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Homogenization of Earthquake Catalog for Northeast India and Adjoining Region

机译：印度东北及邻区地震目录的同质化

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摘要

A catalog for northeast India and the adjoining region for the period 1897–2009 with 4,497 earthquakes events is compiled for homogenization to moment magnitude M w,GCMT in the magnitude range 3–8.7. Relations for conversion of m b and M s magnitudes to M w,GCMT are derived using three different methods, namely, linear standard regression, inverted standard regression (ISR) and orthogonal standard regression (OSR), for different magnitude ranges based on events data for the catalog period 1976–2006. The OSR relations for M s to M w,GCMT conversion derived in this paper have significantly lower errors in regression parameters compared to the relations reported in other studies. Since the number of events with magnitude ≥7 for this region is scanty, we, therefore, considered whole India region to obtain the regression relationships between M w,GCMT and M s,ISC. A relationship between M w,GCMT and M w,NEIC is also obtained based on 17 events for the range 5.2 ≤ magnitude ≤ 6.6. A unified homogeneous catalog prepared using the conversion relations derived in this paper can serve as a reference catalog for seismic hazard assessment studies in northeast India and the adjoining region.
机译：编制了印度东北及邻国1897-2009年期间发生的4497次地震的目录，以将矩量级M w，GCMT 均匀化，范围为3-8.7。使用线性标准回归，倒置标准回归（ISR）和正交标准回归（三种）将mb 和M s 量级转换为M w，GCMT 的关系得到。 OSR），基于目录期1976-2006年的事件数据，用于不同的幅度范围。与其他研究报告的关系相比，本文得出的M s到M w的OSR关系，GCMT的OSMT关系在回归参数方面的误差要低得多。由于该区域中≥7级的事件数量很少，因此，我们考虑整个印度区域以获得M w，GCMT 和M s，ISC 之间的回归关系。 M w，GCMT 和M w，NEIC 之间的关系也基于5.2≤幅度≤6.6范围内的17个事件获得。利用本文得出的转换关系编制的统一的均匀目录可以作为印度东北部及邻区地震危险性评估研究的参考目录。

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