Estimation of longshore sediment transport using video monitoring shoreline data SCIE SCOPUS

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Title
Estimation of longshore sediment transport using video monitoring shoreline data
Author(s)
Oh, Jung-Eun; Chang, Yeon S.; Jeong, Weon Mu; Kim, Ki Hyun; Ryu, Kyong Ho
KIOST Author(s)
Oh, Jung Eun(오정은)Chang, Yeon S.(장연식)Jeong, Weon Mu(정원무)Ryu, Kyong Ho(류경호)
Publication Year
2020-08
Abstract
Video monitoring systems (VMS) have been used for beach status observation but are not effective for examining detailed beach processes as they only measure changes to the shoreline and backshore. Here, we extracted longshore sediment transport (LST) from VMS in order to investigate long- and short-term littoral processes on a pocket beach. LST estimated by applying one-line theory, wave power, and the oblique angle of incident waves were used to understand shoreline changes caused by severe winter storms. The estimated LST showed good agreement with the shoreline changes because the sediments were trapped at one end of the pocket beach and the alongshore direction of transported sediments was corresponded to the direction of LST. The results also showed that the beach that was severely eroded during storms was also rapidly recovered following the evolution of LST, which indicates that the LST may play a role in the recovery process while the erosion was mainly caused by the cross-shore transport due to storm waves. After the beach was nourished, beach changes became more active, even under lower wave energy conditions, owing to the equilibrium process. The analysis presented in this study could be applied to study inhomogeneous beach processes at other sites. © 2020 by the authors.
ISSN
2077-1312
URI
https://sciwatch.kiost.ac.kr/handle/2020.kiost/38591
DOI
10.3390/JMSE8080572
Bibliographic Citation
Journal of Marine Science and Engineering, v.8, no.8, 2020
Publisher
MDPI AG
Keywords
Beach nourishment; Beach response; Longshore sediment transport; Storm waves; Video monitoring system
Type
Article
Language
English
Document Type
Article
Publisher
MDPI AG
Related Researcher
Research Interests

Coastal hydrodynamics,Coastal erosion,Turbulence model,연안수리역학,연안침식,난류모델

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