Contactless probing of polycrystalline methane hydrate at pore scale suggests weaker tensile properties than thought
International audience Methane hydrate is widely distributed in the pores of marine sediments or permafrost soils,contributing to their mechanical properties. Yet the tensile properties of the hydrate at porescales remain almost completely unknown, notably the influence of grain size on its owncohes...
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ftuniveiffel:oai:HAL:hal-02884447v1 2024-06-23T07:54:36+00:00 Contactless probing of polycrystalline methane hydrate at pore scale suggests weaker tensile properties than thought Atig, Dyhia Broseta, Daniel Pereira, Jean-Michel Brown, Ross Laboratoire des Fluides Complexes et leurs Réservoirs (LFCR) TOTAL FINA ELF-Université de Pau et des Pays de l'Adour (UPPA)-Centre National de la Recherche Scientifique (CNRS) Laboratoire Navier (NAVIER UMR 8205) École des Ponts ParisTech (ENPC)-Centre National de la Recherche Scientifique (CNRS)-Université Gustave Eiffel Institut des sciences analytiques et de physico-chimie pour l'environnement et les materiaux (IPREM) Université de Pau et des Pays de l'Adour (UPPA)-Institut de Chimie - CNRS Chimie (INC-CNRS)-Centre National de la Recherche Scientifique (CNRS) 2020-06 https://univ-pau.hal.science/hal-02884447 https://univ-pau.hal.science/hal-02884447/document https://univ-pau.hal.science/hal-02884447/file/s41467-020-16628-4.pdf https://doi.org/10.1038/s41467-020-16628-4 en eng HAL CCSD Nature Publishing Group info:eu-repo/semantics/altIdentifier/doi/10.1038/s41467-020-16628-4 hal-02884447 https://univ-pau.hal.science/hal-02884447 https://univ-pau.hal.science/hal-02884447/document https://univ-pau.hal.science/hal-02884447/file/s41467-020-16628-4.pdf doi:10.1038/s41467-020-16628-4 info:eu-repo/semantics/OpenAccess ISSN: 2041-1723 EISSN: 2041-1723 Nature Communications https://univ-pau.hal.science/hal-02884447 Nature Communications, 2020, 11, pp.3379. ⟨10.1038/s41467-020-16628-4⟩ [SDE]Environmental Sciences [PHYS]Physics [physics] info:eu-repo/semantics/article Journal articles 2020 ftuniveiffel https://doi.org/10.1038/s41467-020-16628-4 2024-06-05T23:39:34Z International audience Methane hydrate is widely distributed in the pores of marine sediments or permafrost soils,contributing to their mechanical properties. Yet the tensile properties of the hydrate at porescales remain almost completely unknown, notably the influence of grain size on its owncohesion. Here we grow thinfilms of the hydrate in glass capillaries. Using a novel, con-tactless thermal method to apply stress, and video microscopy to observe the strain, weestimate the tensile elastic modulus and strength. Ductile and brittle characteristics are bothfound, dependent on sample thickness and texture, which are controlled by supercooling withrespect to the dissociation temperature and by ageing. Relating the data to the literaturesuggests the cohesive strength of methane hydrate was so far significantly overestimated. Article in Journal/Newspaper Methane hydrate permafrost HAL Univ-Eiffel (Université Gustave Eiffel) Nature Communications 11 1 |
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HAL Univ-Eiffel (Université Gustave Eiffel) |
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English |
topic |
[SDE]Environmental Sciences [PHYS]Physics [physics] |
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[SDE]Environmental Sciences [PHYS]Physics [physics] Atig, Dyhia Broseta, Daniel Pereira, Jean-Michel Brown, Ross Contactless probing of polycrystalline methane hydrate at pore scale suggests weaker tensile properties than thought |
topic_facet |
[SDE]Environmental Sciences [PHYS]Physics [physics] |
description |
International audience Methane hydrate is widely distributed in the pores of marine sediments or permafrost soils,contributing to their mechanical properties. Yet the tensile properties of the hydrate at porescales remain almost completely unknown, notably the influence of grain size on its owncohesion. Here we grow thinfilms of the hydrate in glass capillaries. Using a novel, con-tactless thermal method to apply stress, and video microscopy to observe the strain, weestimate the tensile elastic modulus and strength. Ductile and brittle characteristics are bothfound, dependent on sample thickness and texture, which are controlled by supercooling withrespect to the dissociation temperature and by ageing. Relating the data to the literaturesuggests the cohesive strength of methane hydrate was so far significantly overestimated. |
author2 |
Laboratoire des Fluides Complexes et leurs Réservoirs (LFCR) TOTAL FINA ELF-Université de Pau et des Pays de l'Adour (UPPA)-Centre National de la Recherche Scientifique (CNRS) Laboratoire Navier (NAVIER UMR 8205) École des Ponts ParisTech (ENPC)-Centre National de la Recherche Scientifique (CNRS)-Université Gustave Eiffel Institut des sciences analytiques et de physico-chimie pour l'environnement et les materiaux (IPREM) Université de Pau et des Pays de l'Adour (UPPA)-Institut de Chimie - CNRS Chimie (INC-CNRS)-Centre National de la Recherche Scientifique (CNRS) |
format |
Article in Journal/Newspaper |
author |
Atig, Dyhia Broseta, Daniel Pereira, Jean-Michel Brown, Ross |
author_facet |
Atig, Dyhia Broseta, Daniel Pereira, Jean-Michel Brown, Ross |
author_sort |
Atig, Dyhia |
title |
Contactless probing of polycrystalline methane hydrate at pore scale suggests weaker tensile properties than thought |
title_short |
Contactless probing of polycrystalline methane hydrate at pore scale suggests weaker tensile properties than thought |
title_full |
Contactless probing of polycrystalline methane hydrate at pore scale suggests weaker tensile properties than thought |
title_fullStr |
Contactless probing of polycrystalline methane hydrate at pore scale suggests weaker tensile properties than thought |
title_full_unstemmed |
Contactless probing of polycrystalline methane hydrate at pore scale suggests weaker tensile properties than thought |
title_sort |
contactless probing of polycrystalline methane hydrate at pore scale suggests weaker tensile properties than thought |
publisher |
HAL CCSD |
publishDate |
2020 |
url |
https://univ-pau.hal.science/hal-02884447 https://univ-pau.hal.science/hal-02884447/document https://univ-pau.hal.science/hal-02884447/file/s41467-020-16628-4.pdf https://doi.org/10.1038/s41467-020-16628-4 |
genre |
Methane hydrate permafrost |
genre_facet |
Methane hydrate permafrost |
op_source |
ISSN: 2041-1723 EISSN: 2041-1723 Nature Communications https://univ-pau.hal.science/hal-02884447 Nature Communications, 2020, 11, pp.3379. ⟨10.1038/s41467-020-16628-4⟩ |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.1038/s41467-020-16628-4 hal-02884447 https://univ-pau.hal.science/hal-02884447 https://univ-pau.hal.science/hal-02884447/document https://univ-pau.hal.science/hal-02884447/file/s41467-020-16628-4.pdf doi:10.1038/s41467-020-16628-4 |
op_rights |
info:eu-repo/semantics/OpenAccess |
op_doi |
https://doi.org/10.1038/s41467-020-16628-4 |
container_title |
Nature Communications |
container_volume |
11 |
container_issue |
1 |
_version_ |
1802646802645647360 |