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首页> 外文期刊>Physica, A. Statistical mechanics and its applications >Multifractal analysis of 2001 Mw7.7 Bhuj earthquake sequence in Gujarat, Western India
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Multifractal analysis of 2001 Mw7.7 Bhuj earthquake sequence in Gujarat, Western India

机译：2001 MW7.7 Bhuj地震序列在印度古吉拉特邦的多重分析分析

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摘要

The 2001 Mw7.7 Bhuj mainshock seismic sequence in the Kachchh area, occurring during 2001 to 2012, has been analyzed using mono-fractal and multi-fractal dimension spectrum analysis technique. This region was characterized by frequent moderate shocks of Mw >= 5.0 for more than a decade since the occurrence of 2001 Bhuj earthquake. The present study is therefore important for precursory analysis using this sequence. The selected long sequence has been investigated first time for completeness magnitude Mc 3.0 using the maximum curvature method. Multi-fractal Dq spectrum (Dq similar to q) analysis was carried out using effective window-length of 200 earthquakes with a moving window of 20 events overlapped by 180 events. The robustness of the analysis has been tested by considering the magnitude completeness correction term of 0.2 to Mc 3.0 as Mc 3.2 and we have tested the error in the calculus of Dq for each magnitude threshold. On the other hand, the stability of the analysis has been investigated down to the minimum magnitude of Mw >= 2.6 in the sequence. The analysis shows the multi-fractal dimension spectrum Dq decreases with increasing of clustering of events with time before a moderate magnitude earthquake in the sequence, which alternatively accounts for non-randomness in the spatial distribution of epicenters and its self-organized criticality. Similar behavior is ubiquitous elsewhere around the globe, and warns for proximity of a damaging seismic event in an area. OS: Please confirm math roman or italics in abs. (C) 2017 Elsevier B.V. All rights reserved.
机译：2001年至2012年发生在Kachchh地区的2001 MW7.7 Bhuj Mainshock地震序列，通过单分形和多分形尺寸谱分析技术进行了分析。自2001年Bhuj地震发生以来，该地区的特点是MW> = 5.0的频率频率> = 5.0，超过十年。因此，本研究对于使用该序列的前兆分析很重要。使用最大曲率法研究完整性幅度MC 3.0的首次研究了所选的长序列。使用有效窗口长度200个地震进行多分形DQ光谱（DQ类似于Q）分析，其中具有由180个事件重叠的20个事件的移动窗口。通过将0.2到MC 3.0的大小完整性校正项视为MC 3.2，已经测试了分析的稳健性，并且我们已经在DQ的微积分中测试了每个幅度阈值。另一方面，在序列中已经研究了分析的稳定性至MW> = 2.6的最小幅度。该分析表明，多分形尺寸谱DQ随着序列中的适度地震前的时间的时间而增加，其替代地占震中空间分布的非随机性及其自组织临界性。类似的行为是全球其他地方的普遍存在，并警告了一个地区损坏的破坏性地震事件。操作系统：请在ABS中确认数学罗马或斜体。 （c）2017年Elsevier B.V.保留所有权利。

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