Parameter description for the 'event' service (v1.1.0) of 'http://service.iris.edu':
The service offers the following optional standard parameters:
    latitude (float)
        Specify the central latitude point for a radial search
    longitude (float)
        Specify the central longitude point for a radial search
    minradius (float)
        Specify minimum distance from the geographic point defined by latitude
        and longitude
    maxradius (float), Default value: 180.0
        Specify maximum distance from the geographic point defined by latitude
        and longitude
    magnitudetype (str)
        type of Magnitude used to test minimum and maximum limits (case
        insensitive)
    includeallorigins (bool)
        Retrieve all origins or only the primary origin associated with each
        event in a catalog
    includeallmagnitudes (bool)
        Retrieve all magnitudes for the event, or only the primary magnitude
        from within the catalog
    includearrivals (bool)
        Specify if phase arrivals should be included
    eventid (str)
        Retrieve an event based on the unique ID numbers assigned by the IRIS
        DMC
    limit (int)
        Limit the results to the specified number of events
    offset (int), Default value: 1
        Return results starting at the event count specified
    catalog (str), Default value: NEIC+PDE
        Specify the catalog from which origins and magnitudes will be retrieved
    contributor (str)
        Limit to events contributed by a specified contributor
    updatedafter (UTCDateTime)
        Limit to events updated after the specified time
The service offers the following non-standard parameters:
    format (str), Default value: xml, Choices: xml, text
        Specify output format. This is an IRIS extension to the FDSN
        specification
    originid (str)
        Retrieve an event based on the unique origin ID numbers assigned by the
        IRIS DMC
Available catalogs: ANF, UofW, NEIC PDE, ISC, TEST, GCMT
Available contributors: NEIC PDE-W, ANF, University of Washington, GCMT-Q, NEIC PDE-Q, UNKNOWN, NEIC ALERT, ISC, NEIC PDE-M, NEIC COMCAT, GCMT
