| 红河断裂热红外高温条带的成因及其与地震活动性关系的探讨 |
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| 引用本文： | 屈春燕,单新建,马瑾.红河断裂热红外高温条带的成因及其与地震活动性关系的探讨[J].地震学报,2006,28(1):91-97. |
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| 作者姓名： | 屈春燕 单新建 马瑾 |
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| 作者单位： | （中国北京100029中国地震局地质研究所地震动力学国家重点实验室） |
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| 摘 要： | 针对2003年发生在云南大姚的两次6级以上地震，利用1999年、2003年和2004年的NOAA卫星资料，对川滇地区（22deg;～33deg;N，97deg;～107deg;E）的热红外影像进行了对比分析解译，对红河断裂高温条带的亮温年变特征作了分段和分区统计分析. 结果表明，红河断裂高温条带的成因与水系和地形等地表环境因素有关，是由下垫面热辐射差异造成的红外影像特征. 但在地震年份，高温条带内的亮温年均值明显高于非地震年份，这说明地震年份断裂的热活动性增强，能够引起高温年变异常. 利用卫星热红外遥感资料，通过监测不同年份之间高温条带的相对活动水平， 可以对这种地震前的断裂热活动性进行监测和异常判断.
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| 关 键 词： | 热红外遥感 高温年变 地震征兆 断裂活动 |
| 文章编号： | 0253-3782(2006)01-0091-07 |
| 修稿时间： | 2005年1月31日 |
FORMATION CAUSE OF THERMAL INFRARED HIGH TEMPERATURE BELT ALONG HONGHE FAULT AND ITS RELATION TO EARTHQUAKES |
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| Qu Chunyan,DAN Xinjian,Ma Jin.FORMATION CAUSE OF THERMAL INFRARED HIGH TEMPERATURE BELT ALONG HONGHE FAULT AND ITS RELATION TO EARTHQUAKES[J].Acta Seismologica Sinica,2006,28(1):91-97. |
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| Authors: | Qu Chunyan DAN Xinjian Ma Jin |
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| Abstract: | Aiming at two Dayao earthquakes with magnitude more than 6 occurred in 2003 in Yunnan, we analyzed and interpreted the NOAA satellite thermal infrared images of 1999, 2003 and 2004 in Chuan-Dian region, and also calculated the annual variation of brightness temperature of the hot belt along Honghe fault to explore the formation cause of the high temperature belt and its relation to the earthquakes. The results show that the high temperature belt along Honghe fault is caused by geographic environment factors, such as water system and terrain. But the annual average brightness temperature of the belt in earthquake year of 2003 is clearly higher than in no earthquake years of 1999 and 2004, this maybe indicate that the thermal activities of Honghe fault increase in earthquake years, and can cause the annual variation anomaly of brightness temperature. We can detect and monitor this thermal activities of Honghe fault before earthquake by analyzing and comparing the relative changes of thermal infrared brightness temperature of the hot belt in several different years. |
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| Keywords: | thermal infrared remote sense annual variation anomaly earthquake precursor fault activity |
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