A novel measurement of the surface wave dispersion with high and adjustable resolution: Multi-channel nonlinear signal comparison

Hu H., ŞENKAYA M., Zheng Y.

JOURNAL OF APPLIED GEOPHYSICS, vol.160, pp.236-241, 2019 (SCI-Expanded) identifier identifier

  • Publication Type: Article / Article
  • Volume: 160
  • Publication Date: 2019
  • Doi Number: 10.1016/j.jappgeo.2018.11.015
  • Journal Name: JOURNAL OF APPLIED GEOPHYSICS
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Page Numbers: pp.236-241
  • Keywords: Multi-channel, High resolution, Dispersion measurement, Surface-wave inversion, PHASE-VELOCITY, UPPER-MANTLE, BOREHOLE, PROPAGATION, TOMOGRAPHY, MODELS, ENERGY
  • Bursa Uludag University Affiliated: No

Abstract

Dispersion measurement of surface-waves is critical for utilizing surface-waves. However, the traditional dispersion measurements of multi-channel seismic data are usually based on linear signal comparison and achieve a low resolution at low frequencies. To improve the accuracy of surface-wave dispersion measurement for multi-channel seismic data, we propose a novel measurement that can produce a high and adjustable resolution among a wide detected frequency range. This measurement is based on a nonlinear signal comparison using multi-channel seismic data. We evaluated the performance of this proposed multi-channel nonlinear signal comparison (MNLSC) on several datasets: one synthetic shotgather containing only surface waves, one synthetic shotgather with full elastic waves, and one field shotgather. These examples show that the MNLSC is promising to be a reliable and effective tool for measuring the surface dispersion from the multi-channel seismic data. (C) 2018 Elsevier B.V. All rights reserved.