Rupture Variation Generator v5.2.3 Verification

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This page details the verification work with the Graves & Pitarka (2015) rupture variation generator, v5.2.3, as compared to the Graves & Pitarka (2014) rupture variation generator, v3.3.1.

Hazard Curves

Below are hazard curves for a 0.5 Hz CyberShake run, comparing v3.3.1 (black) and v5.2.3 (blue) at 3, 5, and 10 sec, for SBSM and USC.

Site 3 sec 5 sec 10 sec
SBSM
v3.3.1 (black) vs v5.2.3 (blue)
v3.3.1 (black) vs v5.2.3 (blue)
v3.3.1 (black) vs v5.2.3 (blue)
USC
v3.3.1 (black) vs v5.2.3 (blue)
v3.3.1 (black) vs v5.2.3 (blue)
v3.3.1 (black) vs v5.2.3 (blue)

GMPE Scatter Plots

Below are GMPE scatter plots for v3.3.1 (G&P 2014) and v5.2.3 (G&P 2015) runs, for SBSM and USC at 3, 5, and 10 sec.

Site/Rupture Generator 3s, 6<M<7, dist<70km 5s, 6<M<7, dist<70km 10s, 6<M<7, dist<70km
SBSM, G&P 2014
SBSM mag6to7 dist0to70 3s run4683.png
SBSM mag6to7 dist0to70 5s run4683.png
SBSM mag6to7 dist0to70 10s run4683.png
SBSM, G&P 2015
SBSM mag6to7 dist0to70 3s run4686.png
SBSM mag6to7 dist0to70 5s run4686.png
SBSM mag6to7 dist0to70 10s run4686.png
USC, G&P 2014
USC mag6to7 dist0to70 3s run4681.png
USC mag6to7 dist0to70 5s run4681.png
USC mag6to7 dist0to70 10s run4681.png
USC, G&P 2015
USC mag6to7 dist0to70 3s run4685.png
USC mag6to7 dist0to70 5s run4685.png
USC mag6to7 dist0to70 10s run4685.png

CyberShake vs CyberShake Scatter Plots

Below are CyberShake vs CyberShake scatter plots for v3.3.1 (x axis, G&P 2014) and v5.2.3 (y axis, G&P 2015) runs, for SBSM and USC at 3, 5, and 10 sec.

Site/Rupture Generator 3s, 6<M<7, dist<70km 5s, 6<M<7, dist<70km 10s, 6<M<7, dist<70km
SBSM
SBSM mag6to7 dist0to70 3s run4683 vs 4686.png
SBSM mag6to7 dist0to70 5s run4683 vs 4686.png
SBSM mag6to7 dist0to70 10s run4683 vs 4686.png
USC
USC mag6to7 dist0to70 3s run4681 vs 4685.png
USC mag6to7 dist0to70 5s run4681 vs 4685.png
USC mag6to7 dist0to70 10s run4681 vs 4685.png

Comparison of small events for USC

Below is a comparison of source 145, rupture 2 (M6.15) for USC, with G&P 2014 and 2015.

Seismogram plot:

Seismogram USC s145 r2 rv7 4681v4685.png

PSA plot:

PeakVals USC s145 r2 rv7 4681v4685.png

The two SRFs are available here (G&P 2014, v3.3.1) and here (G&P 2015, v5.2.3).


Below is a comparison of source 143, rupture 2 (M6.15) for USC, with G&P 2014 and 2015.

Seismogram plot:

Seismogram USC s143 r2 rv7 4681v4685.png

PSA plot:

PeakVals USC s143 r2 rv7 4681v4685.png

The two SRFs are available here (G&P 2014, v3.3.1) and here (G&P 2015, v5.2.3).

Comparison of source 115, rupture 6

To dig in deeper, I selected a single event (source 115, rupture 6, rupture variation 138).

Below are v3.3.1 and v5.2.3 plots for this event. Note that even though both events have shypo=27.0, dhypo=12.5, the v3.3.1 hypocenter is at (-116.37060, 33.33710, 2.78240) while the v5.2.3 hypocenter is at (-116.43904, 33.39450, 9.38238).

Plot of v3.3.1 realization
Plot of v5.2.3 realization

A plot comparing the generated seismograms for both versions:

Plot comparing seismograms for src=115, rup=6, rup var=138, for v3.3.1 and v5.2.3.


We repeated this for the two rupture variations which most closely match hypocenters, v3.3.1 rupture variation 172 and v5.2.3 rupture variation 117 (hypocenters ~0.2 km apart):

Plot comparing seismograms for src=115, rup=6, with rupture variation 172 for v3.3.1 and rupture variation 117 for v5.2.3.
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