碩士 / 國立海洋大學 / 漁業科學系碩士在職專班 / 91 / With an increasing availability of satellite sea surface temperature (SST) data, it has become possible to improve greatly from the very limited spatial data offered by ship observation. Empirical orthogonal function (EOF) analysis was used to study a time-series of the advanced Very High Resolution Radiometer (AVHRR) imageries in the waters of East China Sea to examine the temporal and spatial characteristics and to determine the dominant pattern of sea surface temperature (SST) variability for 72 months from January 1996 to December 2001. The temporal monthly variance was ranged from 17.4 (February 1997) to 30.2 (July 2001) in this period. The spatial variance was consistent with a temperature front at the 45 degree line from the Central part of Taiwan Strait to the Northeastern East China Sea in winter and associated with the global change environments (i.e. Elnino phenomena) and the strong temperature contrast to the Kuroshio branch or the South China Sea Warm Current. It is difficult to find out the upwelling phenomena in the Southeastern Eash China Sea in summer. The EOF patterns and the eigenvalues in time and space were similar to each other. The dominant EOF mode showed a temperature front where a cool fresh water extending from China Coastal Waters was distinguishable from the warm current. The second mode revealed that the heating exchange mechanism in the coastal waters was greater than that in the continental waters and offshore waters. These two temporal and spatial modes accounted for 73.84% and 81.64% of the SST variance, respectively. in relation to the in this paper.
| Identifer | oai:union.ndltd.org:TW/091NTOU1451015 |
| Date | January 2003 |
| Creators | Chih- Hao Wu, 吳志豪 |
| Contributors | Ming-An Lee, 李明安 |
| Source Sets | National Digital Library of Theses and Dissertations in Taiwan |
| Language | zh-TW |
| Detected Language | English |
| Type | 學位論文 ; thesis |
| Format | 71 |
Page generated in 0.0093 seconds