Changes between Version 4 and Version 5 of UCERF3FaultSystemSolutions

Timestamp:

May 5, 2014, 3:04:43 PM (10 years ago)

Author:

Kevin Milner

Comment:

--

UCERF3FaultSystemSolutions

@@ -34 +34 @@
 
 ''Note that this will not work for files greater than 4.1 GB (ZIP64 files). If you see an error relating to an invalid header, this is likely the problem.''
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+== Branch Averaged Solution ==
+
+These solutions are an approximate mean model for a single Fault Model. Each rupture rate, magnitude, and rake is the weighted mean of all 720 time independent logic tree branches for that Fault Model. This means that magnitude and rake variability is discarded for a single mean value. Additionally, fault geometries can vary between logic tree branches due to aseismicity factors - this solution uses aseismicity factors derived from branch averaged slip rates. They are useful for quick calculations, but can vary substantially from the true model especially near dipping faults with variable aseismicity among logic tree branches.
+
+Time independent hazard curves calculated with these solutions will differ from true mean (curves that were calculated for each logic tree branch independently then averaged) by 0-7%. Gridded seismicity contained in these solutions is weight averaged and captures the true mean perfectly.
+
+They can be downloaded here:
+
+* Fault Model 3.1: http://opensha.usc.edu/ftp/kmilner/ucerf3/2013_05_10-ucerf3p3-production-10runs/2013_05_10-ucerf3p3-production-10runs_COMPOUND_SOL_FM3_1_MEAN_BRANCH_AVG_SOL.zip
+* Fault Model 3.2: http://opensha.usc.edu/ftp/kmilner/ucerf3/2013_05_10-ucerf3p3-production-10runs/2013_05_10-ucerf3p3-production-10runs_COMPOUND_SOL_FM3_2_MEAN_BRANCH_AVG_SOL.zip