An application of multiscale early arrival waveform inversion to shallow seismic data

Handle URI:
http://hdl.handle.net/10754/563232
Title:
An application of multiscale early arrival waveform inversion to shallow seismic data
Authors:
Yu, Han; Hanafy, Sherif M.
Abstract:
We estimate the near surface velocity distribution by applying multiscale early arrival waveform inversion (MEWI) to shallow seismic land data. This data set is collected at Wadi Qudaid in western Saudi Arabia with the purpose of characterizing the shallow subsurface for its water storage and reuse potential. To enhance the accuracy of MEWI, we correct for the attenuation effects with an estimated factor Q, and also extract a natural source wavelet from the data. We then applied MEWI to invert the processed data for tomograms on different scales starting from a traveltime tomogram as our initial velocity model. Results suggest that, compared to traveltime tomography, MEWI can generate a more highly resolved velocity tomogram from shallow seismic data by inverting its low-frequency components on coarse grids and its high-frequency components on fine grids. The estimated water table in the MEWI tomogram is generally consistent with, but 9% deeper than, the traveltime tomogram, showing that the water storage in this wadi might be less than expected from the traveltime tomogram. We believe that the more accurate MEWI tomogram will make an economically important difference in assessing the storage potential of this wadi and wadis throughout the world. © 2014 European Association of Geoscientists & Engineers.
KAUST Department:
Physical Sciences and Engineering (PSE) Division
Publisher:
EAGE Publications
Journal:
Near Surface Geophysics
Issue Date:
2014
DOI:
10.3997/1873-0604.2014002
Type:
Article
ISSN:
15694445
Sponsors:
The authors acknowledge the assistance of Prof. Gerard Schuster for his extraordinary insights and comments in the development of this paper. We thank the sponsors from ofthe Center for Subsurface Imaging and Fluid Modeling (CSIM: http://csim.kaust.edu.sa). We are also grateful for the high performance computational resources (http://hpc.kaust.edu.sa) provided by KAUST.
Appears in Collections:
Articles; Physical Sciences and Engineering (PSE) Division; Center for Subsurface Imaging and Fluid Modeling (CSIM)

Full metadata record

DC FieldValue Language
dc.contributor.authorYu, Hanen
dc.contributor.authorHanafy, Sherif M.en
dc.date.accessioned2015-08-03T11:43:43Zen
dc.date.available2015-08-03T11:43:43Zen
dc.date.issued2014en
dc.identifier.issn15694445en
dc.identifier.doi10.3997/1873-0604.2014002en
dc.identifier.urihttp://hdl.handle.net/10754/563232en
dc.description.abstractWe estimate the near surface velocity distribution by applying multiscale early arrival waveform inversion (MEWI) to shallow seismic land data. This data set is collected at Wadi Qudaid in western Saudi Arabia with the purpose of characterizing the shallow subsurface for its water storage and reuse potential. To enhance the accuracy of MEWI, we correct for the attenuation effects with an estimated factor Q, and also extract a natural source wavelet from the data. We then applied MEWI to invert the processed data for tomograms on different scales starting from a traveltime tomogram as our initial velocity model. Results suggest that, compared to traveltime tomography, MEWI can generate a more highly resolved velocity tomogram from shallow seismic data by inverting its low-frequency components on coarse grids and its high-frequency components on fine grids. The estimated water table in the MEWI tomogram is generally consistent with, but 9% deeper than, the traveltime tomogram, showing that the water storage in this wadi might be less than expected from the traveltime tomogram. We believe that the more accurate MEWI tomogram will make an economically important difference in assessing the storage potential of this wadi and wadis throughout the world. © 2014 European Association of Geoscientists & Engineers.en
dc.description.sponsorshipThe authors acknowledge the assistance of Prof. Gerard Schuster for his extraordinary insights and comments in the development of this paper. We thank the sponsors from ofthe Center for Subsurface Imaging and Fluid Modeling (CSIM: http://csim.kaust.edu.sa). We are also grateful for the high performance computational resources (http://hpc.kaust.edu.sa) provided by KAUST.en
dc.publisherEAGE Publicationsen
dc.titleAn application of multiscale early arrival waveform inversion to shallow seismic dataen
dc.typeArticleen
dc.contributor.departmentPhysical Sciences and Engineering (PSE) Divisionen
dc.identifier.journalNear Surface Geophysicsen
kaust.authorYu, Hanen
kaust.authorHanafy, Sherif M.en
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