碩士 / 國立臺灣海洋大學 / 環境生物與漁業科學學系 / 93 / Abstract
In this study the National Oceanic and Atmospheric Administration (NOAA) satellite Advanced Very High Resolution Radiometer (AVHRR) Sea Surface Temperature (SST) data from 1996 to 2001 is used to discuss the effect of the El Niño/ La Niña event on the purse-seine fishery of skipjack tuna in the Western and Central Pacific Ocean (WCPO). The Empirical Mode Decomposition (EMD) is the main method to retrieve Intrinsic Mode Function (IMF) related to the El Niño/ La Niña events. From EMD analysis of the Southern Oscillation Index (SOI), sea surface temperature (SST), eastern boundary of 29℃ isotherm of SST, the zonal centre of fishing ground and the catch per unit effort (CPUE, ton/ haul) of skipjack tuna, we can find that El Niño/ La Niña event have an immediate influence on the SST, eastern boundary of 29℃ isotherm of SST and the zonal centre of fishing ground, except on CPUE of skipjack with 10 months lag. As well as, SST and eastern boundary of 29℃ isotherm of SST have clear influence on zonal centre of fishing ground, except on CPUE of skipjack with 8~9 months lag.
Keywords: Skipjack tuna, Pacific Ocean, ENSO event, Empirical Mode Decomposition, SST, Eastern boundary of 29℃ isotherm of SST, Zonal center of fishing ground, CPUE.
| Identifer | oai:union.ndltd.org:TW/093NTOU5451041 |
| Date | January 2005 |
| Creators | Cheng-Wai Lee, 李政緯 |
| Contributors | , 陳俊德, 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 | 74 |
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