Released

Dataset

Analysis of Detections by the Earthquake Network App between 2017-12-15 and 2020-01-31

Cite as:

Steed, Robert; Bossu, Remy; Finazzi, Francesco; Bondár, István; Fallou, Laure (2021): Analysis of Detections by the Earthquake Network App between 2017-12-15 and 2020-01-31. V. 0.9. GFZ Data Services. https://doi.org/10.5880/fidgeo.2021.007

Status

I N R E V I E W : Steed, Robert; Bossu, Remy; Finazzi, Francesco; Bondár, István; Fallou, Laure (2021): Analysis of Detections by the Earthquake Network App between 2017-12-15 and 2020-01-31. V. 0.9. GFZ Data Services. https://doi.org/10.5880/fidgeo.2021.007

Abstract

The 'Earthquake Network’ (EQN) is an app which detects earthquakes by creating an ad-hoc network of smartphones' accelerometer sensors and provides early warnings for earthquakes via the same smartphone app. Detections are not due to individual smartphone measurements but due to near-simultaneous trigger signals from clusters of smartphones running the app. Therefore detections are normally located in the closest populated regions to an earthquake's epicentre. These datasets compare sets of detections with the earthquake parameters published by seismic institutes in order to analyse the performance of the EQN network.

One dataset contains 550 detections made by EQN between 2017-12-15 and 2020-01-31 in Chile, USA and Italy. Wherever possible, each detection was associated with an earthquake from the parameter catalogue of each country's seismic institute (CSN for Chile, USGS for USA and INGV for Italy). Associations were carried out automatically but also checked manually.

The other dataset contains 134 detections from around the world that could be associated to earthquakes with magnitude ≥ M5 or magnitude ≥ M4.5 in Italy and the USA. There are 68 detections that are common to the first dataset. All detections were associated to parameters from the the USGS earthquake parameter catalogue for consistency.
2021_xxxx_steed-et-al_D1_usa_chl_ita.csv
2021_xxxx_steed-et-al_D2_mag_gt_4.5.csv

Methods

Earthquake parameters were retrieved from the seismic institutes via the FDSN protocol. The two datasets are encoded in csv files using ',' delimiters and with headers on the first row. Additional material is included to explain the contents of each column.

Authors

Steed, Robert;European-Mediterranean Seismological Centre (EMSC)
Bossu, Remy;European-Mediterranean Seismological Centre (EMSC)
Finazzi, Francesco;Department of Management, Information and Production Engineering, University of Bergamo, Dalmine, Italy
Bondár, István;ELKH Research Centre for Astronomy and Earth Sciences, Geodetic and Geophysical Institute, Budapest, Hungary
Fallou, Laure;European-Mediterranean Seismological Centre (EMSC)

Contact

Steed, Robert (Data Analyst and Researcher); European-Mediterranean Seismological Centre (EMSC); ➦
Bossu, Rémy (EMSC Secretary General); European-Mediterranean Seismological Centre (EMSC); ➦

Contributors

Bossu, Rémy

Funders

Horizon 2020 Framework Programme: TURNKEY (821046)

Keywords

Earthquake Network, earthquakes, strong motion, seismic waves, smartphone, citizen science, seismic surface waves, accelerometry, ground motion, geological process > seismic activity > earthquake, monitoring > seismic monitoring, safety > safety system > warning system > early warning system

GCMD Science Keywords

EARTH SCIENCE > HUMAN DIMENSIONS > NATURAL HAZARDS > EARTHQUAKES
EARTH SCIENCE > SOLID EARTH > TECTONICS > EARTHQUAKES > EARTHQUAKE OCCURRENCES
EARTH SCIENCE > SOLID EARTH > TECTONICS > EARTHQUAKES > SEISMIC PROFILE > SEISMIC SURFACE WAVES
In Situ Land-based Platforms > GEOPHYSICAL STATIONS/NETWORKS > FDSN
In Situ Land-based Platforms > GEOPHYSICAL STATIONS/NETWORKS > IRIS-GSN
In Situ Land-based Platforms > GEOPHYSICAL STATIONS/NETWORKS > SEISMOLOGICAL STATIONS

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        RS_Identifier
        code
        CharacterString: 10.1785/0220150127
        codeSpace
        CharacterString: DOI
        associationType
        DS_AssociationTypeCode (codeList=http://datacite.org/schema/kernel-4 codeListValue=Cites): Cites
      - language
        CharacterString: eng
      - characterSet
        MD_CharacterSetCode (codeListValue=utf8 codeList=http://www.isotc211.org/2005/resources/codeList.xml#MD_CharacterSetCode):
      - topicCategory
        MD_TopicCategoryCode: geoscientificInformation
      - extent
        EX_Extent
        description
        CharacterString: worldwide
        geographicElement
        EX_GeographicBoundingBox
        westBoundLongitude
        Decimal: -150
        eastBoundLongitude
        Decimal: 122
        southBoundLatitude
        Decimal: -36
        northBoundLatitude
        Decimal: 62
        temporalElement
        EX_TemporalExtent
        extent
        TimePeriod (xsi:type=gml:TimePeriodType gml:id=T614842ee441e5)
        beginPosition: 2017-12-15
        endPosition: 2020-01-31
  - distributionInfo
    - MD_Distribution
      - transferOptions
        MD_DigitalTransferOptions
        onLine
        CI_OnlineResource
        linkage
        URL: http://doi.org/10.5880/fidgeo.2021.007
        protocol
        CharacterString: WWW:LINK-1.0-http--link
        name
        CharacterString: Data Access - DOI
        description
        CharacterString: Data Access - DOI
        function
        CI_OnLineFunctionCode (codeList=http://www.isotc211.org/2005/resources/Codelist/gmxCodelists.xml#CI_OnLineFunctionCode codeListValue=http://www.isotc211.org/2005/resources/Codelist/gmxCodelists.xml#CI_OnLineFunctionCode_information): information
  - dataQualityInfo
    - DQ_DataQuality
      - scope
        DQ_Scope
        level
        MD_ScopeCode (codeListValue=dataset codeList=http://www.isotc211.org/2005/resources/codeList.xml#MD_ScopeCode):
      - lineage
        LI_Lineage
        statement
        CharacterString: Earthquake parameters were retrieved from the seismic institutes via the FDSN protocol. The two datasets are encoded in csv files using ',' delimiters and with headers on the first row. Additional material is included to explain the contents of each column.
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License: CC BY 4.0

End of moratorium: 2021-05-01

Dataset Description

Supplement to

https://dx.doi.org/10.1785/0220210180

Related Work

Cites

Continued by

Derived from