RSQSim Rupture Ground Motion Comparisons - Revision history

Kmilner at 18:20, 28 September 2017

2017-09-28T18:20:35Z

Kmilner at 18:18, 28 September 2017

2017-09-28T18:18:32Z

Kmilner at 18:17, 28 September 2017

2017-09-28T18:17:32Z

Kmilner at 18:16, 28 September 2017

2017-09-28T18:16:52Z

Kmilner at 18:14, 28 September 2017

2017-09-28T18:14:30Z

Kmilner at 18:11, 28 September 2017

2017-09-28T18:11:10Z

Kmilner: Created page with "== Broadband Platform Comparisons == This exercise uses the [https://github.com/SCECcode/bbp SCEC Broadband Platform] to compute seismograms and calculate RotD50 spectra from..."

2017-09-28T18:08:40Z

Created page with "== Broadband Platform Comparisons == This exercise uses the [https://github.com/SCECcode/bbp SCEC Broadband Platform] to compute seismograms and calculate RotD50 spectra from..."

New page

== Broadband Platform Comparisons ==
This exercise uses the [https://github.com/SCECcode/bbp SCEC Broadband Platform] to compute seismograms and calculate RotD50 spectra from RSQSim ruptures in a 1-D velocity structure. We then compute the RSQSim results with those from suites of kinematic rupture models with the same grid spacing, rupture surface, and hypocenter using the Graves & Pitarka (2015) rupture generator.

=== Implementation Notes ===
RSQsim ruptures can be on very complex surfaces, while the BBP requires a planar representation. For this comparison, we choose simple relatively planar ruptures on the Mojave section of the San Andreas, which should minimize these differences.

Also, Graves & Pitarka uses a regular grid, while the RSQSim models considered use a triangular mesh. I compute an effective grid spacing to use in RSQSim as the square root of the average area of all triangles included in the RSQSim rupture, so the sources in the GP kinematic ruptures will have the same area as the average RSQSim triangle.

=== Results ===
{|
! Catalog
! Spacing
! Rupture Image
! USC Spectra
! SBSM Spectra
|-
| rundir2194_long
| RSQSim: 1.32 km^2 triangles
GP: 1.16km x 1.16km square
| [[File:Event_136704.png|400px|thumb|M7.32]]
| [[File:USC_spectra_compare_event_136704.png|400px|thumb|USC]]
| [[File:SBSM_spectra_compare_event_136704.png|400px|thumb|San Bernardino]]
|}

← Older revision		Revision as of 18:20, 28 September 2017
Line 40:		Line 40:
	\| [[File:SBSM_spectra_compare_event_4099020.png\|400px\|thumb\|San Bernardino]]		\| [[File:SBSM_spectra_compare_event_4099020.png\|400px\|thumb\|San Bernardino]]
	\|}		\|}
		+
		+	== CyberShake Comparisons ==
		+	Scott Callaghan as also run Ruptupre 136704 (top, above) through previously computed CyberShake SGTs for a site in Wittier Narrows and compared to the most similar CyberShake Rupture Variation (also generated with GP 2015)
		+
		+	[[File:WNGC_3854_rsq136704_vs_s90_r4_rv20.png\|600px\|thumb\|CyberShake Seismograms]]

@@ Line 14: / Line 14: @@
 * Gray, area: 2.5-97.5% GP percentiles
 * Light gray, area: Min/max range across all GP simulations
 {|
 ! Catalog/Rup

@@ Line 23: / Line 23: @@
 | rundir2194_long
 Rupture 136704, M7.32
-SAF Mojave, S-E hypocenter
+SAF Mojave, S-E hypo
 | RSQSim: 1.32 km^2 triangles
 GP: 1.16km x 1.16km square
@@ Line 32: / Line 32: @@
 | JG UCERF3 Million Elements
 Rupture 4099020, M7.35
-SAF Mojave, S-E hypocenter
+SAF Mojave, S-E hypo
 | RSQSim: 0.23 km^2 triangles
 GP: 0.48km x 0.48km square

@@ Line 23: / Line 23: @@
 | rundir2194_long
 Rupture 136704, M7.32
 | RSQSim: 1.32 km^2 triangles
 GP: 1.16km x 1.16km square
@@ Line 31: / Line 32: @@
 | JG UCERF3 Million Elements
 Rupture 4099020, M7.35
 | RSQSim: 0.23 km^2 triangles
 GP: 0.48km x 0.48km square

@@ Line 15: / Line 15: @@
 * Light gray, area: Min/max range across all GP simulations
 {|
-! Catalog
+! Catalog/Rup
 ! Spacing
 ! Rupture Image
@@ Line 22: / Line 22: @@
 |-
 | rundir2194_long
 | RSQSim: 1.32 km^2 triangles
 GP: 1.16km x 1.16km square
@@ Line 27: / Line 28: @@
 | [[File:USC_spectra_compare_event_136704.png|400px|thumb|USC]]
 | [[File:SBSM_spectra_compare_event_136704.png|400px|thumb|San Bernardino]]
 |}