The relationship between the body wave and the local magnitudes for Himalayan earthquakes
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Abstract
Body wave (MB ) and local magnitude (ML) were determined
for earthquakes occurring within the epicentral range of 2 to 10°
f r om New Delhi during the years 1965-1974. The following relationships
between t h em were found to hold good.
M l = (0.95 ± 1.4) + (0.81 ± 0.06) M B (A = 2» to 5°)
ML = (1.26 ± 0.76) + (0.76 ± 0.02) M B (A = 5° to 10°)
ML = (1-00 ± 0.57) + (0.80 ± 0.01) M B (A = 2° to 10»)
The regional variation of ( MCGS — -MB) has been discussed in terms
of the focal mechanism and other parameters. It has been found t h at
(MCGS— MB) is positive near India-Nepal and Tibet border while elsewhere
it is generally negative.
for earthquakes occurring within the epicentral range of 2 to 10°
f r om New Delhi during the years 1965-1974. The following relationships
between t h em were found to hold good.
M l = (0.95 ± 1.4) + (0.81 ± 0.06) M B (A = 2» to 5°)
ML = (1.26 ± 0.76) + (0.76 ± 0.02) M B (A = 5° to 10°)
ML = (1-00 ± 0.57) + (0.80 ± 0.01) M B (A = 2° to 10»)
The regional variation of ( MCGS — -MB) has been discussed in terms
of the focal mechanism and other parameters. It has been found t h at
(MCGS— MB) is positive near India-Nepal and Tibet border while elsewhere
it is generally negative.
Article Details
How to Cite
CHHABRA, M. P., CHAUHAN, R. K. S., SRIVASTAVA, H. N. and CHAUDHITRY, H. M. (1975) “The relationship between the body wave and the local magnitudes for Himalayan earthquakes”, Annals of Geophysics, 28(4), pp. 381–393. doi: 10.4401/ag-4909.
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