Download CFM-R 3.0, a rectilinear. simplified version of the CFM.
There are three version:
a) tsurfs with 4 borderstones (.ts);
b) name and 4 corner points at variable depth (.4cvd);
c) name and the 2 upper and lower points at an averaged constant depth (.4cad).
Download the cfm-r tsurfs: cfm-r-3.0.ts
Download the dip-depth file with variable corner points: cfm-r-3.0.4cvd
Download the dip-depth file with constant corner points: cfm-r-3.0.4cad
Each fault was subdivided into 5km or longer patches. The downdip sides of each patch are parallel to each other and perpendicular to the strike line (the fault trace in map view). The lower corner points are at the depth of the seismogenic thickness surface used in CFM. Coordinates in all files are given in the UTM zone 11, NAD 27 projection.
For each patch a triangulated gocad tsurf description exists. This description includes markers for the vertices of the corner points. In a first processing step the vertex locations of all corner points for each patch along with the name of the patch were extracted from the gocad description. The vertices were then sorted according to depth. The lower and upper corner point pair were also reordered according to their easting. This sorting results in most cases in the downdip sides of each polygon being defined by the 1st and 3rd, and 2nd and 4th point. At this point both the upper and lower pair has variable depths for each corner. An additional calculation averages these depths for each pair but does not modify the easting and northing. Finally the dip for each side is calculated given the corner point sorting.
The .4cad and .4cvd files are ASCII files with the name, dip, depth and four corners in one
line for each fault patch.
The data are in in this order:
name dipA dipB depthA depthB topA topB xdA xdB xtA xtB ydA ydB ytA ytB
where
name: gocad name of fault
dipA: dip at side A
dipB: dip at side B
depthA: depth at side A
depthB: depth at side B
topA: top elevation at side A
topB: top elevation at side B
xdA: X coordinate (x) at deep (d) corner of side A (A)
xdB: X coordinate (x) at deep (d) corner of side B (B)
xtA: X coordinate (x) at top (t) corner of side A (A)
xtB: X coordinate (x) at top (t) corner of side B (B)
ydA: X coordinate (y) at deep (d) corner of side A (A)
ydB: X coordinate (y) at deep (d) corner of side B (B)
ytA: X coordinate (y) at top (t) corner of side A (A)
ytB: X coordinate (y) at top (t) corner of side B (B)
