Stations

The GeoJSON features represent seismic stations in the GMP specification. Station metadata is included in the GeoJSON feature “properties” dictionary. Requited properties include:

type

Must be “Feature” (string; required).

geometry

A dictionary with the following keys (dictionary; required).

type

Must be “Point” (string; required).

coordinates

List of coordinates as floats (list; required).

properties

A dictionary to store station-level metadata that contains the following keys (dictionary; required):

network_code

The FSDN network code (string; required).

station_code

FDSN station code (string; required).

name

Station name (string; optional).

streams

A list of dictionaries, one for each stream at this station. (list; required).

structure_reference_orientation

Reference for the structural coordinate system with respect to geographic north. Equivalent to COSMOS integer 21 (int; optional)

Note

“depth” in the station geometry coordinates array is defined as meters positive from the WGS84 datum. This conforms with GEOJSON standard, but defiates from metadata convention.

Example:

{
    ...
    "features": [
        {
            "type": "Feature",
            "properties": {
                "network_code": "CI",
                "station_code": "CCC",
                "name": "Christmas Canyon China Lake",
                "streams": [
                    {
                        ...
                    },
                    ...
                ]
            },
            "geometry": {
                "type": "Point",
                "coordinates": [
                    -117.3645,
                    35.5249,
                    670.0
                ]
            }
        }
    ]
}