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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Automated road breaching to enhance extraction of natural drainage networks from elevation models through deep learning Automated road breaching to enhance extraction of natural drainage networks from elevation models through deep learning
High-resolution (HR) digital elevation models (DEMs), such as those at resolutions of 1 and 3 meters, have increasingly become more widely available, along with lidar point cloud data. In a natural environment, a detailed surface water drainage network can be extracted from a HR DEM using flow-direction and flow-accumulation modeling. However, elevation details captured in HR DEMs, such...
Authors
Larry Stanislawski, Tyler Brockmeyer, Ethan J. Shavers
Forecasting for dry and wet avalanches during mixed rain and snow storm events Forecasting for dry and wet avalanches during mixed rain and snow storm events
Natural wet slab avalanches release when rain or melt water decreases snowpack strength, and natural dry slab avalanches release when an increased load overcomes snowpack strength. This study investigates avalanche activity resulting from mixed rain and snow falling on a faceted snowpack. This scenario produced an extensive slab avalanche cycle in March 2018 in the mountains near Ketchum...
Authors
Scott Savage, Erich Peitzsch, Simon Trautman, Benjamin VandenBos
Detecting snow depth change in avalanche path starting zones using uninhabited aerial systems and structure from motion photogrammetry Detecting snow depth change in avalanche path starting zones using uninhabited aerial systems and structure from motion photogrammetry
Understanding snow depth distribution and change is useful for avalanche forecasting and mitigation, runoff forecasting, and infrastructure planning. Advances in remote sensing are improving the ability to collect snow depth measurements. The development of structure from motion (SfM), a photogrammetry technique, combined with the use of uninhabited aerial systems (UASs) allows for high...
Authors
Erich H. Peitzsch, Daniel B. Fagre, Jordy Hendrikx, Karl W. Birkeland
Identifying major avalanche years from a regional tree-ring based avalanche chronology for the U.S. Northern Rocky Mountains Identifying major avalanche years from a regional tree-ring based avalanche chronology for the U.S. Northern Rocky Mountains
Avalanches not only pose a major hazard to people and infrastructure, but also act as an important ecological disturbance. In many mountainous regions in North America, including areas with existing transportation corridors, reliable and consistent avalanche records are sparse or non-existent. Thus, inferring long-term avalanche patterns and associated contributory climate and weather...
Authors
Erich H. Peitzsch, Daniel B. Fagre, Gregory T. Pederson, Jordy Hendrikx, Karl W. Birkeland, Daniel K. Stahle
Wetland stratigraphic evidence for variable megathrust earthquake rupture modes at the Cascadia subduction zone Wetland stratigraphic evidence for variable megathrust earthquake rupture modes at the Cascadia subduction zone
Although widespread agreement that the Cascadia subduction zone produces great earthquakes of magnitude 8 to 9 was reached decades ago, debate continues about the rupture lengths, magnitudes, and frequency of megathrust earthquakes recorded by wetland stratigraphy fringing Cascadia’s estuaries. Correlation of such coastal earthquake evidence along the subduction zone has largely relied...
Authors
Alan R. Nelson, Robert C. Witter, Simon Englehart, Andrea Hawkers, Benjamin P. Horton
Development of a domestic earthquake alert protocol combining the USGS pager and FEMA Hazus systems Development of a domestic earthquake alert protocol combining the USGS pager and FEMA Hazus systems
The U.S. Geological Survey’s PAGER automated alert system provides rapid (10-20 min) loss estimates in terms of ranges of fatalities and economic impact for all significant earthquakes around the globe. In contrast, FEMA’s Hazus software, which is currently operated manually by FEMA personnel internally within several hours of any large domestic earthquake, provides more detailed loss...
Authors
David J. Wald, H.A. Seligson, Jesse Rozelle, J. Burns, Kristin Marano, Kishor S. Jaiswal, Mike Hearne, D Bausch