| 地壳形变与地面温度异常及其关联分析:以汶川地震为例 |
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| 引用本文： | 李金平,刘善军.地壳形变与地面温度异常及其关联分析:以汶川地震为例[J].地理与地理信息科学,2009,25(1). |
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| 作者姓名： | 李金平 刘善军 |
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| 作者单位： | 1. 中国矿业大学3S与沉陷工程研究所,北京,100083
2. 东北大学测绘遥感与数字矿山研究所,辽宁,沈阳,110004 |
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| 基金项目： | 国家杰出青年科学基金 |
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| 摘 要： | 地壳形变和地面温度异常是构造地震活动监测的两项重要指标,时间序列分析是提取地震活动异常信息的主要方法.该文以汶川地震为例,分析发现汶川震前位移、基线长度、应变分量时间序列出现显著的地壳形变动态异常,同震形变最为显著.分析地面温度增量时间序列,发现震前震中附近出现3次异常,持续时间为9～13 d,地面异常增温高达10°C,增温高值区主要沿龙门山断裂、鲜水河断裂、红河断裂展布,与活动断裂的空间分布具有很好的一致性.对同一像元应变与地面温度增量时间序列进行关联分析,发现地壳形变与地面温度异常特征具有一定的对应关系.
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| 关 键 词： | 地壳形变 时间序列分析 应变 活动断裂 |
On the Anomalies of Crustal Deformation & Surface Temperature and Its Correlation:A Case Study of Wenchuan Earthquake |
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| LI Jin-ping,LIU Shan-jun.On the Anomalies of Crustal Deformation & Surface Temperature and Its Correlation:A Case Study of Wenchuan Earthquake[J].Geography and Geo-Information Science,2009,25(1). |
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| Authors: | LI Jin-ping LIU Shan-jun |
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| Institution: | 1.Institute for RS/GPS/GIS and Subsidence Engineering Research;China University of Mining and Technology;Beijing 100083;2.Institute for RS/GPS/GIS & Digital Mine Research;Northeastern University;Shenyang 110004;China |
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| Abstract: | Crustal deformation and surface heat field anomalies serve as valuable indexes for the remote sensing monitoring of tectonic earthquake activity.The analysis of time series is a primary method for extracting the anomaly information of earthquake activity.In this paper,the variation features of time series,such as displacement,baseline length and the second shear strain,were studied for analyzing Wenchuan Ms8.0 earthquake.The analysis showed that obvious deformation and temperature anomalies had appeared bef... |
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| Keywords: | GPs |
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