CVM-S - Revision history

Maechlin: Redirected page to CVM-S4

2016-01-28T06:21:39Z

Redirected page to CVM-S4

Maechlin at 06:20, 28 January 2016

2016-01-28T06:20:18Z

Maechlin: /* Download CVM-S */

2013-06-21T16:22:12Z

Download CVM-S

Maechlin at 16:21, 21 June 2013

2013-06-21T16:21:51Z

Maechlin: /* Download CVM-S */

2013-06-21T16:21:01Z

Download CVM-S

Maechlin: /* Download CVM-S */

2013-06-21T16:19:07Z

Download CVM-S

Maechlin: /* Download CVM-S */

2013-06-21T16:18:55Z

Download CVM-S

Maechlin: /* Download CVM-S */

2013-02-21T21:23:06Z

Download CVM-S

Maechlin at 23:14, 19 March 2011

2011-03-19T23:14:49Z

Maechlin at 06:26, 26 February 2011

2011-02-26T06:26:02Z

← Older revision		Revision as of 06:21, 28 January 2016
Line 1:		Line 1:
−	[[CVM-S4]]	+	#redirect [[CVM-S4]]
	CVM-SCEC (CVM-S), also known as SCEC CVM-4, is a 3D seismic velocity model. Current version is CVM-4 was released in 2006 and was originally posted for download from the SCEC Data Center [http://www.data.scec.org/3Dvelocity/ SCEC 3D Velocity Models Site].The purpose of the Three-Dimensional Community Velocity Model for Southern California is to provide a unified reference model for the several areas of research that depend of the subsurface velocity structure in their analysis. These include strong motion modeling, seismicity location, and tomographic velocity modeling. It is also hoped that the geologic community will find the basin models useful because they are based on structures and interfaces that are largely derived from geologic structure models. The deeper sediment velocities themselves are obtained from empirical relationships that take into account age of the formation and depth of burial. The coefficients of these relationships are calibrated to sonic logs taken from boreholes in the region. Shallow sediment velocities are taken from geotechnical borehole measurements. Hardrock velocities are based on tomographic studies.		CVM-SCEC (CVM-S), also known as SCEC CVM-4, is a 3D seismic velocity model. Current version is CVM-4 was released in 2006 and was originally posted for download from the SCEC Data Center [http://www.data.scec.org/3Dvelocity/ SCEC 3D Velocity Models Site].The purpose of the Three-Dimensional Community Velocity Model for Southern California is to provide a unified reference model for the several areas of research that depend of the subsurface velocity structure in their analysis. These include strong motion modeling, seismicity location, and tomographic velocity modeling. It is also hoped that the geologic community will find the basin models useful because they are based on structures and interfaces that are largely derived from geologic structure models. The deeper sediment velocities themselves are obtained from empirical relationships that take into account age of the formation and depth of burial. The coefficients of these relationships are calibrated to sonic logs taken from boreholes in the region. Shallow sediment velocities are taken from geotechnical borehole measurements. Hardrock velocities are based on tomographic studies.

← Older revision		Revision as of 06:20, 28 January 2016
Line 1:		Line 1:
		+	[[CVM-S4]]
	CVM-SCEC (CVM-S), also known as SCEC CVM-4, is a 3D seismic velocity model. Current version is CVM-4 was released in 2006 and was originally posted for download from the SCEC Data Center [http://www.data.scec.org/3Dvelocity/ SCEC 3D Velocity Models Site].The purpose of the Three-Dimensional Community Velocity Model for Southern California is to provide a unified reference model for the several areas of research that depend of the subsurface velocity structure in their analysis. These include strong motion modeling, seismicity location, and tomographic velocity modeling. It is also hoped that the geologic community will find the basin models useful because they are based on structures and interfaces that are largely derived from geologic structure models. The deeper sediment velocities themselves are obtained from empirical relationships that take into account age of the formation and depth of burial. The coefficients of these relationships are calibrated to sonic logs taken from boreholes in the region. Shallow sediment velocities are taken from geotechnical borehole measurements. Hardrock velocities are based on tomographic studies.		CVM-SCEC (CVM-S), also known as SCEC CVM-4, is a 3D seismic velocity model. Current version is CVM-4 was released in 2006 and was originally posted for download from the SCEC Data Center [http://www.data.scec.org/3Dvelocity/ SCEC 3D Velocity Models Site].The purpose of the Three-Dimensional Community Velocity Model for Southern California is to provide a unified reference model for the several areas of research that depend of the subsurface velocity structure in their analysis. These include strong motion modeling, seismicity location, and tomographic velocity modeling. It is also hoped that the geologic community will find the basin models useful because they are based on structures and interfaces that are largely derived from geologic structure models. The deeper sediment velocities themselves are obtained from empirical relationships that take into account age of the formation and depth of burial. The coefficients of these relationships are calibrated to sonic logs taken from boreholes in the region. Shallow sediment velocities are taken from geotechnical borehole measurements. Hardrock velocities are based on tomographic studies.

@@ Line 17: / Line 17: @@
 == Download CVM-S ==
 The most recent CVM-S distribution is posted here:
-*SCEC CVM-S 11.11.0 (v4 with Graves/Ely/Small modifications
+*SCEC CVM-S 11.11.0 (v4 with Graves/Ely/Small modifications)
 **[http://hypocenter.usc.edu/research/cvms/11.11.0/cvms-11.11.0.tar.gz cvms-11.11.0.tar.gz (7Mb gz file)]
 **[http://hypocenter.usc.edu/research/cvms/11.11.0/cvms-11.11.0.tar.gz cvms-11.11.0.tar.gz.md5  (small txt file)]

← Older revision		Revision as of 16:21, 21 June 2013
Line 26:		Line 26:

	Kohler, M., H. Magistrale, and R. Clayton, 2003, Mantle heterogeneities and the SCEC three-dimensional seismic velocity model version 3, Bulletin Seismological Society of America 93, 757-774.*		Kohler, M., H. Magistrale, and R. Clayton, 2003, Mantle heterogeneities and the SCEC three-dimensional seismic velocity model version 3, Bulletin Seismological Society of America 93, 757-774.*
		+
		+	== Related Links ==
		+	*[[UCVM]]
		+	*[[CVM-H]]

@@ Line 17: / Line 17: @@
 == Download CVM-S ==
 The most recent CVM-S distribution is posted here:
-*[http://hypocenter.usc.edu/research/cvms/11.11.0/cvms-11.11.0.tar.gz cvms-11.11.0.tar.gz  '''SCEC CVM-S 11.11.0 (v4 with Graves/Ely/Small modifications, 7 Mb)'']
+*SCEC CVM-S 11.11.0 (v4 with Graves/Ely/Small modifications
-This version of CVM-S contains all known bug fixes for CVM-S. We recommend upgrading to this version if you are using an earlier version of the code. Details on bugfixes can be found in the README.
+The version of CVM-S contains all known bug fixes for CVM-S. We recommend upgrading to this version if you are using an earlier version of the code. Details on bugfixes can be found in the README.
 == References ==
 Kohler, M., H. Magistrale, and R. Clayton, 2003, Mantle heterogeneities and the SCEC three-dimensional seismic velocity model version 3, Bulletin Seismological Society of America 93, 757-774.*

@@ Line 18: / Line 18: @@
 Most recent CVM-S distribution is posted on the CVM-H web site under the heading of Alternative Velocity Models. CVM-H is a more recent, alternative, southern California CVM with a recently released software distribution. When the latest, CVM-H was released, we also posted the "best available" version of CVM-S4.
 *[[CVM-H]]
+*[[Community Velocity Model]]
 == References ==
 Kohler, M., H. Magistrale, and R. Clayton, 2003, Mantle heterogeneities and the SCEC three-dimensional seismic velocity model version 3, Bulletin Seismological Society of America 93, 757-774.*

@@ Line 3: / Line 3: @@
 [[File:CVM-S4.png|256px|thumb|right|Fence diagram showing velocity variation across several profiles in southern California as returned by SCEC CVM-S4.]]
-The velocity models are a Fortran code and associated files that are downloaded, compiled, and run locally. The user queries the models by creating an input file of latitude, longitude, and depth values, and the model returns Vp, Vs, and density at each of those points. Some web based interfaces to handle model queries have been developed and are available from the SCEC Community Modeling Environment
+The velocity models are a Fortran code and associated files that are downloaded, compiled, and run locally. The user queries the models by creating an input file of latitude, longitude, and depth values, and the model returns Vp, Vs, and density at each of those points.
-The Community Velocity Model has been released in progressive versions. It is now in version 4. It is recommended to use version 4 over previous versions.
+The Community Velocity Model has been released in progressive versions. It is now in version 4. It is recommended to use version 4 over previous versions. A bug-fix version of CVM-S4 is available through a SCEC/CME web site or through the SCEC data center.
 '''Version 4'''
@@ Line 16: / Line 16: @@
 == Download CVM-S ==
-Most recent CVM-S distribution is posted on the CVM-H web site.
+Most recent CVM-S distribution is posted on the CVM-H web site under the heading of Alternative Velocity Models. CVM-H is a more recent, alternative, southern California CVM with a recently released software distribution. When the latest, CVM-H was released, we also posted the "best available" version of CVM-S4.
 *[[CVM-H]]

← Older revision		Revision as of 06:26, 26 February 2011
Line 1:		Line 1:
−	~~The most recent~~ version of CVM-S was released in ~~2002~~ and was originally posted for download from the SCEC Data Center [http://www.data.scec.org/3Dvelocity/ SCEC 3D Velocity Models Site].The purpose of the Three-Dimensional Community Velocity Model for Southern California is to provide a unified reference model for the several areas of research that depend of the subsurface velocity structure in their analysis. These include strong motion modeling, seismicity location, and tomographic velocity modeling. It is also hoped that the geologic community will find the basin models useful because they are based on structures and interfaces that are largely derived from geologic structure models. The deeper sediment velocities themselves are obtained from empirical relationships that take into account age of the formation and depth of burial. The coefficients of these relationships are calibrated to sonic logs taken from boreholes in the region. Shallow sediment velocities are taken from geotechnical borehole measurements. Hardrock velocities are based on tomographic studies.	+	CVM-SCEC (CVM-S), also known as SCEC CVM-4, is a 3D seismic velocity model. Current version is CVM-4 was released in 2006 and was originally posted for download from the SCEC Data Center [http://www.data.scec.org/3Dvelocity/ SCEC 3D Velocity Models Site].The purpose of the Three-Dimensional Community Velocity Model for Southern California is to provide a unified reference model for the several areas of research that depend of the subsurface velocity structure in their analysis. These include strong motion modeling, seismicity location, and tomographic velocity modeling. It is also hoped that the geologic community will find the basin models useful because they are based on structures and interfaces that are largely derived from geologic structure models. The deeper sediment velocities themselves are obtained from empirical relationships that take into account age of the formation and depth of burial. The coefficients of these relationships are calibrated to sonic logs taken from boreholes in the region. Shallow sediment velocities are taken from geotechnical borehole measurements. Hardrock velocities are based on tomographic studies.

	[[File:CVM-S4.png\|256px\|thumb\|right\|Fence diagram showing velocity variation across several profiles in southern California as returned by SCEC CVM-S4.]]		[[File:CVM-S4.png\|256px\|thumb\|right\|Fence diagram showing velocity variation across several profiles in southern California as returned by SCEC CVM-S4.]]