a) Give reasons why moment magnitude Mw is the most common used method to define the...

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Civil Engineering

a) Give reasons why moment magnitude Mw is the most common usedmethod to define the size of an earthquake.
Data on a major earthquake are as follows:
Â· Depth of fault rupture is 25 km
Â· Length of the surface faulting is 800 km
Â· Average slip along the fault is 5 m
Â· Shear modulus of material along the fault plane is 2x1010N/m2
b) Calculate the seismic moment, Mo
c) Compute the moment magnitude of the earthquake (note, Mo indyne-cm; one Newton-m = 107 dyne-cm)

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4.2 Ratings (552 Votes)

PART aMoment magnitude measures the earthquakes magnitudequantitativelyMoment magnitude Mw is the most common method to define thesize of an earthquake because of the following reasonsEarthquake size measurement using Mw is related to magnitude ofseismic moment Mo than the amplitude of seismic waves seeformulas A and B belowSeismic moment See Answer

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