The Sediments Transport of the Estuary and Coastal Area Which in the Surfzone

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基本資料

Project title

Code/計畫編號

MOST104-2625-M019-004

Translated Name/計畫中文名

全流域河川與海岸漂砂機制及地形變遷之研究-總計畫暨子計畫:碎波帶內河口海岸漂砂機制之研究(I)

Project Coordinator/計畫主持人

Sung-Shan Hsiao

Funding Organization/主管機關

National Science and Technology Council

Co-Investigator(s)/共同執行人

林柏青

Department/Unit

Department of Harbor and River Engineering

Website

https://www.grb.gov.tw/search/planDetail?id=11482099

Year

2015

Start date/計畫起

01-08-2015

Expected Completion/計畫迄

01-07-2016

Bugetid/研究經費

1273千元

ResearchField/研究領域

防災工程
土木水利工程
水土資源保育

一般研究海岸地形變遷大抵係利用現場實測資料統計分析、水工模型試驗及數值模式推算等方法。其中，水工模型試驗乃利用實體與模型間幾何相似原理，雖能呈現現場水理現象，但因模型製作成本較高，且動床模型相似率難以符合實際海域之複雜水理現象，故無法廣泛應用；而利用數值方法進行數值模擬，雖可針對解析問題快速獲得所需結果，但為求得較符合實際現況暨模式之適用性探討，仍須仰賴現場實測資料之蒐集。本研究為使碎波帶內之觀測資料可具有代表性，亦將現場觀測資料等營力化，以改良原使用於量測潮汐運動的水流分佈特性之漂流浮標，作為較不受碎波帶內複雜狀況之近岸流場浮標系統。亦考量使觀測區域內「面」的代表意義暨特性可被有效提出，遂研擬以光學攝影機作為工具之觀測方法。嗣後配合現場觀測所得之海象資料，做為所使用模式之校驗及回饋，可在人力經費有限無法且長期觀測之情況下，彌補現場觀測頻度較不足之空窗期。計畫成果作為日後相關營力參數與海岸地形變遷模式等參酌，亦可提供予海岸防護機關經濟部水利署、環保署、防災單位災害防救中心與地方縣市政府等相關單位作為經營管理與近海環境觀測網建置之參酌。 General research Coastal terrain change is roughly the use of field measurement data analysis, hydraulic model test and numerical model estimation and other methods. However, because the cost of model making is relatively high, and the similarity ratio of moving bed model is not consistent with the actual water area of the phenomenon of water management. Numerical simulation is needed to obtain the required results quickly. However, in order to obtain the actual situation and applicability of the model, we need to collect the field data. In order to make the observation data in the surf zone, this study uses the observation data to improve the original drift buoy, which is used to measure the tidal movement, as the buoy system. It is also contemplated to use an optical camera as a tool for observation. In the case of limited human resources and funds, it can make up for the lack of on-site observation frequency. The results of this study can be used as the parameters of the coastal camp, as well as coastal terrain change model reference. Not only be provided to the relevant government units, but also be management and the establishment of marine environmental observation network to use.

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The Sediments Transport of the Estuary and Coastal Area Which in the Surfzone

基本資料

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