada, USA
No abstract available.
Authors
Christopher D. Henry, David A. John, Matt T. Heizler, Robert W. Leonardson, Joseph P. Colgan, Kathryn E. Watts, Michael W. Ressel, Brian L. Cousens
Landsat Collection 2 geometric calibration updates Landsat Collection 2 geometric calibration updates
The U.S. Geological Survey (USGS) changed the management and delivery of Landsat products to the public in its archive through the implementation of Collections. The Collections process ensures consistent data quality through time and across all the Landsat sensors with a few modifications to the metadata. The consistent data products from Collections are more conducive for applications...
Authors
R. Rengarajan, Michael J. Choate, James C. Storey, Shannon Franks, Esad Micijevic
Exploring the potential of ground-penetrating radar (GPR) to measure the extent of chronic disturbance in peatlands: Examples from acid mine drainage and peat fire Exploring the potential of ground-penetrating radar (GPR) to measure the extent of chronic disturbance in peatlands: Examples from acid mine drainage and peat fire
Peatlands are accumulations of partially decayed organic soil that cover approximately 3% of Earth’s surface and have been shown to serve essential environmental and ecological functions such as sequestering carbon, purifying water, and providing habitat for organisms. However, peatlands are threatened by pressures from agriculture, urban development, mining, and climate change...
Authors
Neil Terry, Robert L. Runkel, Dale D. Werkema, Elizabeth Rutila, Xavier Comas, Matthew Warren, Agus Kristiyono, Daniel Murdiyarso