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DOI | 10.1038/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
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ISSN | 2041-1723 |
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 |
URL | 查看原文 |
引用统计 | |
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 |
推荐引用方式 GB/T 7714 | 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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