A5039621201- Aeolian processes and effects
- Fire effects on ecosystems
- Landslides and related hazards
- Soil erosion and sediment transport
- Hydrology and Watershed Management Studies
- Atmospheric and Environmental Gas Dynamics
- Climate change and permafrost
- Cryospheric studies and observations
- Hydrology and Sediment Transport Processes
- Geological formations and processes
Pacific Science Center
2023-2025
United States Geological Survey
2023-2025
Abstract Watershed sediment yield commonly increases after wildfire, often causing negative impacts to downstream infrastructure and water resources. Post‐fire erosion is important understand quantify because it increasingly placing supplies, habitat, communities, at risk as fire regimes intensify in a warming climate. However, measurements of post‐fire mobilization are lacking from many regions. We measured forested, heavily managed 25.4‐km 2 watershed the western Sierra Nevada, California,...
Global climate change creates geologic hazard cascades as the cryosphere experiences warming. The rapid retreat of Barry Glacier, a tidewater glacier in Prince William Sound, Alaska, has destabilized cliff walls adjacent to fjord, including large landslide, approximately 2-km-wide, 1-km-tall, and ∼500 Mm3 volume. Arm landslide was first identified 2019 but since been noted photographs dating back 1930s. Catastrophic failure potential generate tsunami with life-threatening waves...
Abstract In a warming climate, an intensifying fire regime and higher likelihood of extreme rain are expected to increase watershed sediment yield in many regions. Understanding regional variability landscape response post‐fire rainfall is essential for managing water resources infrastructure. We measured resulting from sequential wildfire flooding the upper Carmel River (116 km 2 ), on central California coast, USA, using changes volume mapped reservoir. determined that after was 854–1,100...
Abstract Fire facilitates erosion through changes in vegetation and soil, with major postfire commonly occurring even moderate rainfall. As climate warms, the western United States (U.S.) is experiencing an intensifying fire regime increasing frequency of extreme rain. We evaluated whether these hydroclimatic are evident patterns by modeling hillslope following all wildfires larger than 100 km 2 California from 1984 to 2021. Our results show that annual statewide has increased significantly...
Abstract River profiles are shaped by climatic and tectonic history, lithology, internal feedbacks between flow hydraulics, sediment transport erosion. In steep channels, waterfalls may self‐form without changes in external forcing (i.e., autogenic formation) erode at rates faster or slower than an equivalent channel waterfalls. We use a 1‐D numerical model to investigate how self‐formed alter the morphology of bedrock river longitudinal profiles. modify standard stream power include slope...