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faultplane

fault plane projection on focal sphere

Description

given azimuth and dip of fault mechanism, calculate and plot the fault plane.

Usage

faultplane(az, dip, col = par("col"), PLOT = TRUE, UP = FALSE)

Arguments

az

degrees, strike of the plane (NOT down dip azimuth)
dip

degrees, dip from horizontal
col

color for line
PLOT

option for adding to plot
UP

upper or lower hemisphere

Details

Azimuth is the strike in degrees, not the down dip azimuth as described in other routines.

Value

list of points along fault plane

x

coordinates on focal sphere
y

coordinates on focal sphere

Author(s)

Jonathan M. Lees <jonathan.lees@unc.edu>

See Also

Beachfoc

Examples

gcol='black'
border='black'
ndiv=36
phi = seq(0,2*pi, by=2*pi/ndiv);
  x = cos(phi);
  y = sin(phi);

plot(x,y, type='n', asp=1)
  lines(x,y, col=border)
  lines(c(-1,1), c(0,0), col=gcol)
  lines(c(0,0), c(-1,1), col=gcol)

faultplane(65, 34)
RFOC

Graphics for Spherical Distributions and Earthquake Focal Mechanisms

v3.4-6
GPL (>= 2)
Authors
Jonathan M. Lees [aut, cre], Keehoon Kim [ctb]
Initial release
2018-01-17

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