Scaling relations of moment magnitude, local magnitude, and duration magnitude for earthquakes originated in northeast India

In this study, we aim to improve the scaling between the moment magnitude （Mw）, local magnitude （ME）, and the duration magnitude （MD） for 162 earthquakes in Shillong-Mikir plateau and its adjoining region of northeast India by extending the Mw estimates to lower magnitude earthquakes using spectral...

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Bibliographic Details
Published in:Earthquake science 2016-06, Vol.29 (3), p.153-164
Main Author: Bora, Dipok K.
Format: Article
Language:English
Subjects:
Earth and Environmental Science
Earth Sciences
Earthquakes
Estimates
Geophysics/Geodesy
Regression analysis
Research Paper
Seismic activity
Seismic phenomena
Seismograms
Seismology
Spectra
Spectral analysis
东北部
印度
地震
持续时间
换算关系
矩震级
线性回归分析
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Summary:In this study, we aim to improve the scaling between the moment magnitude （Mw）, local magnitude （ME）, and the duration magnitude （MD） for 162 earthquakes in Shillong-Mikir plateau and its adjoining region of northeast India by extending the Mw estimates to lower magnitude earthquakes using spectral analysis of P-waves from vertical component seismograms. The Mw-ML and Mw-MD relationships are determined by linear regression analysis. It is found that, Mw values can be considered consistent with ME and My, within 0.1 and 0.2 magnitude units respectively, in 90 % of the cases. The scaling relationships investigated comply well with similar relationships in other regions in the world and in other seismogenic areas in the northeast India region.
ISSN:1674-4519
1867-8777
DOI:10.1007/s11589-016-0154-3