Diffraction imaging of sediment drifts in the Canterbury Basin, New Zealand
Analysis of scattered, or diffraction energy (the seismic response of small-scale objects) in the seismic data from Canterbury Basin, New Zealand reveals additional geological information about depositional patterns in sedimentary deposits. Diffrac- tion images from the seismic response for Canterbu...
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ndltd-UTEXAS-oai-repositories.lib.utexas.edu-2152-200332015-09-20T17:14:54ZDiffraction imaging of sediment drifts in the Canterbury Basin, New ZealandAl-Hadab, Salah AhmadDiffraction imagingSediment driftsDiffraction energyCanterbury BasinNew ZealandAnalysis of scattered, or diffraction energy (the seismic response of small-scale objects) in the seismic data from Canterbury Basin, New Zealand reveals additional geological information about depositional patterns in sedimentary deposits. Diffrac- tion images from the seismic response for Canterbury Basin provide complementary interpretation tools to the conventional specular reflection images. To image diffrac- tions for a dataset from Canterbury Basin, I take the following steps: First, I attenuate multiples using a surface multiple prediction algorithm to predict multiples and apply regularized nonstationary regression to adaptively subtract the predicted multiples. Next, I separate diffractions using the plane-wave destruction method. The plane- wave destruction method removes conventional reflected energy in order to enhance the diffracted energy. I then apply a velocity continuation method on diffraction data to estimate migration velocities and then migrate the data using Kirchhoff migration in the dip-angle-gather domain. The resultant conventional and diffraction images are improved images suitable for geological interpretation of prograding sediment drifts.text2013-04-25T17:46:30Z2012-122012-11-26December 20122013-04-25T17:46:31Zapplication/pdfhttp://hdl.handle.net/2152/20033en_US |
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Diffraction imaging Sediment drifts Diffraction energy Canterbury Basin New Zealand |
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Diffraction imaging Sediment drifts Diffraction energy Canterbury Basin New Zealand Al-Hadab, Salah Ahmad Diffraction imaging of sediment drifts in the Canterbury Basin, New Zealand |
description |
Analysis of scattered, or diffraction energy (the seismic response of small-scale
objects) in the seismic data from Canterbury Basin, New Zealand reveals additional
geological information about depositional patterns in sedimentary deposits. Diffrac-
tion images from the seismic response for Canterbury Basin provide complementary
interpretation tools to the conventional specular reflection images. To image diffrac-
tions for a dataset from Canterbury Basin, I take the following steps: First, I attenuate
multiples using a surface multiple prediction algorithm to predict multiples and apply
regularized nonstationary regression to adaptively subtract the predicted multiples.
Next, I separate diffractions using the plane-wave destruction method. The plane-
wave destruction method removes conventional reflected energy in order to enhance
the diffracted energy. I then apply a velocity continuation method on diffraction data
to estimate migration velocities and then migrate the data using Kirchhoff migration
in the dip-angle-gather domain. The resultant conventional and diffraction images are
improved images suitable for geological interpretation of prograding sediment drifts. === text |
author |
Al-Hadab, Salah Ahmad |
author_facet |
Al-Hadab, Salah Ahmad |
author_sort |
Al-Hadab, Salah Ahmad |
title |
Diffraction imaging of sediment drifts in the Canterbury Basin, New Zealand |
title_short |
Diffraction imaging of sediment drifts in the Canterbury Basin, New Zealand |
title_full |
Diffraction imaging of sediment drifts in the Canterbury Basin, New Zealand |
title_fullStr |
Diffraction imaging of sediment drifts in the Canterbury Basin, New Zealand |
title_full_unstemmed |
Diffraction imaging of sediment drifts in the Canterbury Basin, New Zealand |
title_sort |
diffraction imaging of sediment drifts in the canterbury basin, new zealand |
publishDate |
2013 |
url |
http://hdl.handle.net/2152/20033 |
work_keys_str_mv |
AT alhadabsalahahmad diffractionimagingofsedimentdriftsinthecanterburybasinnewzealand |
_version_ |
1716823095827759104 |