碩士 / 國立臺灣海洋大學 / 海洋環境資訊系 / 103 / In this study, the Archiving, Validation and Interpretation of Satellite Oceanographic (AVISO) multi-satellite altimeter data from January 1993 to December 2013 are processed, using ONI and Empirical Orthogonal Function (EOF) analysis to study the sea level variability adjacent to Taiwan caused by El Ni#westeur050#o/La Ni#westeur050#a. The study areas include the Philippine Sea, the South China Sea, and the East China Sea. The results show that the sea levels rise slowly in three seas during the last 20 years, especially in the Philippine Sea and the South China Sea. The mean monthly sea levels of the Philippine Sea and the South China Sea in El Ni#westeur050#o years are lower than the normal years, but they are opposite in La Ni#westeur050#a years. The sea levels in the East China Sea are higher in El Ni#westeur050#o and La Ni#westeur050#a years than that in normal years. The sea levels in the Philippine Sea are low in southern part but high in northern part, and are low in winter but high in summer. The variations of sea level and ONI are consistency with El Nino/La Ni#westeur050#a events, with a correlation coefficient of 0.67. The relative changes of the sea level in high latitudes and the low latitudes are greater in El Ni#westeur050#o years than that in La Ni#westeur050#a years. The sea levels of the South China Sea are high in southeast part but are low in northwest part, and are low in winter but high in summer. When in winter, the relative changes of sea level are greater than that in summer. The variations of sea level and ONI are consistency with El Ni#westeur050#o/La Ni#westeur050#a events with a correlation coefficient of 0.46. The sea levels in the East China Sea decrease from the southeast part to the northwest part, and are low in winter and high in summer. This indicates that the sea level changes in the Philippine Sea, the South China Sea, and the East China Sea have the interannual and seasonal variability. The impacts of El Ni#westeur050#o/La Ni#westeur050#a on the sea level in the Philippine Sea and the South China Sea are greater than that in the East China Sea.
Keywords: sea level, ONI, EOF, Philippine Sea, South China Sea, East China Sea
| Identifer | oai:union.ndltd.org:TW/103NTOU5276009 |
| Date | January 2015 |
| Creators | Yu, Hui-Chen, 尤惠貞 |
| Contributors | Kuo, Nan-Jung, 郭南榮 |
| Source Sets | National Digital Library of Theses and Dissertations in Taiwan |
| Language | zh-TW |
| Detected Language | English |
| Type | 學位論文 ; thesis |
| Format | 37 |
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