This function calculates the p-value for the Utsu's test from 2 values of b and 2 sample sizes.
Usage
utcomp(b1, n1, b2, n2)
Arguments
b1
b-value from the first sample
n1
size of the first sample (number of data above or equal to the threshold magnitude in the first data set)
b2
b-value from the second sample
n2
size of the second sample (number of data above or equal to the threshold magnitude in the second data set)
Value
utcomp returns the p-value of the Utsu's test for the comparison of 2 b-values.
Details
The formula is given in Utsu's (1992, 1999).
References
Utsu, T. (1992) Introduction to seismicity, Surijishingaku (Mathematical Seismology), Inst. Statis. Math, 34, (VII), 139-157, (in Japanese).
Utsu, T. (1999) Representation and analysis of the earthquake size distribution: a historical review and some new approaches, Pure appl. Geophys., 155, 509-535