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DOI | 10.1029/2019GL084668 |
In Situ Mechanical Properties of Shallow Gas Hydrate Deposits in the Deep Seabed | |
Yoneda, Jun1; Kida, Masato1,2; Konno, Yoshihiro1,3; Jin, Yusuke1; Morita, Sumito; Tenma, Norio5 | |
2019-12-28 | |
发表期刊 | GEOPHYSICAL RESEARCH LETTERS |
ISSN | 0094-8276 |
EISSN | 1944-8007 |
出版年 | 2019 |
文章类型 | Article;Early Access |
语种 | 英语 |
国家 | Japan |
英文摘要 | Natural gas hydrates (or methane hydrates) could become a major energy source but could also exacerbate global warming, because as the climate warms, hydrate deposits deep under the oceans or in permafrost may release methane into the atmosphere. There are many shallow deposits of gas hydrates in fine-grained muddy sediments on the seafloor. However, the mechanical properties of these sediments have not yet been investigated because of the engineering challenges in coring and testing at in situ temperatures and pressures. Here we present the first uniaxial and triaxial strength and stiffness measurements of pure massive natural gas hydrates and muddy sediments containing hydrate nodules obtained by pressure coring. As a result, we were able to observe the hydrate undergoing a catastrophic brittle failure. Its strength and deformation moduli were 3 and 300 MPa, respectively. Muddy sediments containing hydrate nodules had the same strength as that of hydrate-free sediments. |
英文关键词 | gas hydrate stiffness pressure coring compression test deep seabed |
领域 | 气候变化 |
收录类别 | SCI-E |
WOS记录号 | WOS:000504596900001 |
WOS关键词 | METHANE CLATHRATE HYDRATE ; PHYSICAL-PROPERTIES ; EASTERN MARGIN ; NANKAI TROUGH ; JOETSU BASIN ; ICE ; SEDIMENTS ; STRENGTH ; BEHAVIOR ; DEFORMATION |
WOS类目 | Geosciences, Multidisciplinary |
WOS研究方向 | Geology |
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/225260 |
专题 | 环境与发展全球科技态势 |
作者单位 | 1.Natl Inst Adv Ind Sci & Technol, Dept Energy & Environm, Sapporo, Hokkaido, Japan; 2.Kitami Inst Technol, Sch Earth Energy & Environm Engn, Fac Engn, Kitami, Hokkaido, Japan; 3.Univ Tokyo, Dept Ocean Technol Policy & Environm, Kashiwa, Chiba, Japan; 4.AIST, Geol Survey Japan, Tsukuba, Ibaraki, Japan; 5.AIST, Dept Energy & Environm, Tsukuba, Ibaraki, Japan |
推荐引用方式 GB/T 7714 | Yoneda, Jun,Kida, Masato,Konno, Yoshihiro,et al. In Situ Mechanical Properties of Shallow Gas Hydrate Deposits in the Deep Seabed[J]. GEOPHYSICAL RESEARCH LETTERS,2019. |
APA | Yoneda, Jun,Kida, Masato,Konno, Yoshihiro,Jin, Yusuke,Morita, Sumito,&Tenma, Norio.(2019).In Situ Mechanical Properties of Shallow Gas Hydrate Deposits in the Deep Seabed.GEOPHYSICAL RESEARCH LETTERS. |
MLA | Yoneda, Jun,et al."In Situ Mechanical Properties of Shallow Gas Hydrate Deposits in the Deep Seabed".GEOPHYSICAL RESEARCH LETTERS (2019). |
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