Scaling relations of moment magnitude,local magnitude,and duration magnitude for earthquakes originated in northeast India |
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| Authors: | Dipok K Bora |
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| Affiliation: | Department of Physics, Diphu Government College, Diphu, Karbi Anglong, Assam 782462, India |
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| Abstract: | In this study, we aim to improve the scaling between the moment magnitude (M W), local magnitude (M L), and the duration magnitude (M D) for 162 earthquakes in Shillong-Mikir plateau and its adjoining region of northeast India by extending the M W estimates to lower magnitude earthquakes using spectral analysis of P-waves from vertical component seismograms. The M W-M L and M W-M D relationships are determined by linear regression analysis. It is found that, M W values can be considered consistent with M L and M D, 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. |
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| Keywords: | Local magnitude Moment magnitude Duration magnitude Shillong-Mikir plateau |
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