期刊
PHOTOGRAMMETRIC ENGINEERING AND REMOTE SENSING
卷 76, 期 4, 页码 421-427出版社
AMER SOC PHOTOGRAMMETRY
DOI: 10.14358/PERS.76.4.421
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资金
- Southern California Beach Processes Study
- California SeaGrant [R/OE-39]
- Coastal Environmental Quality Initiative (CEQI) [04-T-CEQI-06-0046]
- University of California, San Diego Chancellor's Interdisciplinary Collaboratories Fund
Seacliff changes evaluated using both terrestrial and airborne lidar are compared along a 400 m length of coast in Del Mar, California. The many large slides occurring during the rainy, six-month study period (September 2004 to April 2005) were captured by both systems, and the alongshore variation of cliff face volume changes estimated with the airborne and terrestrial systems are strongly correlated (r(2) = 0.95). However, relatively small changes in the cliff face are reliably detected only with the more accurate terrestrial lidar, and the total eroded volume estimated with the terrestrial system was 30 percent larger than the corresponding airborne estimate. Although relatively small cliff changes are not detected, the airborne system can rapidly survey long cliff lengths and provides coverage on the cliff top and beach at the cliff base.
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