gives all earthquake properties for the location corresponding to loc.
restricts earthquakes returned to the magnitude range mag.
gives earthquake data within the magnitude range mag during the time interval start to end.
gives a time series for the specific earthquake property for earthquakes within the magnitude range mag during the time interval start to end.
returns data for a specific earthquake.
- The location loc can be given as a GeoPosition, , or . radius can be given as a Quantity or a number, in which case it is presumed to be in meters. If no radius is given a default value of 100 kilometers is used.
- The location can also be given as a region using Entity, GeoDisk, Polygon, and Rectangle specifications.
- The identifier entity for an earthquake is the same as the value of the property. It consists of the two-digit network code and the identification number for that earthquake. Not all earthquakes have a unique identifier.
- The magnitude mag can be specified as a single value designating a minimum magnitude or as to specify a range of values. Values are assumed to be in the moment magnitude scale or MMS.
- Dates can be specified as a DateObject or in DateList format.
- The option TimeZone->z allows different time zones to be assumed.
- The following settings can be used:
0 UTC $TimeZone the current time zone for your computer system z offset z for UTC
- EarthquakeData returns an Association using earthquake entities as keys. Individual properties are also keys in interior associations.
- Full properties of EarthquakeData can be obtained by using EarthquakeData["Properties"].
- Properties that can be specified include:
"AzimuthalGap" largest azimuthal gap between azimuthally adjacent stations "Depth" depth of the earthquake in kilometers "Identifier" network code and event identifier for the earthquake "Position" latitude, longitude of earthquake "Magnitude" magnitude of earthquake
- When properties are specified, EarthquakeData returns an EventSeries.
- Additonal properties accessible through general queries include:
"PositionMethod" method used to determine location "Magnitude" magnitude of earthquake "MagnitudeType" method used to measure magnitude "NumberOfPhases" number of P and S arrival time observations used to compute the hypocenter location "NumberOfStations" number of seismic stations that reported P and S arrival times for this earthquake