Haeundae Beach in Korea: Seasonal-to-decadal wave statistics and impulsive beach responses to typhoons SCIE SCOPUS KCI

Cited 5 time in WEB OF SCIENCE Cited 4 time in Scopus
Title
Haeundae Beach in Korea: Seasonal-to-decadal wave statistics and impulsive beach responses to typhoons
Author(s)
Lee, Hee Jun; Do, Jong-Dae; Kim, Sun Sin; Park, Won-Kyung; Jun, Kicheon
KIOST Author(s)
Lee, Hee Jun(이희준)Do, Jong Dae(도종대)Jun, Kicheon(전기천)
Publication Year
2016-12
Abstract
Haeundae Beach represents Korean pocket beaches that are currently erosional and dominated by summertime typhoons. The decadal wave characteristics 9 km offshore of Haeundae Beach were analyzed using the WAM model that was validated through the 2007 wave observations. The wave statistics modelled for 1979-2007 indicates that the seasonal mean significant wave height (H (s) ) is highest (0.6-0.7 m) in summer due to typhoons, in contrast to the lowest (around 0.5 m) autumn analog. The wave direction is also pronouncedly seasonal with the principal bearings of SSW and NE in the summer and winter seasons, respectively. The WAM results additionally show that the H (s) has gradually increased over the region of Haeundae Beach since 1993. Beach profiling during June-November 2014 shows the opposite processes of the typhoon and fair-weather on beach sands. During a typhoon, foreshore sands were eroded and then accumulated as sand bars on the surf zone. In the subsequent fair-weather, the sand bars moved back to the beach resulting in the surf-zone erosion and foreshore accretion. A total of 5 cycles of these beach-wide sand movements yielded a net retreat (up to 20 m) of the shoreline associated with large foreshore erosion. However, the surf zone only slightly accumulated as a result of the sand cycles. This was attributed to the sand escape offshore from the westernmost tip of the beach. The present study may provide an important clue to understanding the erosional processes in Haeundae Beach.
ISSN
1738-5261
URI
https://sciwatch.kiost.ac.kr/handle/2020.kiost/2146
DOI
10.1007/s12601-016-0053-5
Bibliographic Citation
OCEAN SCIENCE JOURNAL, v.51, no.4, pp.681 - 694, 2016
Publisher
KOREA OCEAN RESEARCH DEVELOPMENT INST
Subject
RIP CURRENT; VARIABILITY; SYSTEM
Keywords
beach process; wave; typhoon; bathymetric profiling; WAM modelling; Haeundae
Type
Article
Language
English
Document Type
Article
Publisher
KOREA OCEAN RESEARCH DEVELOPMENT INST
Related Researcher
Research Interests

Marine meteorology,Wave modeling,Storm surge,해양기상,파랑모델링,폭풍해일

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