NDLI: Disturbance of deep-sea environments induced by the M9.0 Tohoku Earthquake

Content Provider	PubMed Central
Author	Kawagucci, Shinsuke Yoshida, Yukari T. Noguchi, Takuroh Honda, Makio C. Uchida, Hiroshi Ishibashi, Hidenori Nakagawa, Fumiko Tsunogai, Urumu Okamura, Kei Takaki, Yoshihiro Nunoura, Takuro Miyazaki, Junichi Hirai, Miho Lin, Weiren Hiroshi, Kitazato Takai, Ken
Copyright Year	2012
Abstract	The impacts of the M9.0 Tohoku Earthquake on deep-sea environment were investigated 36 and 98 days after the event. The light transmission anomaly in the deep-sea water after 36 days became atypically greater (∼35%) and more extensive (thickness ∼1500 m) near the trench axis owing to the turbulent diffusion of fresh seafloor sediment, coordinated with potential seafloor displacement. In addition to the chemical influx associated with sediment diffusion, an influx of 13C-enriched methane from the deep sub-seafloor reservoirs was estimated. This isotopically unusual methane influx was possibly triggered by the earthquake and its aftershocks that subsequently induced changes in the sub-seafloor hydrogeologic structures. The whole prokaryotic biomass and the development of specific phylotypes in the deep-sea microbial communities could rise and fall at 36 and 98 days, respectively, after the event. We may capture the snap shots of post-earthquake disturbance in deep-sea chemistry and microbial community responses.
Related Links	http://dx.doi.org/10.1038/srep00270
Starting Page	270
File Format	PDF
ISSN	20452322
e-ISSN	20452322
Journal	Scientific Reports
Volume Number	2
Language	English
Publisher	Nature Publishing Group
Publisher Date	2012-02-01
Access Restriction	Open
Rights Holder	Nature Publishing Group
Subject Keyword	Science and technology Research in Higher Education
Content Type	Text
Resource Type	Article
Subject	Multidisciplinary

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