基于MGIS与MODIS SST数据的黑潮海表温度锋特征分析  

Temp-spatial Patterns Extracting and Analysis of Sea Surface Warm Front of Kuroshio Based on Multi-Temporal RS Images and MGIS

作　　者：孙晓宇[1] 苏奋振[1] 吕婷婷[1,2] 高义[1] 

机构地区：[1]中国科学院地理科学与资源研究所,北京100101 [2]北京师范大学地表过程与资源生态国家重点实验室,北京100875

出　　处：《地球信息科学》2009年第5期566-571,共6页Geo-information Science

基　　金：国家自然科学基金项目"基于栅格的时空关联规则与过程关联规则提取研究"(40571129);中国科学院创新课题(kzcx2-yw-304-01)

摘　　要：本文利用我国自主研发的海洋地理信息系统软件MaXplorer,以黑潮为例,阐述了基于过程的海洋形态特征提取方法,利用VC++,对MODIS水星SST时间序列数据进行海表温度锋抽取,并分析了2003年东海黑潮表层温度锋位置的季节性变迁。结果表明,东海黑潮表层温度锋位置的季节性变化不大,只是在台湾东北部海域和北纬30°附近海域季节性变化比较活跃,由于夏季东海表层水温比较均匀,基本保持在28℃以上,温度锋位置难以确定。其他3个季节温度锋的位置由于受海底地形的影响,基本保持在200m等深线附近的陆坡区,而在台湾岛东北部有一个明显的先是气旋,后是反气旋的弯曲,冬季的温度锋位置相对稍偏东,秋季的温度锋路线比较曲折。A method to extract marine hydrographic characteristics based on line process is introduced in this paper.The program written in Visual C＋＋ has already integrated in MaXplorer,which is a marine geographic information system platform developed by China.By this method,time series MODIS-SST data were used to extract sea surface warm front of Kuroshio in East China Sea.The seasonal change of the warm front location was analyzed based on the extracted results above.It showed that the seasonal change of the warm front location of the top layer of Kuroshio is not very evident in East China Sea in general,except in the area of about 30°N and the area near the northeast of Taiwan Island.Because the change of sea surface temperature（SST） in East China Sea in summer is relative small at an average temperature of 28℃,it is difficult to determine the locations of the warm front.The warm front locations in other seasons were occurred along the shelf break near the isobath of 200 meters.In north-eastern of Taiwan Island there is a clear curve which showed a cyclone pattern then an anticyclone pattern.The locations of warm front in winter were occurred in the relatively east part while in autumn,showed a relatively complicated route.

关 键 词：黑潮 温度锋 东海 海洋地理信息系统 MODIS 

分 类 号：P731.27[天文地球—海洋科学]