02047nas a2200193   4500008004100000050004000041245009600081210006900177300001400246490000700260520142000267653002201687653001201709653001201721100002101733700001901754700002501773856005501798       2002                        eng d  aOSU Libraries: Guin QH541.5.C65 J6100aAn application of LIDAR to analyses of El Nino erosion in the Netarts Llttoral cell, Oregon0 aapplication of LIDAR to analyses of El Nino erosion in the Netar  ap.792-8010 v183 aEl Nino produces coastal and beach erosion along the West Coast of the USA by elevating mean water levels so that tides are significantly higher than predicted, and by altering the paths of storms that generate large waves. In the past it has been difficult to adequately document the erosion impacts since they are so widespread. This difficulty has been solved through the application of LIDAR, which uses a scanning laser mounted in a small aircraft to rapidly and accurately survey beach elevations. This study uses LIDAR to document the beach changes and shoreline erosion that occurred during the 1997-98 El Nino within the Netarts Littoral Cell on the Oregon coast, a 14-km long "pocket beach" between large rocky headlands. The LIDAR surveys demonstrate that sand generally migrated northward within the cell due to the southwest approach of the El Nino storm waves, but there was a complex pattern of beach-elevation change due to the superposition of eroded rip-current embayments. The greatest beach erosion occurred near the south end of the cell, where it impacted Cape Lookout State Park, and to the north of the inlet to Netarts Bay where it threatened The Capes, a development of condominiums located on a high bluff. In both cases the LIDAR data proved to be extremely useful in quantifying the erosion, and in providing a better understanding of the erosion processes that occur during an El Nino.10acoastal processes10aerosion10ageology1 aRevell, David, L1 aKomar, Paul, D1 aSallenger, Asbury, H  uhttps://netarts.library.oregonstate.edu/node/13756