The authors compare the signal-to-noise ratios obtained on bottomed seismometers, bottomed hydrophones, and buried seismometers from near-surface explosions in the Ngendei Expedition. The data were recorded in 5.5-km-deep water in the south central Pacific Ocean with a triaxial borehole seismograph and four triaxial ocean-bottom seismographs having externally mounted hydrophones. At ranges less than 35 km, the data indicate that the ocean bottom seismometer is a superior signal detector than the ocean-bottom hydrophone, and that the subbottom seismometer is superior in performance to the ocean-bottom seismometer. Above 4 Hz, the seismometer appears to have a 10-dB signal-to-noise advantage over the hydrophone for surface explosions at ranges less than 30 km.


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    Title :

    Infrasonic seismic and acoustic measurements in the deep ocean


    Additional title:

    Seismische und akustische Messungen im Infraschallgebiet im tiefen Ozean


    Contributors:
    Adair, R.G. (author) / Orcutt, J.A. (author) / Farrell, W.E. (author)

    Published in:

    Publication date :

    1988


    Size :

    9 Seiten, 19 Quellen



    Type of media :

    Article (Journal)


    Type of material :

    Print


    Language :

    English




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