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Towards a more detailed seismic picture of the oceanic crust and mantle

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Abstract

A review is presented of current interpretation techniques in marine refraction seismology with particular emphasis on those features which are most useful in structural studies using ocean bottom seismometers. Travel time analysis techniques are discussed for both refraction and variable angle reflection profiles and are compared with systematic travel time inversion methods. Amplitude and waveform analysis techniques allow a more detailed velocity depth profile to be determined, and are illustrated for both surface and bottom receivers. The study of anisotropy and lateral variations in crustal structure may be usefully combined using delay time function methods but a detailed structural model also requires velocity-depth information. Signal processing techniques which are particularly useful for shear wave and long range propagation studies are also metioned. Structural studies using OBS' should lead to detailed knowledge of the oceanic crust and the P wave velocity distribution in the upper mantle.

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  1. Dept. of Geodesy and Geophysics, University of Cambridge, Madingley Road, CB3 OEZ, Cambridge, England

    B. L. N. Kennett

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Kennett, B.L.N. Towards a more detailed seismic picture of the oceanic crust and mantle. Mar Geophys Res 3, 7–42 (1977). https://doi.org/10.1007/BF00309792

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