碩士 / 國立臺灣海洋大學 / 海洋環境資訊學系 / 94 / Abstract
Sediment samples were obtained from 19 stations in the Tan-Shui river in three separate seasons (Summer, Fall and Winter) between June 2005 and March 2006. Size analysis using sieves and laser particle sizer were performed. Results showed that:
(1) Particle sizes measured did not vary consistently with
the station depth.
(2) At the station located outside the river mouth at the
depth of 6m in the ocean, the d50 was about 150 �慆 in
the fall and winter seasons.
(3) Size distributions at the stations near the river mouth
in the fall season and the nearby coastal gurard
stations in the summer and fall seasons were bi-modal.
(4) Several stations had marked seasonal variation in d50:
at coastal guard station d50 was 7�慆 in the summer,
125�慆 in the fall and 160�慆 in the winter; at the Ju-
Wei MRT station 141�慆 in the summer, 8�慆 in the fall
and 89�慆 in the winter; and at the Su-Ju-Tou pumping
station 4�慆 in the summer, 77�慆 in the fall and 27�慆
in the winter.
(5) Examining the total rainfall in the month prior to the
sampling, it was found that there were no clear trend
in the variation of d50 in the above three stations and
the rainfall.
(6) It was also found, regardless of the seansonal
variation, the upper, lower reaches and the river mouth
region were mostly sands while the middle reach mostly
mud.
| Identifer | oai:union.ndltd.org:TW/094NTOU5282010 |
| Date | January 2006 |
| Creators | SHENG-CHIN SU, 蘇勝欽 |
| Contributors | 蔡政翰 |
| Source Sets | National Digital Library of Theses and Dissertations in Taiwan |
| Language | zh-TW |
| Detected Language | English |
| Type | 學位論文 ; thesis |
| Format | 90 |
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