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Rate of Shoreline Changes for Barrier Islands in Nakdong Estuary  

Kim, Baeck-Oon (SERC, Kunsan National University)
Khim, Boo-Keun (Division of Earth Environmental System, Pusan National University)
Lee, Sang-Ryong (Division of Earth Environmental System, Pusan National University)
Publication Information
Journal of Korean Society of Coastal and Ocean Engineers / v.19, no.4, 2007 , pp. 361-374 More about this Journal
Abstract
This study presents long-term shoreline changes of barrier islands in Nakdong Estuary using aerial photographs. Digital photogrammetry is used for constructing mosaic aerial photographs, which yield six sets of shoreline data ranging from 1975 to 2001. Three kinds of rate of shoreline changes such as EPR (End Point Rate), JKR(Jackknife Rate) and LRR (Linear Regression Rate) are computed by a GIS-based Digital Shoreline Analysis Systems. There have been remarkable changes both in Sinja Island and Doyodeung. Western part of Sinja Island advanced seaward, whereas eastern part retreated landward, giving appearance that the island rotated counterclockwise. Rate of shoreline changes at both ends reach 20 m/yr. Doyodeung occurred newly in front of Baekhapdeung in 1993, resulting in shoreline advance in a rate of 40 m/yr. Rate of shoreline changes differ both within and between barrier islands and have a tendency to increase eastward. To understand this spatial variability of rate of shoreline changes, it is suggested to make a detailed investigation into the impact of coastal development on hydrodynamic and sedimentary processes.
Keywords
rate of shoreline change; aerial photograph; digital photogrammetry; Nakdong Estuary; barrier islands;
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Times Cited By KSCI : 4  (Citation Analysis)
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