서해안 이상파랑의 발생 및 증폭 기구 분석Analysis of Generation and Amplification Mechanism of Abnormal Waves Occurred along the West Coast of Korea
- Other Titles
- Analysis of Generation and Amplification Mechanism of Abnormal Waves Occurred along the West Coast of Korea
- Authors
- 윤성범; 신충훈; 배재석
- Issue Date
- Oct-2014
- Publisher
- 한국해안,해양공학회
- Keywords
- 이상파랑; 압력 점프; 천수방정식; Boussinesq 방정식; 수치모의; abnormal waves; pressure jump; shallow water equation; Boussinesq equation; numerical simulation
- Citation
- 한국해안·해양공학회논문집, v.26, no.5, pp 314 - 326
- Pages
- 13
- Indexed
- KCI
- Journal Title
- 한국해안·해양공학회논문집
- Volume
- 26
- Number
- 5
- Start Page
- 314
- End Page
- 326
- URI
- https://scholarworks.bwise.kr/erica/handle/2021.sw.erica/24556
- DOI
- 10.9765/KSCOE.2014.26.5.314
- ISSN
- 1976-8192
- Abstract
- 2007년 3월 31일 서해안에서 발생했던 이상파랑의 발생원인 및 증폭과정을 이해하기 위해 관측자료 분석과 선형 천수방정식 및 선형 Boussinesq 모형을 이용한 1차원 수치모형 실험을 수행하였다. 기존의 연구에서 제안된 여러 형태의 압력점프에 대해 검토한 결과 기존의 압력점프는 관측된 이상파랑의 특성을 제대로 재현할 수 없었다. 본 연구에서는 새로운 형태의 압력점프를 제안하였다. 본 연구에서 제안한 압력점프의 타당성을 검토하기 위한 수치모의를 수행한 결과, 계산된 이상파랑의 주기와 최대 수면고가 관측치와 상당히 일치함을 보여주었다.
On 31 March 2007, the abnormal wave occurred along the western coast of Korea. In order to investigate the generation mechanism of abnormal waves and to understand the amplification process of the abnormal waves, the observed data were analyzed and one-dimensional numerical model experiments were performed by using both the linear shallow water equation and the linear Boussinesq equation models. Various types of pressure jump for the abnormal waves previously proposed by other researchers were reviewed. As a result, it was not possible to reproduce the abnormal waves from the previously proposed pressure jumps. In this study, we proposed a new form of pressure jump, and numerical simulations were performed in order to check the validity of the proposed pressure jump. The numerical results showed that the calculated period of abnormal waves and the maximum water elevations agreed reasonably well with those of the observations.
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