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|Title: ||Evaluations on coastal topographical changes at Hualien Coast, Taiwan|
|Authors: ||Tai-Wen Hsu;Shan-Hwei Ou;Shiaw-Yih Tzang|
|Contributors: ||NTOU:Department of Harbor and River Engineering|
|Issue Date: ||2011-10-20T08:13:55Z
|Publisher: ||Journal of Coastal Research|
|Abstract: ||abstract:Coastal topographical changes at Hualien Coast, downdrift of Port of Hualien, Taiwan, after the construction of an extended breakwater are closely evaluated based on the results from continuous field survey data, a statistical 2-D empirical eigenfunction model, and a numerical hydrodynamic model for nearshore current fields. Firstly, the analysis from field survey data verifies the significant impacts on shoreline changes due to the installation of an extended breakwater. The 2-D empirical eigenfunction model is then applied to forecast beach profile changes at the coastal areas assuming no breakwater installation. Comparisons with surveyed beach profilessuccessfully illustrate that the breakwater installation is responsible for giving rise to accreting northern beaches while eroding southern beaches.The numerical result further points out that the extended breakwater induces an extra clockwise circulation cell in harbor's lee marine area and it transports sediment towards the harbor in shallower water Altogether, clear identifications on the effects of the breakwater installation suggest that detailed and reliable evaluations on the coastal topographical changes can be achieved through adoption of the present schemes.|
|Relation: ||16(3), pp.790-799|
|Appears in Collections:||[河海工程學系] 期刊論文|
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