The propagation loss from a shallow underwater explosion to a buried vertically polarized seismometer over the frequency band between 3 and 15 Hz was measured during the 1983 Ngendei Experiment. The data was recorded in 5.5-km-deep water in the southwest Pacific with a triaxial borehole seismograph emplaced 50 m within the basaltic basement. It is found that the average power decays as r-3 (r is slant range) beyond 30 km and that the propagation loss is minimal between 6-9 Hz. At shorter ranges, the propagation loss is more complicated and exhibits a stronger frequency dependence. Power in the first water wave is estimated for both buried and ocean-bottom sensors. The ocean-bottom power is approximately 7 dB higher than that recorded by the buried sensor, and both exhibit similar decay rates.


    Zugriff

    Zugriff prüfen

    Verfügbarkeit in meiner Bibliothek prüfen

    Bestellung bei Subito €


    Exportieren, teilen und zitieren



    Titel :

    VLF propagation loss to a buried seismometer


    Weitere Titelangaben:

    Verluste bei der Ausbreitung von VLF-Schallwellen zu einem versenkten Seismographen


    Beteiligte:
    Sereno, T.J. (Autor:in) / Farrell, W.E. (Autor:in) / Orcutt, J.A. (Autor:in) / Adair, R.G. (Autor:in)

    Erschienen in:

    Erscheinungsdatum :

    1988


    Format / Umfang :

    9 Seiten, 17 Quellen



    Medientyp :

    Aufsatz (Zeitschrift)


    Format :

    Print


    Sprache :

    Englisch




    Vehicle weight estimates using a buried three-axis seismometer [3577-14]

    LeMond, J. E. / Gramann, R. A. | British Library Conference Proceedings | 1998


    SEAFLOOR SEISMOMETER BURIAL

    Wooding, F. B. / Peal, K. R. / Collins, J. A. | British Library Online Contents | 2001


    Micromechanisms for optimism seismometer

    Paulin, Nicolas / Dumas, Pierre / Pochard, Marc | NTRS | 1995


    In-situ Instruments – Micro Seismometer

    Yee, Karl / Toda, Risaku / Kedar, Sharon et al. | NTRS | 2019