Application of Interferometric MASW to a 3D-3C Seismic Survey

Shaun Strong; Steve Hearn

doi:10.1071/ASEG2016ab289

25th International Conference and Exhibition – Interpreting the Past, Discovering the Future

ISSN: 2202-0586
E-ISSN:

oa Application of Interferometric MASW to a 3D-3C Seismic Survey
Authors Shaun Strong^a and Steve Hearn^a
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^a Velseis Pty LtdSchool of Earth Sciences, , UQ, Brisbane, , Australia
Publisher: Australian Society of Exploration Geophysicists
Source: ASEG Extended Abstracts, Volume 2016, Issue 25th International Conference and Exhibition – Interpreting the Past, Discovering the Future, Dec 2016, p. 1 - 6
DOI: https://doi.org/10.1071/ASEG2016ab289
- Published online: 01 Dec 2016

Abstract

Multichannel analysis of seismic surface waves (MASW) is well developed for shallow geotechnical applications. The technique has received much less attention in 3D reflection. The primary goal of this investigation is to develop an improved methodology for extracting S-wave receiver statics in 3D converted-wave (PS) reflection surveys.

The main challenge of using MASW in this context is the increased receiver spacing. To overcome this we need to include multiple sources in each dispersion analysis. Unfortunately, adding more sources increases the chance that the dispersion image will be degraded due to lateral near-surface variations. We present a methodology which incorporates interferometry into the MASW method (IMASW). This effectively repositions sources at receiver locations, reducing the region over which lateral variations can contribute to the data.

Application of this approach to a 3D-3C trial dataset provides an alternate approach for determining the S-wave receiver statics solution for converted-wave reflection surveys.

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2016-12-01

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References

Boiero, D., P. Bergamo, R. Bruno Rege, and L. V. Socco, 2011, Estimating surface-wave dispersion curves from 3D seismic acquisition schemes: Part 1 - 1D models: Geophysics, 76, G85-G93.
Hayashi, K., and H. Suzuki, 2004, CMP cross-correlation analysis of multi-channel surface-wave data: Exploration Geophysics, 35, 7-13.
Herrmann, R., and C. Ammon, 2004, Surface waves, receiver functions and crustal structure: Computer programs in seismology, version, 3.30.
Liner, C. L., 2012, Elements of seismic dispersion: A somewhat practical guide to frequency-dependent phenomena: Society of Exploration Geophysicists.
Luo, Y., J. Xia, J. Liu, Y. Xu, and Q. Liu, 2007, Research on Dispersion Curves of MASW: Presented at the 20th EEGS Symposium on the Application of Geophysics to Engineering and Environmental Problems.
Park, C. B., R. D. Miller, and J. Xia, 1999, Multichannel analysis of surface waves: Geophysics, 64, 800-808.
Roy, S., R. R. Stewart, and K. Al Dulaijan, 2010, S-wave velocity and statics from ground-roll inversion: The Leading Edge, 29, 1250-1257.
Strong, S., and S. Hearn, 2008, Multi-component seismicresolution analysis using finite-difference acquisition modelling: Exploration Geophysics, 39, 189-197.
Strong, S., and S. Hearn, 2011, Towards 3d, integrated p+ps seismic imaging of coal targets: Australian Coal Association Research Program (ACARP) Report, C17029.
Strong, S., and S. Hearn, 2016, Statics correction methods for 3D PS-wave seismic reflection: Exploration Geophysics (accepted for publication).

/content/journals/10.1071/ASEG2016ab289

Article Type: Research Article

Keyword(s): 3D; Interferometry; MASW; Statics

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