Integrated reflection and refraction processing of an ultra-shallow seismic survey

Alan Meulenbroek

doi:10.1071/ASEG2015ab032

24th International Geophysical Conference and Exhibition – Geophysics and Geology Together for Discovery

ISSN: 2202-0586
E-ISSN:

oa Integrated reflection and refraction processing of an ultra-shallow seismic survey
Authors Alan Meulenbroek^a
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^a Velseis Pty Ltd, and School of Earth Sciences, University of Queensland, PO Box 118, Sumner Park Queensland, , Australia, 4074, [email protected]
Publisher: Australian Society of Exploration Geophysicists
Source: ASEG Extended Abstracts, Volume 2015, Issue 24th International Geophysical Conference and Exhibition – Geophysics and Geology Together for Discovery, Dec 2015, p. 1 - 5
DOI: https://doi.org/10.1071/ASEG2015ab032
- Published online: 01 Dec 2015

Abstract

Velseis Pty Ltd acquired and processed an ultra-shallow seismic reflection survey designed to image targets with a depth of less than 50m, including the structure of the weathering layer. Several experimental sources were implemented, each with unique frequency and amplitude characteristics.

Reflection processing was not routine since the target of interest was the weathering zone itself. Due to this, a combination of reflection and refraction processing was used in order to develop an integrated image and interpretation of the near-surface.

The results from the different processing techniques, including refraction (reciprocal method and tomography), reflection, and a depth converted stack, provide an internally consistent interpretation of the base of weathering and layering within the weathering.

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2015-12-01

2026-01-24

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References

Hassanpour, H., 2008, A time-frequency approach for noise reduction: Digital Signal Processing, 18, pp728-738.
Hawkins, L., 1961, The reciprocal method of routine shallow seismic refraction investigations: Geophysics, 26, pp806-819.
Hearn, S., Kay, M., Dixon, O., 1991, Evaluation of P- and S-wave sources for shallow seismic reflection: Exploration Geophysics, 22, pp169-174.
Pugin, A., Brewer, K., Cartwright, T., Pullan, S., Didier, P., Crow, H., Hunter, J., 2013, Near surface S-wave seismic reflection profiling - new approaches and insights: First Break, 31, pp 49-60.
Steeples, D.W., 1998, Shallow seismic reflection section -Introduction: Geophysics, 63, pp1210-1212.
Steeples, D.W., Miller, R.D., 1998, Avoiding pitfalls in shallow seismic reflection surveys: Geophysics, 63, pp1213-1224.
Strong, S. and Hearn, S. 2015, Can near-surface velocity structure be improved via dispersion analysis of conventional reflection data. ASEG 24th International Conference and Exhibition, Perth.

/content/journals/10.1071/ASEG2015ab032

Article Type: Research Article

Keyword(s): Near-surface seismic; reflection; refraction; tomography

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oa Integrated reflection and refraction processing of an ultra-shallow seismic survey

Abstract

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