Submarine creeping landslide deformation controlled by the presence of gas hydrates : the Tuaheni Landslide Complex, New Zealand

Methane hydrate occurrence is bound to a finite pressure/temperature window on continental slopes, known as the gas hydrate stability zone (GHSZ). Hydrates within sediment pore spaces and fractures are recognized to act like a cement, increasing shear strength and stabilizing slopes. However, recent...

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Bibliographic Details
Main Authors: Gross, Felix, Mountjoy, Joshu J., Crutchle, Garethy, Koch, Stephanie, Bialas, Jörg, Pecher, Ingo, Woelz, Susi, Dannowski, Anke, Carey, Jon, Micallef, Aaron, Böttner, Christoph, Huhn, Katrin, Krastel, Sebastian
Format: Article in Journal/Newspaper
Language:English
Published: Copernicus GmbH 2016
Subjects:
Mass-wasting > New Zealand
Submarine topography > New Zealand
Landslide hazard analysis > New Zealand
Marine sediments > New Zealand
Tsunamis > New Zealand
Submarine geology > New Zealand
New Zealand
Methane hydrate
Online Access:https://www.um.edu.mt/library/oar/handle/123456789/45490
Description
Summary:Methane hydrate occurrence is bound to a finite pressure/temperature window on continental slopes, known as the gas hydrate stability zone (GHSZ). Hydrates within sediment pore spaces and fractures are recognized to act like a cement, increasing shear strength and stabilizing slopes. However, recent studies show that over longer strain periods methane hydrates can undergo ductile deformation. This combination of short term strengthening and longer term ductile behavior is implicated in the development of slow creeping submarine landforms within the GHSZ. peer-reviewed

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