• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文会议>Asian conference on remote sensing >DETECTION OF CRUSTAL MOVEMENTS DUE TO AFTERSHOCKS OF THE 2011 TOHOKU, JAPAN EARTHQUAKE FROM TERRASAR-X IMAGES
【24h】

DETECTION OF CRUSTAL MOVEMENTS DUE TO AFTERSHOCKS OF THE 2011 TOHOKU, JAPAN EARTHQUAKE FROM TERRASAR-X IMAGES

机译：利用TERRASAR-X图像检测2011年日本东北日本东北地震之后的地壳运动

获取原文
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

After the March 11, 2011 Tohoku, Japan earthquake (Mw9.0), numerous aftershocks and induced events occurred in the source region of the main shock and its outside areas. One of the most damaging induced earthquakes with Mw7.1 occurred in Fukushima prefecture on April 11,2011. This event caused the numerous fault scarps, with a maximum displacement of 2.3 m. In this study, two temporal TerraSAR-X images were used to detect the crustal movements in Fukushima region due to these events by two different methods. Firstly, the interferometric (InSAR) analysis was carried out to detect the crustal movement to the radar sensor direction. Due to the temporal decorrelation, InSAR fringes could be obtained in a small part of the area. Secondly, the building-based pixel-offset method, proposed by the present authors, was applied to the SAR intensity images. 2D movements were detected for a half of the study area. Finally, the results were compared with the recorded displacements from GPS ground stations. The difference between the movements detected by the second method and the records was less than 0.3 m, showing high accuracy of our method.
机译：在2011年3月11日日本东北部地震（Mw9.0）之后，主震震源区及其外围地区发生了许多余震和诱发事件。 2011年4月11日，福岛县发生了Mw7.1最具破坏力的诱发地震之一。该事件导致大量断层陡坡，最大位移为2.3 m。在这项研究中，通过两种不同的方法，使用了两个时间TerraSAR-X图像来检测由于这些事件而导致的福岛地区的地壳运动。首先，进行了干涉（InSAR）分析，以检测地壳向雷达传感器方向的运动。由于时间上的去相关，可以在该区域的一小部分获得InSAR条纹。其次，将作者提出的基于建筑物的像素偏移方法应用于SAR强度图像。在研究区域的一半范围内检测到2D运动。最后，将结果与GPS地面站记录的位移进行比较。通过第二种方法检测到的运动与记录之间的差异小于0.3 m，表明我们的方法具有很高的准确性。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号