Item type |
デフォルトアイテムタイプ(フル)(1) |
公開日 |
2018-01-30 |
タイトル |
|
|
タイトル |
Origin of methane-rich natural gas at the West Pacific convergent plate boundary |
|
言語 |
en |
作成者 |
Sano, Yuji
Kinoshita, Naoya
Kagoshima, Takanori
Takahata, Naoto
Sakata, Susumu
Toki, Tomohiro
Kawagucci, Shinsuke
Waseda, Amane
Lan, Tefang
Wen, Hsinyi
Chen, Ai-Ti
Lee, Hsiaofen
Yang, Tsanyao F.
Zheng, Guodong
Tomonaga, Yama
Roulleau, Emilie
Pinti, Daniele L.
|
アクセス権 |
|
|
アクセス権 |
open access |
|
アクセス権URI |
http://purl.org/coar/access_right/c_abf2 |
権利情報 |
|
|
言語 |
en |
|
権利情報 |
Creative Commons Attribution 4.0 International License |
内容記述 |
|
|
内容記述タイプ |
Other |
|
内容記述 |
Methane emission from the geosphere is generally characterized by a radiocarbon-free signature and might preserve information on the deep carbon cycle on Earth. Here we report a clear relationship between the origin of methane-rich natural gases and the geodynamic setting of the West Pacific convergent plate boundary. Natural gases in the frontal arc basin (South Kanto gas fields, Northeast Japan) show a typical microbial signature with light carbon isotopes, high CH4/C2H6 and CH4/3He ratios. In the Akita-Niigata region – which corresponds to the slope stretching from the volcanic-arc to the back-arc –a thermogenic signature characterize the gases, with prevalence of heavy carbon isotopes, low CH4/C2H6 and CH4/3He ratios. Natural gases from mud volcanoes in South Taiwan at the collision zone show heavy carbon isotopes, middle CH4/C2H6 ratios and low CH4/3He ratios. On the other hand, those from the Tokara Islands situated on the volcanic front of Southwest Japan show the heaviest carbon isotopes, middle CH4/C2H6 ratios and the lowest CH4/3He ratios. The observed geochemical signatures of natural gases are clearly explained by a mixing of microbial, thermogenic and abiotic methane. An increasing contribution of abiotic methane towards more tectonically active regions of the plate boundary is suggested. |
内容記述 |
|
|
内容記述タイプ |
Other |
|
内容記述 |
論文 |
出版者 |
|
|
言語 |
en |
|
出版者 |
Nature Publishing Group |
言語 |
|
|
言語 |
eng |
資源タイプ |
|
|
資源タイプ |
journal article |
|
資源タイプ識別子 |
http://purl.org/coar/resource_type/c_6501 |
出版タイプ |
|
|
出版タイプ |
VoR |
|
出版タイプResource |
http://purl.org/coar/version/c_970fb48d4fbd8a85 |
識別子 |
|
|
識別子 |
http://hdl.handle.net/20.500.12000/37627 |
|
識別子タイプ |
HDL |
関連情報 |
|
|
|
識別子タイプ |
DOI |
|
|
関連識別子 |
https://doi.org/10.1016/j.bbrc.2016.12.03610.1038/s41598-017-15959-5 |
関連情報 |
|
|
|
識別子タイプ |
DOI |
|
|
関連識別子 |
info:doi/10.1038/s41598-017-15959-5 |
収録物識別子 |
|
|
収録物識別子タイプ |
ISSN |
|
収録物識別子 |
2045-2322 |
収録物名 |
|
|
言語 |
en |
|
収録物名 |
Scientific Reports |
書誌情報 |
巻 7,
p. none,
発行日 2017-11-15
|