...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Izvestiya. Physics of the solid earth >Problems of the Joint Inversion of Temporal Gravity Variations with the Data on Land and Seafloor Displacements: a Case Study of the Tohoku-Oki Earthquake of March 11, 2011
【24h】

Problems of the Joint Inversion of Temporal Gravity Variations with the Data on Land and Seafloor Displacements: a Case Study of the Tohoku-Oki Earthquake of March 11, 2011

机译：陆地和海底流离失所数据的时间重力变化的联合反演的问题 - 以2011年3月11日的北京岛地震为例

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

The methodology for the joint inversion of various types of data on the Tohoku-Oki earthquake is presented. It is shown that satellite geodetic (GPS) data, results of SAR interferometry, and coseismic GRACE gravity anomalies are overall fairly consistent with each other. However, the resolution of these data is not high and the rupture surface model based on them is smoothed. Meanwhile, the measured and calculated data agree well, which creates the illusion that the resulting solution is close to the real process. The solution of the inverse problem using also the ocean bottom station displacements shows that the rupture surface models based on the measurement data on land and/or GRACE gravity anomalies alone may significantly differ from the real coseismic displacement field. If the rupture surface is specified inaccurately, then the high quality of data fitting and the checkerboard test do not guarantee highly accurate solution. A similar situation is also observed in estimating the degree of locking along the plate contact within locked segments of the subduction zone. In the paper it is underlined that the accuracy of the inverse problem solution mostly depends on how closely the geodynamic model fits the real process. For increasing the accuracy and degree of detail of the solution, the physics of the coseismic and post-seismic process need to be more adequately described in parallel with developing a more detailed description of the geological structure of a rupture area with allowance for the discontinuities of the medium and a more detailed description of the distribution of the physical parameters.
机译：提出了针对Tohoku-Oki地震各种数据的联合反演的方法。结果表明，卫星大地测量（GPS）数据，SAR干涉测量的结果，以及如何互相符合彼此的态度。但是，这些数据的分辨率不高，并且基于它们的破裂表面模型进行平滑。同时，测量和计算的数据很好地同意，这会产生所得解决方案接近真实过程的错觉。使用海底站位移的逆问题的解决方案表明，基于陆地和/或雍容重力异常的测量数据的破裂表面模型可能与真正的电动发电机置换场显着不同。如果断裂表面是不准确的，那么高质量的数据配件和棋盘测试不能保证高度准确的解决方案。在估计俯冲区的锁定区段内的板触点沿板接触的锁定程度也观察到类似的情况。在本文中，它强调，反问题解决方案的准确性主要取决于地磁模型的符合真实过程的束缚。为了提高解决方案的准确性和细节程度，需要更加充分地描述电影发作和后地震过程的物理，以及开发更详细地描述具有津贴的破裂区域的抵消介质和更详细地描述物理参数分布。

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