A study on typhoons induced nearshore hydrodynamics along Kinmen coast

Wen-Son Chiang, Wei Shiun Lu, Gia Yun Chen, Jin-Li Yu

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

Coastal erosion along Liaolo Bay which is a semi-circular beach and locates at the south coast of Kinmen Island was observed during past years. Field and numerical experiments were conducted to discuss the hydrodynamics inside the bay. CMS-WAVE and CMS-FLOW models were setup and validated according to the collected field data. Then, the models were applied to simulate the hydrodynamics inside the study site during typhoon events. Longshore current pattern along the semi-cicular beach is sensitive to the incident wave. For wave approaching from east direction, the most affected region inside the bay by the wave locates on the west of the beach. However, widespread impact on the whole beach was found when the wave incident from south direction. Wave (1∼2 m) travels from E∼ESE direction at the bay mouth usually occurs in winter and induces to consistently westward lognshore current along the beach with speed 0.2∼0.4 m/s. High wave approached from SE∼S direction during the studied typhoon events which induced to strong transiently and complex current patterns inside the bay beach with maximum speed up to more than 1.0 m/s. A rip circulation cell constantly found near the outcrop, which enhanced the strength of the rip circulation. Besides, rip circulation cells occasionally found at some spots along the beach respectively which depends on the incident wave energy and direction.

Original languageEnglish
Title of host publicationProceedings of the 34th International Conference on Coastal Engineering, ICCE 2014
EditorsPatrick Lynett
PublisherAmerican Society of Civil Engineers (ASCE)
ISBN (Electronic)9780989661126
Publication statusPublished - 2014 Jan 1
Event34th International Conference on Coastal Engineering, ICCE 2014 - Seoul, Korea, Republic of
Duration: 2014 Jun 152014 Jun 20

Publication series

NameProceedings of the Coastal Engineering Conference
Volume2014-January
ISSN (Print)0161-3782

Other

Other34th International Conference on Coastal Engineering, ICCE 2014
CountryKorea, Republic of
CitySeoul
Period14-06-1514-06-20

All Science Journal Classification (ASJC) codes

  • Civil and Structural Engineering
  • Ocean Engineering
  • Oceanography

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