Browse > Article

Accuracy Evaluation of Dispersion-Correction Finite Difference Model for Tsunami Propagation  

윤성범 (한양대학교 토목·환경공학과)
임채호 (한양대학교 토목·환경공학과)
조용식 (한양대학교 토목공학과)
최철순 (한국전력기술(주) 토목건축기술처)
Publication Information
Journal of Korean Society of Coastal and Ocean Engineers / v.14, no.2, 2002 , pp. 116-127 More about this Journal
Abstract
Most of finite difference numerical models for the simulation of tsunami propagation developed so for are based on the shallow-water equations which are frequently solved by the leap-frog scheme. If the grid size is properly selected, this numerical scheme gives a correct dispersion effect fur constant water depth. However, if the water depth changes, the dispersion effect of tsunamis can not be accurately considered at every grid point in the whole computational domain. In this study we improved the existing two-dimensional dispersion-correction finite difference numerical scheme. The present scheme satisfies the local dispersion relationships of tsunamis propagating over a slowly varying topography while using uniform grid size and time step. To verify the applicability of the improved numerical model, a tsunami due to 1983 East Sea central earthquake is simulated for Korean harbors with the tide gage records such as Sokcho, Mukho, Pohang and Ulsan in the East Sea. Numerical results of the 1983 tsunami are compared with the measured data and the accuracy of the present numerical model is evaluated.
Keywords
tsunamis; dispersion effects; 2-D numerical model; slowly varying topography;
Citations & Related Records
Times Cited By KSCI : 3  (Citation Analysis)
연도 인용수 순위
1 A source model of the 1983 Nihnkai-earthquake tsunami /
[ Aida, I. ] / Proc. Symp. Nihonkai Chubu Earthquake Tsunami
2 Numerical simulation of the transoceanic Propapgation of tsunamis /
[ Imamura, F.;Shuto, N.;Goto, C. ] / Proc. of 6th. Congress Asia and Pacific Regional Division
3 Numerical simulation of a distant small-scale tsunami /
[ Yoon, S.B.;Liu, P.L.-F. ] / Recent Advances in Marine Science and Technology;PACON92, Pacific Congress on Marine Science & Technology
4 1992년 니카라구아 쓰나미의 범람 산정 /
[ 최병호;정홍화 ] / 한국해안 해양공학회지   과학기술학회마을
5 Numerical Simulations of Tsunami Propagation and Run-up /
[ Cho, Y.-S. ] / Ph. D. Thesis
6 Numerical simulation of tsunami propagations and run-up /
[ Goto, C.;Shuto, N.;Iida(ed.);Iwasaki(ed.) ] / Tsunami-Their Science and Engineering
7 지진해일 전파 유한차분 수치모형의 격자접속기법 /
[ 윤성범;권세영 ] / 대한토목학회논문집   과학기술학회마을
8 동해안에서의 쯔나미 위험도 평가 /
[ 이호준 ] / NIDP-98-06, 연구보고서
9 1983년 동해 쓰나미의 산정 /
[ 최병호;이호준 ] / 대한토목학회논문집
10 완변수심상 진진해일 전파수치모형의 일방향 분산보정 /
[ 윤성범;김진훈;이종인 ] / 대한토목학회논문집   과학기술학회마을
11 Tsunamis in the Japan Sea with Numerical Calculation /
[ Tsuji, Y.;KonishiI, T. ] / Research Report, No. 35
12 1994년 필리핀 민도로스섬의 쓰나미산정 /
[ 최병호;김덕구;노상준;이호준 ] / 한국해안 해양공학회지   과학기술학회마을
13 Numerical modeling of free-surface flows that are two-dimensional in plan /
[ Abbott, M.B.;McCowan, A.D.;Warren, I.R.;Fischer, H.B.(ed.) ] / Transport Models for Inland and Coastal Waters
14 The displacement fields of inclined faults /
[ Mansinha, L.;Smylie, D.E. ] / Bull. Seismol. Soc. Amer.
15 Numerical simulations of the 1960 Chilean tsunami propagation and inundation at Hilo, Hawaii: Progress in Prediction /
[ Liu, P.L-F.;Cho, Y.-S.;Yoon, S.B.,Seo, S.N.;Tsuchiya(ed.);Shuto(ed.) ] / Disaster Prevention and Warning
16 A modified leap-frog scheme for linear shallow-water equations /
[ Cho, Y.-S.;Yoon, S.B. ] / Coastal Engineering Journal   DOI
17 완변수심상 지진해일 전파 2차원 유한차분모형의 분산보정 /
[ 윤성범 ] / 대한토목학회논문집   과학기술학회마을
18 /
[ Tannehill, J.H.;Anderson, D.A.;Pletcher, R.H. ] / Computational Fluid Mechanics and Heat Transfer(2nd ed.)