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东昆仑—阿尔金地区遥感地质解译与成矿预测 被引量:21
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作者 张微 杨金中 +5 位作者 方洪宾 余江宽 陈微 孙卫东 于浩 常玲 《西北地质》 CAS CSCD 2010年第4期288-294,共7页
通过提取遥感找矿地质异常信息,从宏观和多角度预测矿床存在的有利区域。以东昆仑—阿尔金地区为例,通过运用影像纠正、假彩色合成与彩色空间变换、图像增强处理(比值、主成分分析等)、掩膜处理、数据融合以及遥感异常信息多层次筛选技... 通过提取遥感找矿地质异常信息,从宏观和多角度预测矿床存在的有利区域。以东昆仑—阿尔金地区为例,通过运用影像纠正、假彩色合成与彩色空间变换、图像增强处理(比值、主成分分析等)、掩膜处理、数据融合以及遥感异常信息多层次筛选技术、影像镶嵌、地质信息综合分析等方法,提取与成(控)矿作用相关的蚀变异常信息和构造信息,确定了基于蚀变异常与线环构造信息的典型矿物遥感找矿模型,并结合多源信息对东昆仑—阿尔金地区进行了成矿预测。 展开更多
关键词 遥感图像解译 遥感蚀变信息提取 遥感找矿模型 遥感成矿预测 东昆仑—阿尔金
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Study on the Recurrence Probability of Strong Earthquakes of Faults
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作者 Zhu Yuanqing Xie Chaodi +1 位作者 Song Xiuqing Qin Haowen 《Earthquake Research in China》 2014年第2期152-163,共12页
Based on the physical model of Brownian passage time,the probabilities of recurrence of strong earthquakes on the major active faults in China are calculated in different predictive time spans,based mainly on the anal... Based on the physical model of Brownian passage time,the probabilities of recurrence of strong earthquakes on the major active faults in China are calculated in different predictive time spans,based mainly on the analysis of the earthquake preparation process before a strong earthquake occurs. Furthermore,the seismic risks on active faults are studied. The results show that the earthquake probabilities on the Xianshuihe fault,the Altyn Tagh fault,the east Kunlun fault and Xiaojiang fault are significantly greater than other faults in the Chinese mainland,which indicates that the level of stress accumulation on these faults are higher than on other faults. Therefore,these faults may have a seismic risk for strong earthquake in future. 展开更多
关键词 Seismic risk Brownian passage time model Conditional probability FAULT Earthquake recurrence
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