Grid Project: Strike Slip Benchmark

Grid Team Member:	Carl Gable
Grid Versions:	v01
Data Source:	Benchmark Definitions: http://www.geodynamics.org:8080/cig/workinggroups/eq/workarea/benchmarks/benchmark-strikeslip/description-ss
Delivered To:	SCEC Community
Date Completed:	July 2006


Close up view of variable resolution mesh. The finest cells have edge length of ~125m. The fault tip has increased resolution. The slip distribution is mapped onto fault nodes as a floating point attribute.	Cut away view of uniform resolution, 1000m mesh. The slip distribution is mapped onto fault nodes as a floating point attribute.

Purpose of Project

Build grids of various resolution (1000m, 500m, 250m, variable) for strike slip benchmark calculation.

Project Summary

Dimension:	3D
Grid Element Type:	tetrahedral
Grid Software Used:	LaGriT

	tet_1000m_res	tet_0500m_res	tet_0250m_res	tet_variable_refine
Number of Nodes:	15625	117649	912673	179978
Number of Elements:	82944	663552	4962216	1037548

Project Archive Location

Output files for calculations:

tet_0250m_res.gmv.gz
tet_0250m_res.inp.gz
tet_0250m_res.table.gz
tet_0250m_res_outside.zone
tar_0250all.tar.gz

tet_0500m_res.gmv.gz
tet_0500m_res.inp.gz
tet_0500m_res.table.gz
tet_0500m_res_outside.zone
tar_0500all.tar.gz

tet_1000m_res.gmv.gz
tet_1000m_res.inp.gz
tet_1000m_res.table.gz
tet_1000m_res_outside.zone
tar_1000all.tar.gz

tet_variable_refine.gmv.gz
tet_variable_refine.inp.gz
tet_variable_refine.table.gz
tet_variable_refine_outside.zone
tar_variableall.tar.gz

    123315569  tar_0250all.tar.gz
    15897375   tar_0500all.tar.gz
     1920735   tar_1000all.tar.gz
    24417609   tar_variableall.tar.gz

What is in the files?
*.gmv - this is a standard GMV file. Mostly for graphics if you use GMV to view grids. *.inp - this is an AVS format file of the node coordinate list and the tet connectivity. *.table - this is a table of node attributes for each mesh. The first column is the node number. The second column is a node attribute, 'if_fault'. It is 0 for nodes not on the fault plane, it is > 0 for nodes on the fault plane. The third column is a node attribute, 'slip', that is 1.0 and tapers to 0.0 according to the specifications of the benchmark description. The fourth column is a node attribute, 'top', = 1 if a top node, = -5 if not a top node The fifth column is a node attribute, 'bottom', = 2 if a bottom node, = -5 if not a bottom node The sixth column is a node attribute, 'left_w', = 3 if a left side node, = -5 if not a left side node The seventh column is a node attribute, 'right_e', = 5 if a right side node, = -5 if not a right side node The eight column is a node attribute, 'back_n', = 6 if a back side node, = -5 if not a back side node The ninth column is a node attribute, 'front_s', = 4 if a front side node, = -5 if not a front side node *.zone - this is the same information as provide in the *.table file for the top, bottom, left, ... except the list is not all nodes. There is a list of just top nodes (by node number), a list of just bottom nodes, etc. NOTE: For *.table and *.zone there are some nodes that appear in more than one list. For example a corner node may appear in the top,left and front list.

LaGriT Control Files to Build Mesh:

tet_uniform_grid_3_res.lgi
    identify_fault_nodes.mlgi

tet_octree_refine.lgi
    identify_fault_nodes.mlgi

Work Directory:

/scratch/ymp/gable/grid_gen/crustal_deformation/bm_strike_slip/ver_03

Images and Project Details

Grid Statistics

Gallery of Project Images

Grid Team Contacts

Carl Gable	gable -at- lanl -dot- gov	505-665-3533
Terry Miller	tamiller -at- lanl -dot- gov	505-667-8009