Receivers in a seismological context.
Specifically this means:
- Coordinates are specified in latitude, longitude, and
burial beneath the surface.
- The rotation matrices will be set so that the output of SalvusCompute will be
in ZNE (vertical, north, and east) which corresponds to most seismological
instruments.
All coordinates here are spherical coordinates. If your coordinates are
defined in a geodetic (ellipsoidal) reference system like WGS84, you need
to convert them before passing them to this function.
For 2D the latitude will ignored and only the longitude will be assumed. This
is the default polar coordinate system with:
x = r * cos(phi)
y = r * sin(phi)
phi is the longitude here.