The distance-azimuth service will calculate the great-circle angular distance, azimuth, and backazimuth between two geographic coordinate pairs. All results are reported in degrees, with azimuth and backazimuth measured clockwise from North.
Below is a full list of service parameters and their usage.
/query?stalat=<DEGREES>&stalon=<DEGREES>&evtlat=<DEGREES>&evtlon=<DEGREES> (..) required parameter [..] optional parameter
Detailed Descriptions of each Query Parameter
|stalat||47.61||Required The latitude of this station in decimal degrees|
|stalon||-122.33||Required The longitude of this station in decimal degrees|
|evtlat||41.14||Required The latitude of this event in decimal degrees|
|evtlon||-74.0||Required The longitude of this event in decimal degrees|
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