• Preliminary results from very long period data collected by a broad band digital seismic station

    • Fulltext


        Click here to view fulltext PDF

      Permanent link:

    • Keywords


      Broad band; surface waves; group velocity; phase velocity

    • Abstract


      Preliminary analysis of seismograms recorded by a wide band high dynamic range digital seismograph installed under a collaborative research programme between IPG, Paris and NGRI, Hyderabad, indicates that the crust and upper mantle structure below the Indian continent are characterized by high velocity up to a depth of 500 km. Both the group and phase velocities in the period range of 100–350s are found to be faster by 3–4% and 1–3% respectively compared with global models such as the preliminary reference earth model.

    • Author Affiliations


      C V Ramakrishna Rao1 V K Gaur2

      1. National Geophysical Research Institute, Hyderabad - 500 007, India
      2. Department of Ocean Development, Lodi Road, New Delhi - 110 003, India
    • Dates

  • Journal of Earth System Science | News

    • Editorial Note on Continuous Article Publication

      Posted on July 25, 2019

      Click here for Editorial Note on CAP Mode

© 2021-2022 Indian Academy of Sciences, Bengaluru.