Evaluating the reliability of phones as seismic monitoring instruments

Shideh Dashti, Jonathan Bray, Jack Reilly, Steven Glaser, Alexandre Bayen, Mari Ervasti

    Research output: Contribution to journalArticleScientificpeer-review

    22 Citations (Scopus)

    Abstract

    Emergency responders must "see" the effects of an earthquake clearly and rapidly for effective response. This project is a novel use of cell phone and information technology to measure ground motion intensity parameters. The phone sensor, however, is an imperfect device and has a limited operational range. Thus, shake table tests were performed to evaluate their reliability as seismic monitoring instruments. Representative handheld devices, either rigidly connected to the table or free to move, measured shaking intensity parameters well. Bias in 5%-damped spectral accelerations measured by phones was less than 0.05 and 0.2 [log(g)] during 1-D and 3-D shaking in frequencies ranging from 1 to 10 Hz. They did tend to overestimate the Arias Intensity, but this error declined for stronger motions with larger signal to noise ratios. With these ubiquitous measurement devices, a more accurate and rapid portrayal of the damage distribution during an earthquake can be provided.
    Original languageEnglish
    Pages (from-to)721-742
    Number of pages22
    JournalEarthquake Spectra
    Volume30
    Issue number2
    DOIs
    Publication statusPublished - 2014
    MoE publication typeA1 Journal article-refereed

    Fingerprint

    Earthquakes
    shaking
    earthquake
    Monitoring
    strong motion
    earthquakes
    information technology
    signal-to-noise ratio
    ground motion
    Information technology
    Signal to noise ratio
    transponders
    emergencies
    sensor
    damage
    Sensors
    signal to noise ratios
    sensors
    cells
    parameter

    Cite this

    Dashti, Shideh ; Bray, Jonathan ; Reilly, Jack ; Glaser, Steven ; Bayen, Alexandre ; Ervasti, Mari. / Evaluating the reliability of phones as seismic monitoring instruments. In: Earthquake Spectra. 2014 ; Vol. 30, No. 2. pp. 721-742.
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    abstract = "Emergency responders must {"}see{"} the effects of an earthquake clearly and rapidly for effective response. This project is a novel use of cell phone and information technology to measure ground motion intensity parameters. The phone sensor, however, is an imperfect device and has a limited operational range. Thus, shake table tests were performed to evaluate their reliability as seismic monitoring instruments. Representative handheld devices, either rigidly connected to the table or free to move, measured shaking intensity parameters well. Bias in 5{\%}-damped spectral accelerations measured by phones was less than 0.05 and 0.2 [log(g)] during 1-D and 3-D shaking in frequencies ranging from 1 to 10 Hz. They did tend to overestimate the Arias Intensity, but this error declined for stronger motions with larger signal to noise ratios. With these ubiquitous measurement devices, a more accurate and rapid portrayal of the damage distribution during an earthquake can be provided.",
    author = "Shideh Dashti and Jonathan Bray and Jack Reilly and Steven Glaser and Alexandre Bayen and Mari Ervasti",
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    Dashti, S, Bray, J, Reilly, J, Glaser, S, Bayen, A & Ervasti, M 2014, 'Evaluating the reliability of phones as seismic monitoring instruments', Earthquake Spectra, vol. 30, no. 2, pp. 721-742. https://doi.org/10.1193/091711EQS229M

    Evaluating the reliability of phones as seismic monitoring instruments. / Dashti, Shideh; Bray, Jonathan; Reilly, Jack; Glaser, Steven; Bayen, Alexandre; Ervasti, Mari.

    In: Earthquake Spectra, Vol. 30, No. 2, 2014, p. 721-742.

    Research output: Contribution to journalArticleScientificpeer-review

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    T1 - Evaluating the reliability of phones as seismic monitoring instruments

    AU - Dashti, Shideh

    AU - Bray, Jonathan

    AU - Reilly, Jack

    AU - Glaser, Steven

    AU - Bayen, Alexandre

    AU - Ervasti, Mari

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    PY - 2014

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