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Please use this identifier to cite or link to this item: http://ntour.ntou.edu.tw:8080/ir/handle/987654321/51956

Title: Morphological characteristics of tidal inlets subject to a shore term typhoon event: a case study in Lanyan river estuary
Authors: Hsing-Yu Wang
Hui-Ming Fang
Sung-Shan Hsiao
Contributors: 國立臺灣海洋大學:河海工程學系
Keywords: sediment transport
topographic change
estuary
Date: 2018-06
Issue Date: 2019-01-09T08:32:44Z
Publisher: Journal of Marine Science and Technology
Abstract: Abstract: This study aims to investigate different sediment particle sizes
subject to transport characteristics of bed-load and suspendedload caused by nonlinear interactions of wave-tide-river in a
tidal-estuary. A two-dimensional hydrodynamic coupling to a
morphological model is developed to study this issue. A case
study of Lanyang River estuary in Taiwan is applied and analyzed. The models are verified against field data (i.e., hydrodynamics and morphological change) collected from Lanyang
River estuary during the invasion of typhoon Saola in July, 2012.
Fairly good agreements are given comparing to field data. In
general, the simulation indicates that suspended load could be
transported toward offshore up to water depth of an order of approximately 10-15 m); it is not a major factor to affect morphological changes. The bed-load transport driven by the flood
due to typhoon event is proven to be a major contribution to
topographic changes in estuary. The presented results found
that the erosion and siltation are both observed in the alongshore regions. In the estuary siltation of approximately 3-4 m
on the north and south sides of the estuary and erosion of approximately 2-3 m are found respectively.
Relation: 26(4) pp.552-561
URI: http://ntour.ntou.edu.tw:8080/ir/handle/987654321/51956
Appears in Collections:[河海工程學系] 期刊論文

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