碩士 / 國立臺灣海洋大學 / 應用地球科學研究所 / 99 / This study focuses on applying the color reflectance method to the sediment studies of the South China Sea (SCS), as dynamics changes of terrestrial sediments transported from the Pearl River and Kao-Ping River in the northern SCS, and from the Sunda Shelf in the southern with changes in the organic matters supplied from the land and sea. As different sources of input of terrestrial sediments, this study suggests that regional empirical equations would be suitable for estimating biogenic contents, instead of a basin-wide equation for the SCS. To avoid water content affect, this study uses only dry grounded-powder samples for color measurements. A spectrometer was used to measure the raw color spectra, and those data can be further analyzed through first-derivative, factor analysis and best subset regression before estimating the sediment biogenic contents. For the northern/southern SCS, a calibration dataset is compiled from cores MD972148 (19.81°N, 117.55°E)/MD972142 (12.72°N, 119.48°E) and MD012394 (13.80°N, 110.18°E). Our results show that downcore estimations appear to be successful. Furthermore, a control experiment was designed for testing quantitatively how CaCO3 (carbonate) influence color reflectance changes. The experiment, however, indicates the color changes in SCS sediments are very complicated. We conclude that a systematic lab approach [i.e. testing color changes by TOC (total organic carbonate), opal, clay minerals, etc] is needed to identifying major factors that driving color changes by applying empirical downcore equations to lab samples.
| Identifer | oai:union.ndltd.org:TW/099NTOU5135003 |
| Date | January 2011 |
| Creators | Hui-Juan Pan, 潘惠娟 |
| Contributors | Min-Te Chen, 陳明德 |
| Source Sets | National Digital Library of Theses and Dissertations in Taiwan |
| Language | en_US |
| Detected Language | English |
| Type | 學位論文 ; thesis |
| Format | 33 |
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