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http://dx.doi.org/10.7837/kosomes.2016.22.5.527

Predicting Long-Term Shoreline Change Due to the Construction of Submerged Breakwaters in Manseongri Beach  

Park, Il Heum (School of Marine Technology, Chonnam National University)
Kang, Seong Wuk (School of Marine Technology, Chonnam National University)
Kang, Tae-Soon (GeoSystem Research Corporation)
Publication Information
Journal of the Korean Society of Marine Environment & Safety / v.22, no.5, 2016 , pp. 527-535 More about this Journal
Abstract
The Manseongri Coast meets the sea on the southeast and is composed of coarse sediment as a mesotidal beach. The waves that strike the beach are stronger than the tides or tidal currents as external forces of beach deformation. Storm waves frequently reach significant wave heights of 2-3m and hit in spring and summer, leaving the sea calm during fall and winter. Incident waves reach remarkable heights that correspond with observed shoreline changes. The shoreline erodes in spring and summer due to these strong waves but recovers in fall and winter as a result of the more moderate waves. On the basis of these observed results, a numerical calibration for experiments on shoreline change was established. Results revealed that according to hindcast data, calculated shoreline changes agreed with the observed shoreline, with a minimum RMS error of 1.26m with calibration parameters $C_1=0.2$ and $C_2=1C_1$. Using these calibration parameters, long-term shoreline change was predicted after the construction of submerged breakwaters and jetties, etc. The numerical model showed that the shoreline would move forward by 5-15m behind the submerged breakwaters and recede by 5-15m north of the structure.
Keywords
Shoreline change; Waves; Submerged breakwaters; Coarse sediment; Manseongri Beach;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
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