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科技导报
|研究论文
2007
, 25
(0706) :
32
-37
台湾恒春地震前的卫星热红外异常特征及其机理
全屏
刘善军1,吴立新1,2,李金平2,董彦卿2,马保东1
作者信息
1,东北大学测绘遥感与数字矿山研究所 沈阳
2中国矿业大学3S与沉陷工程研究所 北京
通讯作者:
刘善军
Features and Mechanisms of the Satellite Thermal Infrared Anomaly
Affiliations
出版时间: 2007-03-25
文章导航
构造地震前卫星热红外异常是国际地震界与遥感界的共同研究热点。分析2006年12月26日台湾恒春7.2级地震前出现的卫星热红外异常现象,其特征表现为:震前6 d在菲律宾东部太平洋海域出现片状热异常,并不断向西迁移;震前2 d到达菲律宾;之后沿马尼拉海沟转为北上,并由远到近、逐渐向震中迁移,同时异常的强度及范围逐渐扩大;临震前1 d达到高峰,升温幅度约10℃。结合该震区构造背景,对此次卫星热红外异常与构造活动的关系进行了分析,表明震前红外异常的出现及其时空演化受构造活动控制显著。利用已有遥感-岩石力学基础实验结果,对震前红外异常的产生机制进行了讨论,提出震前构造应力场的迁移与集中活动所激发与加剧的应力热与地热的传递,及其与孕震区温室效应的叠加,是此次地震卫星热红外异常产生的主要机理。
台湾地震
/
热红外异常
/
机理
/
遥感-岩石力学
/
卫星遥感
Thermal infrared anomaly before tectonic earthquake is a much studied topic related with seismology and remote sensing. In this paper, the thermal infrared anomaly before the Hengchun earthquake (Dec. 26, 2006, Ms=7.2) in Taiwan region is analyzed. The results show that the anomaly has the following features: ① a thermal infrared anomaly area appeared on the east of Philippines six days before Hengchun earthquake, and it gradually moved toward west; ② the anomaly moves to Philippines two days before shocking; ③ then the anomaly changed its moving direction from westward to northward, the anomaly became gradually close to the epicenter, and the strength as well as the scope of the anomaly region became more and more larger; ④ the strength of the anomaly reached the peak one day before shocking, and the brightness temperature increased by about 10℃. The relationship between the thermal anomaly and the tectonic activity of Taiwan region is also studied. The results indicate that the satellite thermal anomaly before Hengchun earthquake is evidently controlled by the tectonic activity of Taiwan region. It is suggested that the overall action of the out-going stress heating effect and the geothermal and the greenhouse effect initiated and amplified by the movement and concentration of crustal stress field in the seismogenic zone is the chief mechanism of satellite thermal anomaly before Hengchun earthquake.
刘善军;吴立新;李金平;董彦卿;马保东.
台湾恒春地震前的卫星热红外异常特征及其机理.
科技导报,
2007
, 25
(0706)
: 32
-37
.
.
Features and Mechanisms of the Satellite Thermal Infrared Anomaly[J].
Science & Technology Review ,
2007
, 25
(0706)
: 32
-37
.
2007年第25卷第0706期
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接收时间:2008-11-21
首发时间:2007-03-25
出版时间:2007-03-25
收稿日期:2008-11-21
修回日期:1900-01-01
https://castjournals.cast.org.cn/joweb/kjdb/CN/1242118334972494695
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2种不同金属材料的力学参数
科 Family 属数 Number of genus 种数 Number of species 占总种数比例 Percentage of total species (%) 属 Genus 种数 Number of species 占总种数比例 Percentage of total species (%) 鹅膏菌科Amanitaceae 2 11 5.26 鹅膏菌属 Amanita 10 4.78 小菇科 Mycenaceae 2 12 5.74 丝盖伞属 Inocybe 5 2.39 多孔菌科 Polyporaceae 8 14 6.70 蜡蘑属 Laccaria 5 2.39 红菇科 Russulaceae 3 23 11.00 小皮伞属 Marasmius 6 2.87 小菇属 Mycena 11 5.26 光柄菇属 Pluteus 5 2.39 红菇属 Russula 17 8.13 栓菌属 Trametes 5 2.39
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