Provided by: gmt-common_5.2.1+dfsg-3build1_all 
NAME
pscoupe - Plot cross-sections of focal mechanisms
SYNOPSIS
pscoupe [ files ] parameters region parameters [ [p|s]parameters ] [ color ] [ mode[args] ] [ color ] [
] [ [pen] ] [ ] [ ] [ ] [ ] [ <symbol><scale>[/d] ] [ n ] [ [just/dx/dy/][c|label] ] [ [level] ] [
pen ] [ x_offset ] [ y_offset ] [ cpt ] [ -ccopies ] [ -di<nodata> ] [ -h<headers> ] [ -i<flags> ] [
-:[i|o] ]
Note: No space is allowed between the option flag and the associated arguments.
DESCRIPTION
pscoupe reads data values from files [or standard input] and generates PostScript code that will plot
symbols, lines or polygons on a cross-section. Focal mechanisms may be specified and require additional
columns of data. The PostScript code is written to standard output.
Unless is used, new file is created with the new coordinates (x, y) and the mechanism (from lower focal
half-sphere for horizontal plane, to half-sphere behind a vertical plane). When the plane is not
horizontal, - north direction becomes upwards steepest descent direction of the plane (u) - east
direction becomes strike direction of the plane (s) - down direction (= north^east) becomes u^s Axis
angles are defined in the same way as in horizontal plane in the new system. Moment tensor (initially in
r, t, f system that is up, south, east) is defined in (-u^s, -u, s) system.
REQUIRED ARGUMENTS
table One or more ASCII (or binary, see -bi[ncols][type]) data table file(s) holding a number of data
columns. If no tables are given then we read from standard input.
-Jparameters (more ...)
Select map projection.
-R[unit]west/east/south/north[/zmin/zmax][r]
west, east, south, and north specify the region of interest, and you may specify them in decimal
degrees or in [+-]dd:mm[:ss.xxx][W|E|S|N] format. Append r if lower left and upper right map
coordinates are given instead of w/e/s/n. The two shorthands -Rg and -Rd stand for global domain
(0/360 and -180/+180 in longitude respectively, with -90/+90 in latitude). Alternatively for grid
creation, give Rcodelon/lat/nx/ny, where code is a 2-character combination of L, C, R (for left,
center, or right) and T, M, B for top, middle, or bottom. e.g., BL for lower left. This indicates
which point on a rectangular region the lon/lat coordinate refers to, and the grid dimensions nx
and ny with grid spacings via -I is used to create the corresponding region. Alternatively,
specify the name of an existing grid file and the -R settings (and grid spacing, if applicable)
are copied from the grid. Using -Runit expects projected (Cartesian) coordinates compatible with
chosen -J and we inversely project to determine actual rectangular geographic region. For
perspective view (-p), optionally append /zmin/zmax. In case of perspective view (-p), a z-range
(zmin, zmax) can be appended to indicate the third dimension. This needs to be done only when
using the -Jz option, not when using only the -p option. In the latter case a perspective view of
the plane is plotted, with no third dimension. If frame is defined from cross-section parameters
(see -A this option is not taken into account, but must be present.
-A selects the cross-section.
-Aalon1/lat1/lon2/lat2/dip/p_width/dmin/dmax[f]
lon and lat are the longitude and latitude of points 1 and 2 limiting the length of the
cross-section. dip is the dip of the plane on which the cross-section is made. p_width is
the width of the cross-section on each side of a vertical plane or above and under an
oblique plane. dmin and dmax are the distances min and max from horizontal plane, along
steepest descent direction. Add f to get the frame from the cross-section parameters.
-Ablon1/lat1/strike/p_length/dip/p_width/dmin/dmax[f]
lon1 and lat1 are the longitude and latitude of the beginning of the cross-section. strike
is the azimuth of the direction of the cross-section. p_length is the length along which
the cross-section is made. The other parameters are the same as for -Aa option.
-Acx1/y1/x2/y2/dip/p_width/dmin/dmax[f]
The same as -Aa option with x and y cartesian coordinates.
-Adx1/y1/strike/p_length/dip/p_width/dmin/dmax[f]
The same as -Ab option with x and y cartesian coordinates.
-S selects the meaning of the columns in the data file and the figure to be plotted.
-Sascale[/fontsize[/offset[u]]]
Focal mechanisms in Aki and Richards convention. scale adjusts the scaling of the radius of
the "beach ball", which will be proportional to the magnitude. The scale is the size for
magnitude = 5 in PROJ_LENGTH_UNIT (unless c, i, or p is appended to indicate that the size
information is in units of cm, inches, meters, or points, respectively). Use the -T option
to render the beach ball transparent by drawing only the nodal planes and the
circumference. The color or shade of the compressive quadrants can be specified with the -G
option. The color or shade of the extensive quadrants can be specified with the -E option.
Parameters are expected to be in the following columns:
1,2: longitude, latitude of event (-: option interchanges order)
3: depth of event in kilometers
4,5,6: strike, dip and rake
7: magnitude
8,9: not used; can be 0 0; allows use of the psmeca file format
10: text string to appear above the beach ball (default) or under (add u).
-Scscale
Focal mechanisms in Harvard CMT convention. scale adjusts the scaling of the radius of the
"beach ball", which will be proportional to the magnitude. The scale is the size for
magnitude = 5 (that is M0 = 4E+23 dynes-cm.) in PROJ_LENGTH_UNIT (unless c, i, or p is
appended to indicate that the size information is in units of cm, inches, meters, or
points, respectively). Use the -T option to render the beach ball transparent by drawing
only the nodal planes and the circumference. The color or shade of the compressive
quadrants can be specified with the -G option. The color or shade of the extensive
quadrants can be specified with the -E option. Parameters are expected to be in the
following columns:
1,2: longitude, latitude of event (-: option interchanges order)
3: depth of event in kilometers
4,5,6: strike, dip, and slip of plane 1
7,8,9: strike, dip, and slip of plane 2
10,11: mantissa and exponent of moment in dyne-cm (if magnitude is uses instead of
scalar moment, magnitude is in column 10 and 0 must be in column 11)
12,13: not used; can be 0 0; allows use of the psmeca file format
14: text string to appear above the beach ball (default) or under (add u).
-Spscale[/fontsize[/offset[u]]]
Focal mechanisms given with partial data on both planes. scale adjusts the scaling of the
radius of the "beach ball", which will be proportional to the magnitude. The scale is the
size for magnitude = 5 in PROJ_LENGTH_UNIT (unless c, i, or p is appended to indicate that
the size information is in units of cm, inches, meters, or points, respectively). The color
or shade of the compressive quadrants can be specified with the -G option. The color or
shade of the extensive quadrants can be specified with the -E option. Parameters are
expected to be in the following columns:
1,2: longitude, latitude of event (-: option interchanges order)
3: depth
4,5: strike, dip of plane 1
6: strike of plane 2
7: must be -1/+1 for a normal/inverse fault
8: magnitude
9,10: not used; can be 0 0; allows use of the psmeca file format
11: text string to appear above the beach ball (default) or under (add u).
-Sm|d|zscale[/fontsize[/offset[u]]]
Seismic moment tensor (Harvard CMT, with zero trace). scale adjusts the scaling of the
radius of the "beach ball", which will be proportional to the magnitude. The scale is the
size for magnitude = 5 (that is seismic scalar moment = 4E+23 dynes-cm) in PROJ_LENGTH_UNIT
(unless c, i, or p is appended to indicate that the size information is in units of cm,
inches, meters, or points, respectively). (-T0 option overlays best double couple
transparently.)
-Sdscale[/fontsize[/offset[u]]]
to plot the only double couple part of moment tensor.
-Szscale[/fontsize[/offset[u]]]
to plot anisotropic part of moment tensor (zero trace). The color or shade of the
compressive quadrants can be specified with the -G option. The color or shade of the
extensive quadrants can be specified with the -E option. Parameters are expected to be in
the following columns:
1,2: longitude, latitude of event (-: option interchanges order)
3: depth of event in kilometers
4,5,6,7,8,9:
mrr, mtt, mff, mrt, mrf, mtf in 10*exponent dynes-cm
10: exponent
11,12: Not used; can be 0 0; allows use of the psmeca file format
13: Text string to appear above the beach ball (default) or under (add u).
-Sxscale[/fontsize[/offset[u]]]
Principal axis. scale adjusts the scaling of the radius of the "beach ball", which will be
proportional to the magnitude. The scale is the size for magnitude = 5 (that is seismic
scalar moment = 4*10e+23 dynes-cm) in PROJ_LENGTH_UNIT (unless c, i, or p is appended to
indicate that the size information is in units of cm, inches, meters, or points,
respectively). (-T0 option overlays best double couple transparently.)
-Syscale[/fontsize[/offset[u]]]
to plot the only double couple part of moment tensor.
-Stscale[/fontsize[/offset[u]]]
to plot anisotropic part of moment tensor (zero trace). The color or shade of the
compressive quadrants can be specified with the -G option. The color or shade of the
extensive quadrants can be specified with the -E option. Parameters are expected to be in
the following columns:
1,2: longitude, latitude of event (-: option interchanges order)
3: depth of event in kilometers
4,5,6,7,8,9,10,11,12:
value (in 10*exponent dynes-cm), azimuth, plunge of the T, N, and P axes.
13: exponent
14,15: longitude, latitude at which to place beach ball. Entries in these columns are
necessary with the -C option. Using 0,0 in columns 9 and 10 will plot the beach
ball at the longitude, latitude given in columns 1 and 2. The -: option will
interchange the order of columns (1,2) and (9,10).
16: Text string to appear above the beach ball (optional).
OPTIONAL ARGUMENTS
-B[p|s]parameters (more ...)
Set map boundary intervals.
-Ecolor
Sets color or fill pattern for extensive quadrants [Default is white].
-Fmode[args]
Sets one or more attributes; repeatable. The various combinations are
-Fssymbol[size[/fontsize[/offset[u]]]
selects a symbol instead of mechanism. Choose from the following: (c) circle, (d) diamond, (i)
itriangle, (s) square, (t) triangle, (x) cross. size is the symbol size in PROJ_LENGTH_UNIT
(unless c, i, or p is appended to indicate that the size information is in units of cm, inches,
meters, or points, respectively). If size must be read, it must be in column 4 and the text string
will start in column 5. Parameters are expected to be in the following columns:
1,2: longitude, latitude of event (-: option interchanges order)
3: depth of event in kilometers
4: Text string to appear above the beach ball (default) or under (add u).
-Fa[size][/P_symbol[/T_symbol]]
Computes and plots P and T axes with symbols. Optionally specify size and (separate) P and T axis
symbols from the following: (c) circle, (d) diamond, (h) hexagon, (i) inverse triangle, (p) point,
(s) square, (t) triangle, (x) cross. [Default: 6p/cc]
-Fecolor
Sets the color or fill pattern for the T axis symbol. [Default as set by ]
-Fgcolor
Sets the color or fill pattern for the P axis symbol. [Default as set by ]
-Fp[pen]
Draws the P axis outline using current pen (see ), or sets pen attributes.
-Fr[color]
Draw a box behind the label (if any). [Default fill is white]
-Ft[pen]
Draws the T axis outline using current pen (see -W), or sets pen attributes.
-Gcolor
Sets color or fill pattern for compressional quadrants [Default is black].
-K (more ...)
Do not finalize the PostScript plot.
-L[pen]
Draws the "beach ball" outline using current pen (see ) or sets pen attributes.
-M Same size for any magnitude.
-N Does not skip symbols that fall outside map border [Default plots points inside border only].
-O (more ...)
Append to existing PostScript plot.
-P (more ...)
Select "Portrait" plot orientation.
-Q Suppress the production of files with cross-section and mechanism information.
-T[num_of_planes]
Plots the nodal planes and outlines the bubble which is transparent. If num_of_planes is 0: both
nodal planes are plotted; 1: only the first nodal plane is plotted; 2: only the second nodal plane
is plotted [Default: 0].
-U[just/dx/dy/][c|label] (more ...)
Draw GMT time stamp logo on plot.
-V[level] (more ...)
Select verbosity level [c].
-W[-|+][pen][attr] (more ...)
set pen attributes for text string or default pen attributes for fault plane edges. [Defaults:
width = default, color = black, style = solid].
-X[a|c|f|r][x-shift[u]]
-Y[a|c|f|r][y-shift[u]] (more ...)
Shift plot origin.
-Zcpt Give a CPT file and let compressive part color be determined by the z-value in the third column.
-ccopies (more ...)
Specify number of plot copies [Default is 1].
-dinodata (more ...)
Replace input columns that equal nodata with NaN.
-h[i|o][n][+c][+d][+rremark][+rtitle] (more ...)
Skip or produce header record(s).
-icols[l][sscale][ooffset][,...] (more ...)
Select input columns (0 is first column).
-:[i|o] (more ...)
Swap 1st and 2nd column on input and/or output.
-^ or just -
Print a short message about the syntax of the command, then exits (NOTE: on Windows use just -).
-+ or just +
Print an extensive usage (help) message, including the explanation of any module-specific option
(but not the GMT common options), then exits.
-? or no arguments
Print a complete usage (help) message, including the explanation of options, then exits.
--version
Print GMT version and exit.
--show-datadir
Print full path to GMT share directory and exit.
SEE ALSO
psmeca, psvelo, pspolar, gmt, psbasemap, psxy
REFERENCES
Bomford, G., Geodesy, 4th ed., Oxford University Press, 1980.
Aki, K. and P. Richards, Quantitative Seismology, Freeman, 1980.
F. A. Dahlen and Jeroen Tromp, Theoretical Seismology, Princeton, 1998, p.167. Definition of scalar
moment.
Cliff Frohlich, Cliff's Nodes Concerning Plotting Nodal Lines for P, Sh and Sv
Seismological Research Letters, Volume 67, Number 1, January-February, 1996
Thorne Lay, Terry C. Wallace, Modern Global Seismology, Academic Press, 1995, p.384.
W.H. Press, S.A. Teukolsky, W.T. Vetterling, B.P. Flannery, Numerical Recipes in C, Cambridge University
press (routine jacobi)
AUTHOR
Genevieve Patau, Laboratory of Seismogenesis <http://www.ipgp.fr/rech/sismogenese/>, Institut de Physique du Globe de Paris, Departement de Sismologie, Paris, France
COPYRIGHT
2015, P. Wessel, W. H. F. Smith, R. Scharroo, J. Luis, and F. Wobbe