Integrated Photogrammetric and Geophysical Monitoring of Shoreline Instability in Littoral Cells in the Pacific Northwest, USA

by Charles L. Rosenfeld, Oregon State Univ, Corvallis, United States,
Curt D. Peterson, Oregon State Univ, Corvallis, United States,
Don J. Pettit, Oregon State Univ, Corvallis, United States,
Philip L. Jackson, Oregon State Univ, Corvallis, United States,
A. Jon Kimerling, Oregon State Univ, Corvallis, United States,



Document Type: Proceeding Paper

Part of: Coastal Sediments

Abstract: Several factors have recently focused on the attention of government agencies, academic researchers, and the general public on coastal erosion and beach resource management in the Pacific Northwest. These include: (1) increasing shoreline development, (2) dramatic and continuing shoreline changes following the 1982-83 El Nino - Southern Oscillation (ENSO) event, (3) potential long-term effects of shore protection structures, tectonic events, and (4) global sea level rise. To meet these challenges it requires efficient and accurate techniques to monitor the reservoirs of mobile sediment in this unique and highly dynamic coastal zone. A beach inventory system has been devised incorporating surveyed beach profiles, seismic refraction, geophysical surveys, and aerial photography to determine the total volume of sand reservoirs within littoral cells. These comprehensive inventories enable: (1) estimates of sand distribution and total static budgets for critically important coastal beaches, (2) the development of predictive models for interannual climatic forcing of regional shoreline erosion, and (3) regional maps of predicted shoreline response to both coastal vertical tectonics and potential, global sea level change.

Subject Headings: Shoreline | Photogrammetry | Sea water | Littoral drift | Sand (hydraulic) | Coastal management | Seismic surveys | Sandy soils | Inventories | North America | United States | Pacific Northwest

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