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Exercise

Quantification of the b-values

Based on the plot you generated in the previous exercise, you can safely use a completeness threshold of mt = 3. Using this threshold, compute b-values for the period between 1980 and 2009 and for 2010 through mid-2017. The function b_value() you wrote last chapter, which computes the b-value and confidence interval from a set of magnitudes and completeness threshold, is available in your namespace, as are the numpy arrays mags_pre and mags_post from the last exercise, and mt.

Instructions

100 XP
  • Compute the b-value and 95% confidence interval for earthquakes from 1980 through 2009 using 10,000 bootstrap replicates.
  • Compute the b-value and 95% confidence interval for earthquakes from 2010 through mid-2017 using 10,000 bootstrap replicates.
  • Hit 'Submit Answer' to print the results to the screen.