Description
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 Usage
/query?stalat=<DEGREES>&stalon=<DEGREES>&evtlat=<DEGREES>&evtlon=<DEGREES> (..) required parameter [..] optional parameter
Sample Queries
- /irisws/distaz/1/query?stalat=0.0&stalon=0.0&evtlat=15.0&evtlon=0.0
- /irisws/distaz/1/query?stalat=45&stalon=-120&evtlat=30.0&evtlon=-100.0
Detailed Descriptions of each Query Parameter
| parameters | examples | description |
|---|---|---|
| Station Coordinates | ||
| stalat | 47.61 | Required The latitude of this station in decimal degrees |
| stalon | -122.33 | Required The longitude of this station in decimal degrees |
| Event Coordinates | ||
| evtlat | 41.14 | Required The latitude of this event in decimal degrees |
| evtlon | -74.0 | Required The longitude of this event in decimal degrees |
WADL
Retrieve the WADL associated with this service:
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