Program: MKLSEPIDISTV
mklsepidistv.............vectorized epicentral distance from coordinates
call: delta=mklsepidistv(elon,elat,slon,slat);
elon: (numeric) [deg]
epicenter longitude
elat: (nmeric) [deg]
epicenter latitude
slon: (numeric) [deg]
station longitude
slat: (numeric) [deg]
station latitude
ELAT and ELON may be vectors or matrices representing many
epicenters. They have to be of equal size then.
All coordinates in degrees, positive to the north and east, respectively.
Valid for spherical planets.
result: delta: epicentral distance, in degrees
after formula 4.4.1 in Lay/Wallace's book "Modern Global Seismology"
Martin Knapmeyer, 10.9.1996, vectorized 12.08.2002, 21.08.2002
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eof.