CyberShake Tapered Hypocenter Implementation - Revision history

Kmilner: /* Hazard Maps */

2015-06-16T23:48:41Z

Hazard Maps

2015-06-16T23:47:33Z

Hazard Maps

2015-06-16T23:47:00Z

2015-05-28T04:49:01Z

Tapered Hypocenter PDF

2015-05-28T02:07:46Z

2015-05-27T18:40:37Z

2015-05-27T17:27:48Z

Tapered Hypocenter PDF

2015-05-26T23:54:07Z

2015-05-26T23:46:17Z

2015-05-26T23:33:34Z

@@ Line 44: / Line 44: @@
 == Hazard Maps ==
-We can also calculate full hazard maps with this tapered hypocenter PDF. Results are shown below.
+We can also calculate full hazard maps with this tapered hypocenter PDF. Results are shown below, demonstrating the impact is small at the 2% in 50 year hazard level.
-[[File:CyberShake_15_4_Hypocenter_Map_Orig.png|400px|thumb|left|Original Uniform Hazard Map, 3s SA]]
+[[File:CyberShake_15_4_Hypocenter_Map_Orig.png|400px|thumb|left|Original Uniform Hazard Map, 3s SA, 2% in 50yr]]
-[[File:CyberShake_15_4_Hypocenter_Map_Mod.png|400px|thumb|left|Tapered Hypocenter Modified Map, 3s SA]]
+[[File:CyberShake_15_4_Hypocenter_Map_Mod.png|400px|thumb|left|Tapered Hypocenter Modified Map, 3s SA, 2% in 50yr]]
-[[File:CyberShake_15_4_Hypocenter_Map_Ratio.png|400px|thumb|left|Ratio Map, Tapered/Original, 3s SA]]
+[[File:CyberShake_15_4_Hypocenter_Map_Ratio.png|400px|thumb|left|Ratio Map, Tapered/Original, 3s SA, 2% in 50yr]]

@@ Line 46: / Line 46: @@
 We can also calculate full hazard maps with this tapered hypocenter PDF. Results are shown below.
-[[File:CyberShake_15_4_Hypocenter_Map_Orig.png|400px|thumb|left|Original Hazard Map, 3s SA]]
+[[File:CyberShake_15_4_Hypocenter_Map_Orig.png|400px|thumb|left|Original Uniform Hazard Map, 3s SA]]
 [[File:CyberShake_15_4_Hypocenter_Map_Mod.png|400px|thumb|left|Tapered Hypocenter Modified Map, 3s SA]]
 [[File:CyberShake_15_4_Hypocenter_Map_Ratio.png|400px|thumb|left|Ratio Map, Tapered/Original, 3s SA]]

← Older revision		Revision as of 23:47, 16 June 2015
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	[[File:CyberShake_15_4_Hypocenter_Curve_Comparison_STNI.png]]		[[File:CyberShake_15_4_Hypocenter_Curve_Comparison_STNI.png]]
		+
		+	== Hazard Maps ==
		+
		+	We can also calculate full hazard maps with this tapered hypocenter PDF. Results are shown below.
		+
		+	[[File:CyberShake_15_4_Hypocenter_Map_Orig.png\|400px\|thumb\|left\|Original Hazard Map, 3s SA]]
		+
		+	[[File:CyberShake_15_4_Hypocenter_Map_Mod.png\|400px\|thumb\|left\|Tapered Hypocenter Modified Map, 3s SA]]
		+
		+	[[File:CyberShake_15_4_Hypocenter_Map_Ratio.png\|400px\|thumb\|left\|Ratio Map, Tapered/Original, 3s SA]]

@@ Line 23: / Line 23: @@
 ! Source 90, Rup 3
 | [[File:CyberShake_15_4_rupture_hypos_90_3_das_ddw.png]]
 |}
 == Hazard Curves ==

@@ Line 15: / Line 15: @@
 We calculate the hypocenter location for each rupture variation with srf_gethypo. This returns the grid point with the earliest slip in the SRF file, which is not necessarily identical to the input hypocenter location in the rupture generator.
-We then calculate fractional distance along strike and down depth for each hypocenter and apply the taper. Here are the tapered hypocenters for an example SAF Mojave S rupture (Source 90, Rupture 0, M6.95). I chose this rupture as it is fairly planar with 90 degree dip. I then plot the hypocenters (colored circles) as a function of latitude and altitude (-depth). I am plotting the actual output of src_gethypo (lat,lon,depth) in this plot, before being mapped back to the rupture surface. You can see how even the "uniform" hypocenters show a large amount of scatter:
+We then calculate fractional distance along strike and down depth for each hypocenter and apply the taper. Here are the tapered hypocenters for two ruptures with identical surfaces but different magnitudes for a SAF Mojave S source (Source 90, Ruptures 0 & 3). I chose this source as it is fairly planar with 90 degree dip. I then plot the hypocenters (colored circles) as a function of distance along strike and distance down dip. I also plot the input hypocenters (gray circles) on the regular grid before they are perturbed. You can see how even the "uniform" hypocenters show a relatively large amount of scatter:
 == Hazard Curves ==

@@ Line 15: / Line 15: @@
 We calculate the hypocenter location for each rupture variation with srf_gethypo. This returns the grid point with the earliest slip in the SRF file, which is not necessarily identical to the input hypocenter location in the rupture generator.
-We then calculate fractional distance along strike and down depth for each hypocenter and apply the taper. Here are the tapered hypocenters for an example SAF Mojave S rupture, as a function of latitude. You can see how even the "uniform" hypocenters show a large amount of scatter:
+We then calculate fractional distance along strike and down depth for each hypocenter and apply the taper. Here are the tapered hypocenters for an example SAF Mojave S rupture. I chose this rupture as it is fairly planar with 90 degree dip. I then plot the hypocenters (colored circles) as a function of latitude and altitude (-depth). I am plotting the actual output of src_gethypo (lat,lon,depth) in this plot, before being mapped back to the rupture surface. You can see how even the "uniform" hypocenters show a large amount of scatter:
 [[File:CyberShake_15_4_Hypocenter_PDF_Mojave.png]]

← Older revision		Revision as of 23:46, 26 May 2015
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	[[File:CyberShake_15_4_Hypocenter_pdf_theoretical.png]]		[[File:CyberShake_15_4_Hypocenter_pdf_theoretical.png]]
		+
		+	We calculate the hypocenter location for each rupture variation with srf_gethypo. This returns the grid point with the earliest slip in the SRF file, which is not necessarily identical to the input hypocenter location in the rupture generator.
		+
		+	We then calculate fractional distance along strike and down depth for each hypocenter and apply the taper. Here are the tapered hypocenters for an example SAF Mojave S rupture:
		+
		+	[[File:CyberShake_15_4_Hypocenter_PDF_Mojave.png]]

← Older revision		Revision as of 23:33, 26 May 2015
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	Here is the resultant probability density function (PDF)		Here is the resultant probability density function (PDF)
−	[File:CyberShake_15_4_Hypocenter_pdf_theoretical.png]	+
		+	[[File:CyberShake_15_4_Hypocenter_pdf_theoretical.png]]