USGS Science in Support of Coastal Issues June 17, 2015 Suzette Kimball Acting Director U.S. Geological Survey
Coastal Marine Geology Program Past Regional Cooperative Studies Louisiana Barrier Islands South Carolina Coastal Erosion Southern Lake Michigan Coastal Erosion Lake Erie Coastal Erosion Florida Gulf of Mexico Wetlands West Central Florida Coastal Erosion Southwest Washington Coastal Erosion Hawaii Coastal Erosion North Carolina Coastal Erosion
Regional Cooperative Studies Today Fire Island Coastal Erosion DelMarVa Coastal Erosion Gulf of Mexico Barrier Island Evolution California Coastal Change Marine Transgression Erosion of Headland Source of Holocene Sediment ~160M cubic meters 10 km ~200M cubic meters eroded SW Sediment Flux Shoreline Position at 8000 years B.P. Outwash Headland Integration of Geologic and Shoreline Structure and Change Oceanographic Deployments Seafloor Mapping Comparison of modeled and observed sediment thickness change Modeling Long-term and hurricane-driven shoreline change Field Surveys
Building National Capacity to Anticipate and Respond to Coastal Change Hazards Geologic and Geomorphic Observations Models, Forecasts, and Assessments Observational Programs Delivery Mechanisms
Forecasting Storm Vulnerability Update generalized scenario for cat 1-4 hurricanes using post-Sandy beach conditions. Reduced beach elevations led to Increased vulnerability to coastal erosion during future storms. Pre-Sandy (2010) vulnerability 20% of Fire Island was likely to overwash Post-Sandy (2012) vulnerability 70% of Fire Island is likely to overwash EROSION EROSION OVERWASH OVERWASH INUNDATION INUNDATION
Ensuring Maximum Impact Coastal National Elevation (CoNED) Datasets Mapping California State Waters Predicted Mobility of Oil/Sand “Tarballs”
Multi-Faceted Research Capability Characterizing the Extended Continental Shelf (ECS)– beyond the Exclusive Economic Zone (EEZ) Joint effort, led by US Dept of State with NOAA and USGS conducting research cruises in Arctic, Pacific and Atlantic Oceans Objectives include mapping thickness of sediments , identifying geologic features and processes, assessing offshore hazards April 2015 track lines in North Atlantic
Coastal Change Hazards Portal