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    Australian national ocean bottom seismograph fleet advances conventional exploration

    Access Status
    Fulltext not available
    Authors
    Gavrilov, Alexander
    Goncharov, A.
    Malinowski, M.
    Seculic, D.
    Cooper, A.
    Chia, P.
    Paskos, G.
    Date
    2017
    Type
    Journal Article
    
    Metadata
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    Citation
    Gavrilov, A. and Goncharov, A. and Malinowski, M. and Seculic, D. and Cooper, A. and Chia, P. and Paskos, G. 2017. Australian national ocean bottom seismograph fleet advances conventional exploration. APPEA Journal. 57 (2): pp. 738-743.
    Source Title
    APPEA Journal
    DOI
    10.1071/AJ16138
    ISSN
    1326-4966
    School
    Centre for Marine Science and Technology
    URI
    http://hdl.handle.net/20.500.11937/59844
    Collection
    • Curtin Research Publications
    Abstract

    A fleet of new Australian ocean bottom seismographs (OBSs) have broadband frequency range, and similar instruments are available at only five or six institutions globally. These OBSs are multi-purpose devices able to record passive-source seismic data (earthquakes, ambient noise) as well as active-source (airgun generated) data and, at the same time, to monitor seismic survey noise and whale calls for environmentally responsible exploration. OBS data collected during commercial seismic surveys in Australian waters prove that it is possible to image the velocity distribution of the whole crust and upper mantle from analysis of both reflected and refracted phases generated by an industry-standard broadband airgun array. This means that valuable information on a regional scale can be obtained as a by-product of commercial seismic surveys. Three-component recording capability of OBSs allows analysis of S-waves in addition to the P-waves that are conventionally used in marine reflection surveys.

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