基于PSInSAR技术的长白山天池火山形变监测

doi:10.3969/j.issn.0253-4967.2014.02.014

地震地质 ›› 2014, Vol. 36 ›› Issue (1): 177-185.DOI: 10.3969/j.issn.0253-4967.2014.02.014

基于PSInSAR技术的长白山天池火山形变监测

唐攀攀^1,2,3, 单新建¹, 王长林²

1 中国地震局地质研究所, 地震动力学国家重点实验室, 北京 100029;
2 中国科学院遥感与数字地球研究所, 北京 100094;
3 中国科学院大学, 北京 100049

收稿日期:2012-09-20 修回日期:2013-11-25 出版日期:2014-03-30 发布日期:2014-04-08
基金资助:
国家自然科学基金（41111140386，40874006）和地震动力学国家重点实验室项目（LED2008A06）共同资助

RESEARCH ON THE DEFORMATION MONITORING OF CHANGBAISHAN VOLCANO BASED ON PSINSAR TECHNIQUE

TANG Pan-pan^1,2,3, SHAN Xin-jian¹, WANG Chang-lin²

1 Institute of Geology, China Earthquake Administration, Beijing 100029, China;
2 Institute of Remote Sensing and Digital Earth, Chinese Academy of Sciences, Beijing 100094, China;
3 University of Chinese Academy of Sciences, Beijing 100049, China

Received:2012-09-20 Revised:2013-11-25 Online:2014-03-30 Published:2014-04-08

摘要/Abstract

摘要： 将PSInSAR技术引入长白山天池火山的形变监测，获取了1992—1998年和2007—2010年2个时段的火山形变信息。结果显示：天池火山在这2个时段内整体抬升，1992—1998年火山较为活跃，雷达视线向平均形变速率为6mm/a，2007—2010年火山活动趋于平缓，雷达视线向平均形变速率为3mm/a；结合水准和GPS数据分析，发现火山口区域地表抬升明显，远离火山口处较为稳定。文中PSInSAR结果与水准数据能较好地吻合，且在空间上有较大覆盖范围，能更直观地反映火山地表的形变特征。

关键词: PSInSAR技术, 长白山天池火山, 形变, 雷达视线向

Abstract: This paper introduces PSInSAR technique for monitoring the deformation of Changbaishan volcano. Two sorts of images, including 19 in the time interval 1992-1998 acquired by JERS-1 SAR sensor and 14 in 2007-2010 acquired by ASAR, are available. The results demonstrate that: the Tianchi volcano had uplifted in the both periods of time. From 1992 to 1998, the Tianchi volcano was active with a mean deformation rate about 6mm/a in the line of radar sight. By contrast, a lower value as much as 3mm/a indicated that the volcano was more stable between 2007 and 2010. A significant character can be realized that deformation occurring around the crater lake, maybe caused by magma activity, was larger than the areas away from volcano. The leveling data acquired between 2006 and 2009 were used to validate the PSInSAR results, and it shows they agree well with each other. What's more, because of larger cover in space dimension, the PSInSAR technique could help us better understand the deformation characteristic of Tianchi volcano, and make a good complement to the field survey.

Key words: PSInSAR technique, Changbaishan Tianchi volcano, deformation, line of radar sight

中图分类号:

317.6

唐攀攀, 单新建, 王长林. 基于PSInSAR技术的长白山天池火山形变监测[J]. 地震地质, 2014, 36(1): 177-185.

TANG Pan-pan, SHAN Xin-jian, WANG Chang-lin. RESEARCH ON THE DEFORMATION MONITORING OF CHANGBAISHAN VOLCANO BASED ON PSINSAR TECHNIQUE[J]. SEISMOLOGY AND GEOLOGY, 2014, 36(1): 177-185.

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基于PSInSAR技术的长白山天池火山形变监测

RESEARCH ON THE DEFORMATION MONITORING OF CHANGBAISHAN VOLCANO BASED ON PSINSAR TECHNIQUE

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