obspy.taup.slowness_layer.bullen_radial_slowness
- bullen_radial_slowness(layer, p, radius_of_planet, check=True)[source]
Calculate time and distance increments of a spherical ray.
The time and distance (in radians) increments accumulated by a ray of spherical ray parameter p when passing through this layer. Note that this gives half of the true range and time increments since there will be both an upgoing and a downgoing path. Here we use the Mohorovicic or Bullen law: p=A*r^B
The
layerandpparameters must be either 0-D, or both of the same shape.- Parameters
layer (
ndarray, dtype =obspy.taup.helper_classes.SlownessLayer) – The layer(s) in which to calculate the increments.p (
ndarray, dtype =float) – The spherical ray paramater to use for calculation, in s/km.radius_of_planet (float) – The radius of the planet to use, in km.
check (bool) – Check that the calculated results are not invalid. This check may be disabled if the layers requested are expected not to include the specified ray.
- Returns
Time (in s) and distance (in rad) increments.
- Return type
tuple(
ndarray)