海洋科学2016，Vol.40Issue(1)：85-93,9.DOI:10.11759/hykx20150313003
中国远洋作业渔场海表温度异常年际变动分析
Sea surface temperature anomaly’s interannual variability in pelagic fishing grounds of China
摘要
Abstract
Based on monthly averaged sea surface temperature data from the U.S. National Oceanic and Atmos-pheric Administration’s Climate Prediction Center, we conducted a statistical analysis of sea surface temperature anomalies (SSTA) of China’s seven main pelagic fishing grounds, the East Pacific, West Pacific, Middle Atlantic, North Pacific, Southeast Pacific, Southwest Atlantic, and Indian Ocean fishing grounds over a 30-year time period (1982–2011) using the power spectrum method to calculate remarkable variation periods in the time series. We also performed a correlation analysis to determine the correlation between trend-removed SSTA and the southern oscil-lation index (SOI). The results show that the SSTA of China’s main pelagic fishing grounds fluctuate between –0.3℃ and 0.3℃ with a 3–4-year period and demonstrate a general rising trend over the 30-year period. A significant cor-relation (r =−0.509) exists between the trend-removed SSTA and SOI, indicating that the SSTA of the fishing grounds are closely related to ENSO events. In terms of the SSTA fluctuation trend of the fishing grounds, we found that except for the downward SSTA trends in the East Pacific and Southeast Pacific, the other fishing grounds’ SSTA increases to a certain degree, especially in the North Pacific. In terms of the fishing ground SSTA fluctuation period, the SSTA variation period is 3-4 years in the East Pacific as well as in the Southwest Atlantic, 4 years in the Southeast Pacific, 5 years in the West Atlantic, and 10 years in the other areas. The correlation analysis between the trend-removed SSTA of each fishing ground and the SOI indicates that the SOI is correlated to the SSTA of the East Pacific, middle Atlantic, and Southwest Atlantic, with correlation coefficients of –0.895, 0.471, and –0.598, respec-tively, and no significant correlation was observed for the others. A comparison of the fishing grounds reveals the following features. At the equator, the SSTA change of the East Pacific fishing ground is always opposite to that of the West Pacific and Middle Atlantic fishing grounds but is in-phase with that of the Indian Ocean fishing ground. Among the three fishing grounds in the mid-latitudes, SSTA changes in the Southern Hemisphere latitudes are more stable than those in the northern latitudes. A significant correlation exists between the East Indian and West Indian Oceans, and positive and negative changes in the SSTAs of the entire Indian Ocean are basically the same.关键词
远洋渔场/海表温度/海表温度异常Key words
pelagic fishing ground/sea surface temperature/sea surface temperature anomaly分类
农业科技引用本文复制引用
纪世建,周为峰,樊伟,靳少非,崔雪森..中国远洋作业渔场海表温度异常年际变动分析[J].海洋科学,2016,40(1):85-93,9.基金项目
国家科技支撑计划项目(2013BAD13B06) （2013BAD13B06）
上海市科学技术委员会科研计划项目(15DZ1202201)@@@@National Key Technology Support Program (2013BAD13B06) （15DZ1202201）
Scientific Research Program Supported by Shanghai Science and Tech-nology Commission (15DZ1202201) （15DZ1202201）
