6.2.8.1.4. eqcorrscan.utils.mag_calc.dist_calc¶

eqcorrscan.utils.mag_calc.dist_calc(loc1, loc2)[source]¶

Function to calculate the distance in km between two points.

Uses the haversine formula to calculate great circle distance at the Earth’s surface, then uses trig to include depth.

Parameters:	loc1 (tuple) – Tuple of lat, lon, depth (in decimal degrees and km) loc2 (tuple) – Tuple of lat, lon, depth (in decimal degrees and km)
Returns:	Distance between points in km.
Return type:	float