Open Access

Average shear-wave velocity structure of the Kamchatka peninsula from the dispersion of surface waves

  • N. M. Shapiro1Email author,
  • A. V. Gorbatov2,
  • E. Gordeev3 and
  • J. Dominguez1
Earth, Planets and Space201452:BF03351665

DOI: 10.1186/BF03351665

Received: 17 January 2000

Accepted: 27 July 2000

Published: 20 June 2014

Abstract

An average shear-wave velocity structure has been estimated for the path between the Kamchatka Isthmus and Petropavlovsk-Kamchatski. It is obtained from the Monte Carlo inversion of the Rayleigh and Love wave group velocity dispersion curves measured using broad-band seismograms of events in Northern Kamchatka recorded by the IRIS station PET in Petropavlovsk-Kamchatski. The Moho interface was found at a depth of 35±5 km and the Konrad one at 18±4 km. An important feature of the found structure is a low velocity in the upper mantle. This result is coherent with the recent and present-day volcanic activity in Kamchatka. Synthetic long period seismograms computed for the obtained structure are in good agreement with observed ones.