中国近海海域卫星热红外亮温增温异常探讨

Brightness Temperature Anomalies in Satellite-based Thermal Infrared Remote Sensing along the Offshore China Seas

在大量风云静止气象卫星热红外观测资料的基础上, 对比总结了中国近海海域卫星热红外亮温增温异常的特征,分析了热红外亮温异常与海底常规油气及天然气水合物藏之间的关系, 探讨了中国近海海域卫星热红外增温异常的机制, 指出了中国近海海域天然气水合物的可能赋存区。根据地球排气理论及卫星热红外亮温增温异常与海底烃类聚集体、油气盆地或潜在天然气水合物藏、断裂构造、地震活动等之间的关系, 中国近海临震前卫星热红外增温异常的原因可能与临震前地球排气作用导致的油气渗漏和 (或 )海底天然气水合物分解后扩散有关。中国近海海域的西沙海槽、东沙群岛岛坡、笔架南盆地、北吕宋海槽、南沙海槽、冲绳海槽中南部至西南部等是天然气水合物的可能赋存区。

Based on observations of geo-stationary meteorological satellite data, lots of brightness temperature (anomalies) on the satellite-based thermal infrared remotely sensed images are found along the offshore China seas. After analyzing the brightness temperature anomalous features, and relating these anomalies to the conventional oil & gas fields and non-conventional potential gas hydrate occurrences, the mechanism of the anomaly is discussed. According to these anomalous implications, some possible areas for gas hydrates are pointed out,such as the Xisha Trough, the Dongsha island slope, the marginal Bijianan basin, the North Luzon Trench, the Nansha Trough, the Middle-south to Southwest Okinawa Trough etc.