EarthquakeData

EarthquakeData[loc]
gives all earthquake properties for the location corresponding to loc.

EarthquakeData[loc,mag]
restricts earthquakes returned to the magnitude range mag.

EarthquakeData[loc,mag,{start,end}]
gives earthquake data within the magnitude range mag during the time interval start to end.

EarthquakeData[loc,mag,{start,end},property]
gives a time series for the specific earthquake property for earthquakes within the magnitude range mag during the time interval start to end.

EarthquakeData[entity,property]
returns data for a specific earthquake.

Details and OptionsDetails and Options

  • 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:
  • 0UTC
    $TimeZonethe current time zone for your computer system
    zoffset 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

ExamplesExamplesopen allclose all

Basic Examples  (3)Basic Examples  (3)

Find historical earthquakes near a given location:

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Discover powerful earthquakes around the world:

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Explore the history of earthquakes for a region:

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Introduced in 2014
(10.0)