摘要
南海在临震前常出现大面积的卫星热红外图像亮温异常。本文旨在对南海临震前卫星热红外增温异常的原因进行初步的探讨。经长期观察与对比 ,发现南海临震前卫星热红外增温异常与已知的浅水区油气和深水区潜在的天然气水合物藏关系密切 ,而与扩张中心区关系不大。结合前人的实验模拟结果认为 :南海临震前卫星热红外增温异常乃临震前各种应力作用于油 (气 )藏、海底天然气水合物藏等 ,使其发生漏渗或分解 ,甲烷等气体扩散至海面以上 ,在瞬变电场、太阳辐射等的作用下所致 。
High temperature often occurs in Satellite based Thermal Infrared Scanning Images (STISI) of the South China Sea before earthquake. This paper aims at interpreting the formation of the temperature anomaly in STISI of the South China Sea before earthquake. According to long period of observation and analysis, it is found that high temperature anomaly in STISI before earthquake is closely related to gas and oil reserves as well as gas hydrates, but has little to do with the expanding area in the South China Sea. Combined with previous experimental results, the authors consider that the high temperature in STISI results from the induced polarization and the green house effects of such gases as CH 4 and CO 2 emitted from the seepages of conventional oil and gas reserves and marine gas hydrates before earthquake.
出处
《地球学报》
EI
CAS
CSCD
北大核心
2002年第1期42-46,共5页
Acta Geoscientica Sinica
基金
"8 63"海洋领域前沿探索课题 ( 82 0 探 5 )资助
关键词
南海
临震前卫星热红外增温
常规油气藏
天然气水合物藏
the South China Sea high temperature anomaly in STISI before earthquake conventional oil and gas reserves gas hydrates
