碩士 / 國立中央大學 / 土木工程學系 / 102 / This research analyzes the chronological data of Tamsui River's estuary, it also explores the influence cast on sediment transport and drainage by the construction of Taipei Harbor. The research result shows that the phenomenon of gradual sediment appears in the landscape change of the sand spit in Waziwei and in the sections of the river month. In addition, the beachline in the sand-spit area changes annually and continues to extend upstream and expand outward. From T00 to T10A, there shows a trend of sediment. Between T00 to T05, there are a highly varying condition and the overall sediment, and there is also erosion in some areas. Main channels' locations move every year and the channels' depth varies. Between T06 to T10A, the trend of sediment also appears. The main channels' location and depth are steadier. The sand at the estuary is mostly medium sand. The sand particle is thinner on the left bank within the estuary. This area is the ecological reserve containing high mud content. The grain size of the sand on the right bank is coarser. Tamsui Ferry Pier is located at the main channel. On the riverbed, the range wherein the medium sand gathers matches the area wherein underwater sand dunes mainly spread. The largest sand dune on the riverbed is located at the estuary; its height is about 1 m and its length is about 25-70 m. This research proves that the sand source is from upper reaches of Tamsui River, the shoal waters by the breakwater near the north side of Taipei Harbor erode the shore year by year, and the beachline expands outward to the ocean with sediments.
| Identifer | oai:union.ndltd.org:TW/102NCU05015121 |
| Date | January 2014 |
| Creators | Pei-rong Chen, 陳沛蓉 |
| Contributors | Hsien-ter Chou, 周憲德 |
| Source Sets | National Digital Library of Theses and Dissertations in Taiwan |
| Language | zh-TW |
| Detected Language | English |
| Type | 學位論文 ; thesis |
| Format | 80 |
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