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Problem 1.3
Calculate the surface wave magnitude M_(S) for an earthquake with I_(M?) of VII , in an
area that can be approximated to a circle with radius 20 km for a site at the
borders of the given isoseismal. This site is located in the Western United States,
but you may use the equation given below. Compare the ensuing value with the
estimates from relationships with other magnitude scales. Calculate the fault
surface displacements. Assume that the fault mechanism is normal faulting.
M_(s)=-1.10+0.62I_(i)+1.30*10^(-3)r_(i)+1.62log(r_(i))