Conference Papers
Science Quality and Integrity
The USGS provides unbiased, objective, and impartial scientific information upon which our audiences, including resource managers, planners, and other entities, rely.
The USGS provides unbiased, objective, and impartial scientific information upon which our audiences, including resource managers, planners, and other entities, rely.
Browse almost 5,000 conference papers authored by our scientists and refine search by topic, location, year, and advanced search.
Filter Total Items: 5519
3-D simulations of M9 earthquakes on the Cascadia Megathrust: Key parameters and uncertainty 3-D simulations of M9 earthquakes on the Cascadia Megathrust: Key parameters and uncertainty
Geologic and historical records indicate that the Cascadia subduction zone is capable of generating large, megathrust earthquakes up to magnitude 9. The last great Cascadia earthquake occurred in 1700, and thus there is no direct measure on the intensity of ground shaking or specific rupture parameters from seismic recordings. We use 3-D numerical simulations to generate broadband (0-10...
Authors
Erin Wirth, Arthur D. Frankel, John Vidale, Nasser A. Marafi, William J. Stephenson
Geothermal implications of a refined composition-age geologic map for the volcanic terrains of southeast Oregon, northeast California, and southwest Idaho, USA Geothermal implications of a refined composition-age geologic map for the volcanic terrains of southeast Oregon, northeast California, and southwest Idaho, USA
Sufficient temperatures to generate steam likely exist under most of the dominantly volcanic terrains of southeast Oregon, northeast California, and southeast Idaho, USA, but finding sufficient permeability to allow efficient advective heat exchange is an outstanding challenge. A new thematic interpretation of existing state-level geologic maps provides an updated and refined...
Authors
Erick R. Burns, Marshall W. Gannett, David R. Sherrod, Mackenzie K. Keith, Jennifer A. Curtis, James R. Bartolino, John A. Engott, Benjamin P. Scandella, Michelle A. Stern, Alan L. Flint
A reference landform ontology for automated delineation of depression landforms from DEMs A reference landform ontology for automated delineation of depression landforms from DEMs
Abstract The landform reference ontology (LFRO) is being developed to formalize ontological distinctions underlying naïve geographic cognition and reasoning about landforms. The LFRO taxonomy is currently based only on form-based distinctions. In this significantly revised version, several new categories have been added to explicate ontological distinctions related to material-spatial...
Authors
Gaurav Sinha, Samantha Arundel, Torsten Hahmann, E. Lynn Usery, Kathleen C. Stewart, David Mark
Climate change-driven cliff and beach evolution at decadal to centennial time scales Climate change-driven cliff and beach evolution at decadal to centennial time scales
Here we develop a computationally efficient method that evolves cross-shore profiles of sand beaches with or without cliffs along natural and urban coastal environments and across expansive geographic areas at decadal to centennial time-scales driven by 21st century climate change projections. The model requires projected sea level rise rates, extrema of nearshore wave conditions, bluff...
Authors
Li H. Erikson, Andrea C. O'Neill, Patrick L. Barnard, Sean Vitousek, Patrick W. Limber
Landsat-8 TIRS thermal radiometric calibration status Landsat-8 TIRS thermal radiometric calibration status
The Thermal Infrared Sensor (TIRS) instrument is the thermal-band imager on the Landsat-8 platform. The initial onorbit calibration estimates of the two TIRS spectral bands indicated large average radiometric calibration errors, -0.29 and -0.51 W/m2 sr μm or -2.1K and -4.4K at 300K in Bands 10 and 11, respectively, as well as high variability in the errors, 0.87K and 1.67K (1-σ)...
Authors
Julia A. Barsi, Brian L. Markham, Matthew Montanaro, Aaron Gerace, Simon Hook, John R. Schott, Nina G. Raqueno, Ron Morfitt
Using remotely sensed data to estimate river characteristics including water-surface velocity and discharge Using remotely sensed data to estimate river characteristics including water-surface velocity and discharge
This paper describes a project combining field studies and analyses directed at providing an assessment of the accuracy of remotely sensed methods for determining river characteristics such as velocity and discharge. In particular, we describe a remote sensing method for surface velocities using mid-wave thermal camera videography combined with image analysis. One of the critical...
Authors
Jonathan M. Nelson, Paul J. Kinzel, Carl J. Legleiter, Richard R. McDonald, Brandon Overstreet, Jeffrey S. Conaway