广东海洋大学学报2017，Vol.37Issue(6)：57-64,8.DOI:10.3969/j.issn.1673-9159.2017.06.010
大亚湾表层叶绿素浓度时空特征的遥感分析
The Satellite Remotely-sensed Analysis of Temporal and Spatial Variation of Surface Chlorophyll in the Daya Bay
摘要
Abstract
Based on MODIS satellite remote sensing data from 2003 to 2014, this study investigated the spatial-temporal distribution characteristics of chlorophyll a (chl-a) in Daya Bay using the empirical orthogonal function (EOF), and analyzed the relationship between chl-a distribution and influential factors. Results showed that the chl-a concentration in Daya Bay had consistent spatial-temporal characteristics with high value in summer and low value in spring. Furthermore, there was a decreasing trend from estuary to offshore. The cumulative contributions of the first 3 modes obtained by EOF analysis accounted for 32.5%,16.8%,8.5% of the total variance, respectivelywhich. This was mostly reflected in the major variation of chl-a concentrations inDaya Bay. The first EOF mode showed that high chl-a concentration occurred along the Xiayong and Central Islands. The variation center located in the northern Zhongyan Islands. The variation period of the first mode was 13.3 months. The second EOF mode displayed the seasonal variability with periods of 6 months and 12 month and the variation of chl-a concentration was different in the east and the west of Baihe Zhou. High chl-a concentration also appeared east of Shengzhu Island, with the variation center was located at the same region as it in the first mode. The variation center of the third EOF mode was located in the same region as it was in the first and second mode. The variation period was 8.57 and 17.14 months in the third mode. In summary, the distribution of chl-a in Daya Bay was related to the SST, wind, tidal current and the human activities.关键词
大亚湾/叶绿素浓度/EOF/MODIS/WindSATKey words
Daya Bay/chlorophyll/EOF/MODIS/WindSAT分类
海洋科学引用本文复制引用
沈春燕,陈海生,赵辉..大亚湾表层叶绿素浓度时空特征的遥感分析[J].广东海洋大学学报,2017,37(6):57-64,8.基金项目
国家自然科学基金项目(41376125) （41376125）
广东省自然科学基金项目(2016A030313754) （2016A030313754）
广东海洋大学校选项目(1312437) （1312437）
广东海洋大学创新强校项目(GDOU2014050201) （GDOU2014050201）
