Geomorphology and remote physical properties of late Quaternary slide structures using decimetre-resolution 3D seismic volumes: insights for deep water geohazard assessment
Geomorphology and remote physical properties of late Quaternary slide structures using decimetre-resolution 3D seismic volumes: insights for deep water geohazard assessment
Traditional exploration methods, involving a combination of two-dimensional seismic profiles with cores and/or swath bathymetry/side-scan sonar, do not adequately sample all three spatial dimensions for true morphological mapping of submarine mass movement deposits. It is only with the acquisition of three-dimensional (3D) seismic volumes that the complex 3D nature of these features can be correctly imaged. Over the last 5-10 years, the interpretation of industry-scale 3D seismic volumes from numerous continental shelf locations has allowed effective mapping of the deposit morphology. Features such as head scarps, side walls, extensional/compressional ridges, striations on the basal surface, translated blocks, and preservation/deformation of internal reflectors have been shown to constrain the direction and method of material transport. Here we demonstrate the application of these techniques to the shallow-water environment using decimeter-resolution 3D seismic volumes, with case studies from Trondheimsfjorden (Norway) and Lake Windermere (UK Lake District). Through the mapping of top/base reflector morphologies, internal structure, translated blocks, and head scarps/side walls we demonstrate the same techniques can be used to differentiate flow mechanics (coherent slide blocks, slumped material, debris flows, and a mass flow) and quantify direction of motion at this radically different scale.
400-420
Vardy, Mark E.
8dd019dc-e57d-4b49-8f23-0fa6d246e69d
Dix, J.K.
efbb0b6e-7dfd-47e1-ae96-92412bd45628
Henstock, Timothy J.
27c450a4-3e6b-41f8-97f9-4e0e181400bb
Bull, J.M.
974037fd-544b-458f-98cc-ce8eca89e3c8
Davis, J.W.
7f762b01-375b-42c8-80cb-65baefffdb97
Pinson, Luke J.W.
754e7438-c374-4c2a-946b-aab1b11bc998
L'Heurrux, Jean-Sebastien
deae4aa6-a5ab-41d0-838c-c18d409cc5b9
Longva, Oddvar
1f119753-e3a2-4ed5-a133-6f1227bd58ce
Hansen, Louisa
35b645cb-153b-4e1d-a98a-02d9ea6b4018
Chand, Shyam
77976f32-dbae-4333-a4ba-a056123b41b8
December 2010
Vardy, Mark E.
8dd019dc-e57d-4b49-8f23-0fa6d246e69d
Dix, J.K.
efbb0b6e-7dfd-47e1-ae96-92412bd45628
Henstock, Timothy J.
27c450a4-3e6b-41f8-97f9-4e0e181400bb
Bull, J.M.
974037fd-544b-458f-98cc-ce8eca89e3c8
Davis, J.W.
7f762b01-375b-42c8-80cb-65baefffdb97
Pinson, Luke J.W.
754e7438-c374-4c2a-946b-aab1b11bc998
L'Heurrux, Jean-Sebastien
deae4aa6-a5ab-41d0-838c-c18d409cc5b9
Longva, Oddvar
1f119753-e3a2-4ed5-a133-6f1227bd58ce
Hansen, Louisa
35b645cb-153b-4e1d-a98a-02d9ea6b4018
Chand, Shyam
77976f32-dbae-4333-a4ba-a056123b41b8
Vardy, Mark E., Dix, J.K., Henstock, Timothy J., Bull, J.M., Davis, J.W., Pinson, Luke J.W., L'Heurrux, Jean-Sebastien, Longva, Oddvar, Hansen, Louisa and Chand, Shyam
(2010)
Geomorphology and remote physical properties of late Quaternary slide structures using decimetre-resolution 3D seismic volumes: insights for deep water geohazard assessment.
Wood, Lesli J., Simo, Toni T. and Rosen, Norman C.
(eds.)
In Seismic Imaging of Depositional and Geomorphic Systems: 30th Annual Gulf Coast Section SEPM Foundation.
Gulf Coast Section SEPM.
.
(doi:10.5724/gcs.10.30.0400).
Record type:
Conference or Workshop Item
(Paper)
Abstract
Traditional exploration methods, involving a combination of two-dimensional seismic profiles with cores and/or swath bathymetry/side-scan sonar, do not adequately sample all three spatial dimensions for true morphological mapping of submarine mass movement deposits. It is only with the acquisition of three-dimensional (3D) seismic volumes that the complex 3D nature of these features can be correctly imaged. Over the last 5-10 years, the interpretation of industry-scale 3D seismic volumes from numerous continental shelf locations has allowed effective mapping of the deposit morphology. Features such as head scarps, side walls, extensional/compressional ridges, striations on the basal surface, translated blocks, and preservation/deformation of internal reflectors have been shown to constrain the direction and method of material transport. Here we demonstrate the application of these techniques to the shallow-water environment using decimeter-resolution 3D seismic volumes, with case studies from Trondheimsfjorden (Norway) and Lake Windermere (UK Lake District). Through the mapping of top/base reflector morphologies, internal structure, translated blocks, and head scarps/side walls we demonstrate the same techniques can be used to differentiate flow mechanics (coherent slide blocks, slumped material, debris flows, and a mass flow) and quantify direction of motion at this radically different scale.
This record has no associated files available for download.
More information
Published date: December 2010
Venue - Dates:
30th Annual Gulf Coast Section SEPM Foundation Bob F. Perkins Research Conference, Houston, United States, 2010-12-05 - 2010-12-08
Organisations:
Geology & Geophysics
Identifiers
Local EPrints ID: 350838
URI: http://eprints.soton.ac.uk/id/eprint/350838
PURE UUID: c262f2d7-f2a5-4445-8e9f-b58bdc302508
Catalogue record
Date deposited: 09 Apr 2013 08:39
Last modified: 15 Mar 2024 03:04
Export record
Altmetrics
Contributors
Author:
Mark E. Vardy
Author:
Luke J.W. Pinson
Author:
Jean-Sebastien L'Heurrux
Author:
Oddvar Longva
Author:
Louisa Hansen
Author:
Shyam Chand
Editor:
Lesli J. Wood
Editor:
Toni T. Simo
Editor:
Norman C. Rosen
Download statistics
Downloads from ePrints over the past year. Other digital versions may also be available to download e.g. from the publisher's website.
View more statistics
