Abstract
Resonance may occur when the periods of incoming waves are close to the eigen-periods of harbor basin. The amplified waves by resonance in harbor will induce serious wave hazards to harbor structures and vehicles in it. Through traditional theoretical approaches, the eigen-periods of harbor basin with regular shapes can be obtained. In our study, we proposed a numerical model to simulate the behavior characteristics of the harbor waves. A finite difference numerical model based on the shallow water equations (SWE) is developed to simulate incoming tsunami and tidal waves. By analyzing the time series data of water surface wave amplitude variations at selected synthetic observation locations, we estimate the wave height and arrival time in coastal area. Furthermore, we use frequency spectrum analysis to investigate the natural frequencies from the data recorded at the synthetic observation stations.
Original language | English (US) |
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Pages (from-to) | 1554-1564 |
Number of pages | 11 |
Journal | Science China Earth Sciences |
Volume | 55 |
Issue number | 9 |
DOIs | |
State | Published - Sep 2012 |
Bibliographical note
Funding Information:We thank Prof. Kwang Ik Kim for providing high precision bathymetry data of Pohang New Harbor and fruitful advices on this study. Careful reading of the manuscript and constructive comments by anonymous reviewers were very valuable for revision of the paper. This work was supported by the National Natural Science Foundation of China (Grant Nos. 40574012 and 40676039), National Basic Research Program of China (Grant No. 2008CB425701), National High-tech R& D Program of China (Grant No. 2010AA012402) and K. C. Wong Magna Fund in Ningbo University.
Keywords
- frequency spectrum analysis
- harbor
- numerical simulation
- wave hazard