GSTDTAP  > 资源环境科学
DOI10.1038/s41467-020-16628-4
Contactless probing of polycrystalline methane hydrate at pore scale suggests weaker tensile properties than thought
Atig, Dyhia1,2; Broseta, Daniel1,2; Pereira, Jean-Michel3; Brown, Ross1,4
2020-07-06
发表期刊NATURE COMMUNICATIONS
ISSN2041-1723
出版年2020
卷号11期号:1
文章类型Article
语种英语
国家France
英文摘要

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 pore scales remain almost completely unknown, notably the influence of grain size on its own cohesion. Here we grow thin films of the hydrate in glass capillaries. Using a novel, contactless thermal method to apply stress, and video microscopy to observe the strain, we estimate the tensile elastic modulus and strength. Ductile and brittle characteristics are both found, dependent on sample thickness and texture, which are controlled by supercooling with respect to the dissociation temperature and by ageing. Relating the data to the literature suggests the cohesive strength of methane hydrate was so far significantly overestimated.


领域地球科学 ; 气候变化 ; 资源环境
收录类别SCI-E
WOS记录号WOS:000550671200005
WOS关键词MARINE-SEDIMENTS ; GRAIN-SIZE ; GAS ; WATER ; FILM ; GROWTH ; MASS ; INTERFACE ; STRENGTH ; ICE
WOS类目Multidisciplinary Sciences
WOS研究方向Science & Technology - Other Topics
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文献类型期刊论文
条目标识符http://119.78.100.173/C666/handle/2XK7JSWQ/282725
专题资源环境科学
作者单位1.UNIV PAU, CNRS, TOTAL, F-64000 Pau, France;
2.Lab Fluides Complexes & Leurs Reservoirs, PAYS ADOUR E2S UPPA, UMR5150, F-64000 Pau, France;
3.Univ Gustave Eiffel, Navier, Ecole Ponts, CNRS, Marne La Vallee, France;
4.Inst Sci Analyt & Phys Chim & Environm & Mat, PAYS ADOUR E2S UPPA, UMR5254, F-64000 Pau, France
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Atig, Dyhia,Broseta, Daniel,Pereira, Jean-Michel,et al. Contactless probing of polycrystalline methane hydrate at pore scale suggests weaker tensile properties than thought[J]. NATURE COMMUNICATIONS,2020,11(1).
APA Atig, Dyhia,Broseta, Daniel,Pereira, Jean-Michel,&Brown, Ross.(2020).Contactless probing of polycrystalline methane hydrate at pore scale suggests weaker tensile properties than thought.NATURE COMMUNICATIONS,11(1).
MLA Atig, Dyhia,et al."Contactless probing of polycrystalline methane hydrate at pore scale suggests weaker tensile properties than thought".NATURE COMMUNICATIONS 11.1(2020).
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