const for kilometers per degree on the earth, 111.19
Type: number
Convert degrees into kilometers along the earth surface
(number)
degrees to convert
number
Convert kilometers into degrees along the earth surface
(number)
kilometers to convert
number
(number)
Latitude of first point (station) (+N, -S) in degrees
(number)
Longitude of first point(station) (+E, -W) in degrees
(number)
Latitude of second point (event)
(number)
Longitude of second point (event)
Returns a simple object (DistAzOutput) with:
delta => Great Circle Arc distance in degrees
az => Azimuth of pt. 1 wrt pt. 2 in degrees
baz => Azimuth of pt. 2 wrt pt. 1 in degrees
azimuth is if you stand at point 2 and measure angle between north and point 1. I.E. point 1 is the station and point 2 is the event.
DistAzOutput