HR: 09:45h
AN: NG31A-08    [Abstracts]
TI: Annual shoreline change between 2006 and 2007 of the Outer Banks, North Carolina
AU: * Tebbens, S F
EM: sarah.tebbens@wright.edu
AF: Wright State University, 3640 Colonel Glenn Hwy, Dayton, OH 45435, United States
AU: Barton, C C
EM: chris.barton@wright.edu
AF: Wright State University, 3640 Colonel Glenn Hwy, Dayton, OH 45435, United States
AU: Burroughs, S M
EM: sburroughs@ut.edu
AF: University of Tampa, 401 W Kennedy Blvd, Tampa, FL 33606, United States
AU: Smigelski, J
EM: smigelski.3@wright.edu
AF: Wright State University, 3640 Colonel Glenn Hwy, Dayton, OH 45435, United States
AU: Murray, A
EM: abmurray@duke.edu
AF: Duke University, Nicholas School of the Environment and Earth Sciences, Box 90328, Durham, NC 27708, United States
AU: Ashton, A
EM: aashton@whoi.edu
AF: Woods Hole Oceanographic Institution, Clark 257, MS#22, Woods Hole, MA 02543, United States
AU: Lazarus, E
EM: eli.lazarus@duke.edu
AF: Duke University, Nicholas School of the Environment and Earth Sciences, Box 90328, Durham, NC 27708, United States
AB: Shorelines undergo continuous change, primarily in response to the action of waves. New technologies are enabling researchers to measure shoreline behaviors over a range of spatial and temporal scales. In June 2006 and June 2007, repeat NSF-funded LIDAR surveys were collected along a 175 km stretch of the Atlantic coast of the Outer Banks, North Carolina, United States by the National Center for Airborne Laser Mapping (NCALM). Analysis of annual shoreline position change determined from these new surveys will be presented. Our analysis of past annual surveys of the Outer Banks has documented nonlinear patterns in shoreline position change and strong correlations with preexisting beach width and annual dune retreat. Our work also documented spatial variability, where different regions of the Outer Banks exhibit different patterns of coastal change during the same time interval. The different regions have different shoreline orientations which correspond to different effective wave climates. The shoreline orientation has been shown to successfully model the spatial variations in observed shoreline change. The new 2006 and 2007 LIDAR surveys, combined with annual change determined from analysis of previous surveys of the same coastline segments collected by NASA in 1997, 1998, 1999, and 2000, will allow the analysis of patterns of shoreline change over time intervals ranging from one to ten years.
DE: 4217 Coastal processes
DE: 4400 NONLINEAR GEOPHYSICS (3200, 6944, 7839)
DE: 9350 North America
SC: Nonlinear Geophysics [NG]
MN: 2007 Fall Meeting