| Home | E-Submission | Sitemap | Contact Us |  
Journal of Korean Society of Coastal and Ocean Engineers > Volume 32(6); 2020 > Article
J Korean Soc Coast Ocean Eng 2020;32(6): 446-457. doi: https://doi.org/10.9765/KSCOE.2020.32.6.446
폭풍파랑에 따른 해빈과 호형 사주 지형변화 현장 관측 및 XBeach 모델 민감도 분석
진혁1, 도기덕2, 장성열3, 김인호4
1한국해양대학교 해양과학기술융합학과 석사과정
2한국해양대학교 해양공학과 조교수
3해연기술 기술연구소 이사
4강원대학교 지구시스템공학과 교수
Field Observation of Morphological Response to Storm Waves and Sensitivity Analysis of XBeach Model at Beach and Crescentic Bar
Hyeok Jin1, Kideok Do2, Sungyeol Chang3, In Ho Kim4
1Master Course, Dept. of Convergence study on the Ocean Science and Technology, Korea Maritime and Ocean University
2Assistant Professor, Dept. of Ocean Engineering, Korea Maritime and Ocean University
3Director, Haeyeon Engineering and Consultants Corp
4Professor, Dept. of Earth and Environmenal Engineering, Kangwon National University,346 Jungang-ro, Samcheok-si, Gangwon-do 25913, Korea
Corresponding author: In Ho Kim ,Tel: +82-33-570-6571, Email: kimih@kangwon.ac.kr
Received: November 17, 2020;  Revised: December 8, 2020.  Accepted: December 8, 2020.
Share :  
ABSTRACT
Crescentic sand bar in the coastal zone of eastern Korea is a common morphological feature and the rhythmic patterns exist constantly except for high wave energy events. However, four consecutive typhoons that directly and indirectly affected the East Sea of Korea from September to October in 2019 impacted the formation of longshore uniform sand bar and overall shoreline retreats (approx. 2 m) although repetitive erosion and accretion patterns exist near the shoreline. Widely used XBeach to predict storm erosions in the beach is utilized to investigate the morphological response to a series of storms and each storm impact (NE-E wave incidence). Several calibration processes for improved XBeach modeling are conducted by recently reported calibration methods and the optimal calibration set obtained is applied to the numerical simulation. Using observed wave, tide, and pre & post-storm bathymetries data with optimal calibration set for XBeach input, XBeach successfully reproduces erosion and accretion patterns near MSL (BSS = 0.77 (Erosion profile), 0.87 (Accretion profile)) and observed the formation of the longshore uniform sandbar. As a result of analysis of simulated total sediment transport vectors and bed level changes at each storm peak Hs, the incident wave direction contributes considerable impact to the behavior of crescentic sandbar. Moreover, not only the wave height but also storm duration affects the magnitude of the sediment transport. However, model results suggest that additional calibration processes are needed to predict the exact crest position of bar and bed level changes across the inner surfzone.
Keywords: storm erosion, crescentic sandbar, numerical simulation, longshore uniform bar
TOOLS
PDF Links  PDF Links
Full text via DOI  Full text via DOI
Download Citation  Download Citation
  E-Mail
Share:      
METRICS
0
Crossref
78
View
8
Download
Editorial Office
Korean Society of Coastal and Ocean Engineers,
#1132, LG EClat, 71 Banpo-daero 14-gil, Seocho, Seoul, Korea
Tel: +82-2-3474-1934,   Fax: +82-2-3473-1934   E-mail : cocean@kscoe.or.kr
Copyright© Korean Society of Coastal and Ocean Engineers. All rights reserved.       powerd by M2community
About |  Browse Articles |  Current Issue |  For Authors and Reviewers