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首页> 外文期刊>Earth, planets and space: EPS >Well-resolved hypocenter distribution using the double-difference relocation method in the region of the 2007 Chuetsu-oki Earthquake
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Well-resolved hypocenter distribution using the double-difference relocation method in the region of the 2007 Chuetsu-oki Earthquake

机译：使用双差分重定位方法在2007年中越冲木地震区域中解析得很好的震源分布

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The 2007 Chuetsu-oki Earthquake ( M j = 6.8) occurred in the eastern margin of the Japan Sea where high strain rates have been observed and many large earthquakes have occurred. The main shock was located near the Western Nagaoka Basin active fault system dipping in the westward direction. We estimated the well-resolved hypocenter location around the main shock rupture zone from the differential arrival times obtained by both manual picking and waveform cross-correlation analysis. From the relocated aftershock distributions, we successfully resolved the detailed fault structures activated by the main shock. The estimated fault model resolves four individual fault segments. The fault model suggests that the main shock predominantly ruptured the southeastward dipping fault planes. On the other hand, the aftershocks around the hypocenter of the main shock occurred on both the northwestward and southeastward dipping fault planes. Both fault planes around the hypocenter of the main shock may have been nearly coincidentally ruptured during the main shock.
机译：2007年日本中越地震（M j = 6.8）发生在日本海东部边缘，那里观测到高应变率，并发生了许多大地震。主震位于西长冈盆地活动断裂系统附近。我们通过手动拾取和波形互相关分析获得的差分到达时间，估计了主震破裂带周围良好解析的震源位置。通过重新定位的余震分布，我们成功地解决了主震激活的详细断层结构。估计的故障模型可解析四个单独的故障段。断层模型表明，主震主要破坏了东南倾角断层。另一方面，主震震源周围的余震发生在西北和东南倾角断层平面上。在主震过程中，围绕主震震源的两个断层平面可能几乎同时破裂了。

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