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A consistent global approach for the morphometric characterization of subaqueous landslides

A consistent global approach for the morphometric characterization of subaqueous landslides
A consistent global approach for the morphometric characterization of subaqueous landslides
Landslides are common in aquatic settings worldwide, from lakes and coastal environments to the deep sea. Fast-moving, large-volume landslides can potentially trigger destructive tsunamis. Landslides damage and disrupt global communication links and other critical marine infrastructure. Landslide deposits act as foci for localized, but important, deep-seafloor biological communities. Under burial, landslide deposits play an important role in a successful petroleum system. While the broad importance of understanding subaqueous landslide processes is evident, a number of important scientific questions have yet to receive the needed attention. Collecting quantitative data is a critical step to addressing questions surrounding subaqueous landslides.

Quantitative metrics of subaqueous landslides are routinely recorded, but which ones, and how they are defined, depends on the end-user focus. Differences in focus can inhibit communication of knowledge between communities, and complicate comparative analysis. This study outlines an approach specifically for consistent measurement of subaqueous landslide morphometrics to be used in the design of a broader, global open-source, peer-curated database. Examples from different settings illustrate how the approach can be applied, as well as the difficulties encountered when analysing different landslides and data types. Standardizing data collection for subaqueous landslides should result in more accurate geohazard predictions and resource estimation.
0305-8719
Clare, Michael
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Chaytor, Jason
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Dabson, Oliver
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Gamboa, Davide
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Georgiopoulou, Aggeliki
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Eady, Harry
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Hunt, James
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Jackson, Christopher
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Katz, Oded
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Krastel, Sebastian
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León, Ricardo
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Micallef, Aaron
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Moernaut, Jasper
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Moriconi, Roberto
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Moscardelli, Lorena
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Mueller, Christof
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Normandeau, Alexandre
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Patacci, Marco
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Steventon, Michael
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Urlaub, Morelia
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Völker, David
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Wood, Lesli
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Jobe, Zane
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Clare, Michael
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Chaytor, Jason
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Dabson, Oliver
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Gamboa, Davide
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Georgiopoulou, Aggeliki
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Eady, Harry
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Hunt, James
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Jackson, Christopher
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Katz, Oded
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Krastel, Sebastian
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León, Ricardo
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Micallef, Aaron
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Moernaut, Jasper
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Moriconi, Roberto
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Moscardelli, Lorena
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Mueller, Christof
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Normandeau, Alexandre
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Patacci, Marco
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Steventon, Michael
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Urlaub, Morelia
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Völker, David
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Wood, Lesli
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Jobe, Zane
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Clare, Michael, Chaytor, Jason, Dabson, Oliver, Gamboa, Davide, Georgiopoulou, Aggeliki, Eady, Harry, Hunt, James, Jackson, Christopher, Katz, Oded, Krastel, Sebastian, León, Ricardo, Micallef, Aaron, Moernaut, Jasper, Moriconi, Roberto, Moscardelli, Lorena, Mueller, Christof, Normandeau, Alexandre, Patacci, Marco, Steventon, Michael, Urlaub, Morelia, Völker, David, Wood, Lesli and Jobe, Zane (2018) A consistent global approach for the morphometric characterization of subaqueous landslides. Geological Society, London, Special Publications, [SP477.15]. (doi:10.1144/SP477.15).

Record type: Article

Abstract

Landslides are common in aquatic settings worldwide, from lakes and coastal environments to the deep sea. Fast-moving, large-volume landslides can potentially trigger destructive tsunamis. Landslides damage and disrupt global communication links and other critical marine infrastructure. Landslide deposits act as foci for localized, but important, deep-seafloor biological communities. Under burial, landslide deposits play an important role in a successful petroleum system. While the broad importance of understanding subaqueous landslide processes is evident, a number of important scientific questions have yet to receive the needed attention. Collecting quantitative data is a critical step to addressing questions surrounding subaqueous landslides.

Quantitative metrics of subaqueous landslides are routinely recorded, but which ones, and how they are defined, depends on the end-user focus. Differences in focus can inhibit communication of knowledge between communities, and complicate comparative analysis. This study outlines an approach specifically for consistent measurement of subaqueous landslide morphometrics to be used in the design of a broader, global open-source, peer-curated database. Examples from different settings illustrate how the approach can be applied, as well as the difficulties encountered when analysing different landslides and data types. Standardizing data collection for subaqueous landslides should result in more accurate geohazard predictions and resource estimation.

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ACCEPTED VERSION CLARE ET AL GSL - Accepted Manuscript
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SP477.15.full - Version of Record
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Accepted/In Press date: 1 January 2018
e-pub ahead of print date: 28 March 2018
Published date: March 2018

Identifiers

Local EPrints ID: 421145
URI: http://eprints.soton.ac.uk/id/eprint/421145
ISSN: 0305-8719
PURE UUID: 33525347-6f07-484c-b730-bc5d1c7f5656

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Date deposited: 23 May 2018 16:30
Last modified: 28 Apr 2022 05:06

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Contributors

Author: Michael Clare
Author: Jason Chaytor
Author: Oliver Dabson
Author: Davide Gamboa
Author: Aggeliki Georgiopoulou
Author: Harry Eady
Author: James Hunt
Author: Oded Katz
Author: Sebastian Krastel
Author: Ricardo León
Author: Aaron Micallef
Author: Jasper Moernaut
Author: Roberto Moriconi
Author: Lorena Moscardelli
Author: Christof Mueller
Author: Alexandre Normandeau
Author: Marco Patacci
Author: Michael Steventon
Author: Morelia Urlaub
Author: David Völker
Author: Lesli Wood
Author: Zane Jobe

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