동해의 이상파랑 수치 시뮬레이션

Title
동해의 이상파랑 수치 시뮬레이션
Alternative Title
Numerical Simulation of Abnormal High Wave on the East Sea
Author(s)
김경옥; 이한수; 최병호
KIOST Author(s)
Kim, Kyeong Ok(김경옥)
Publication Year
2009-05-28
Abstract
The East Sea is under the direct influences of the East Asian winter monsoon and rough wave conditions are normally observed along the coasts of the East Sea in wintertime together with high storm waves during the passage of typhoons. In February 2008, abnormal high waves were generated and propagated to Korea and Japan coast in the East Sea due to a quasi-stationary strong atmospheric low pressure near Hokkaido, Japan. Large damages to coastal structure and harbor were reported along the east coast of Korea and Sado Island and Toyama Prefecture, Japan. The objectives of this study are to investigate the generation mechanism of abnormal high swell waves in the East Sea in wintertime and to simulate such an abnormal meteorological condition and wave field using a mesoscale atmospheric model (MM5) and the third generation wind wave models (WW3 and SWAN) with modification of wave energy sink term.The observed and simulated significant wave height and period at Fushiki Toyama, Wajima in Japan and at Anmok in Korea are compared. During the simulations of wave field with WW3 and SWAN, it was found that the wave energy sink term by whitecapping in lower frequency (0.05~0.19 Hz) in SWAN is overestimated. In wave field simulation of SWAN, two counter-measures can be taken as suggested by Roger et al., (2003); 1) by considering a whitecapping sink term for arbitrary water depth (Donelan and Yuan, 1994) with tunable parameters and 2) by suggesting new criteria to distinguish swell and reduce the swell energy dissipation.
URI
https://sciwatch.kiost.ac.kr/handle/2020.kiost/29519
Bibliographic Citation
2009년도 한국해양과학기술협의회 공동학술대회 논문집, pp.2123 - 2126, 2009
Publisher
한국해양과학기술협의회
Type
Conference
Language
English
Publisher
한국해양과학기술협의회
Related Researcher
Research Interests

Coastal Engineering,Marine Environment Model,Coastal Disaster Model,해안공학,해양환경모델링,해안재해모델

Files in This Item:
There are no files associated with this item.

qrcode

Items in ScienceWatch@KIOST are protected by copyright, with all rights reserved, unless otherwise indicated.

Browse