Initialising ...
Initialising ...
Initialising ...
Initialising ...
Initialising ...
Initialising ...
Initialising ...
天野 由記; Diamond, S.*; Lavy, A.*; Anantharaman, K.*; 宮川 和也; 岩月 輝希; 別部 光里*; 鈴木 庸平*; Thomas, B. C.*; Banfield, J. F.*
no journal, ,
We investigated the microbiology two Japanese subsurface research sites and compared the major groups of organisms lacking cultivated representatives found from other subsurface sites, including a Colorado aquifer and deep aquifers underlying the Crystal Geyser. We analyzed metagenomic data 19 samples from the Horonobe site and 7 from the Mizunami site. DNA sequences from each sample were assembled independently and scaffolds encoding the ribosomal protein S3 sequence were identified. The major characteristic of the microbiology of the Mizumani site that distinguished it from the Horonobe site is local very high abundances of Nitrospirae, Parcubacteria, Ignavibacteria, ANME-2D and Micrarchaeota. In contrast, the Horonobe site has locations that are highly enriched in Altarchiales, Syntrophobacteriales, Atribacteria, ANME-2D and Methanogens. Beyond reshaping the Tree of Life, the societal importance of these discoveries remains little known. However, given the huge inventory of new groups of proteins and pathways in the genomes of these organisms, it is reasonable to anticipate major discoveries will hold relevance, for example, in terms of pharmaceutical discovery. Given the importance of the subsurface as a potential host environment for storage of nuclear waste, finding some commonality would indicate the general relevance of information from one site for prediction of the characteristics of other sites.
野村 直希*; 新井 宏受*; 倉元 隆之*; 新里 忠史; 林 誠二*
no journal, ,
東京電力福島第一原子力発電所事故の帰還困難区域に位置する福島県浪江町の山地森林において、2017年に林野火災が発生した。本研究では、土壌及びリター層中の栄養素や放射性セシウムの溶出挙動に係る林野火災の燃焼温度を推定するため、林野火災で生成された残存炭化物に着目した。林野火災により、スギ林及びアカマツ-コナラ優勢の落葉広葉樹林が延焼したため、それら林分に対照サイトを設定し、残存炭化物を対照サイトに隣接する延焼地にて採取した。採取した未燃焼リター, 人工燃焼させたリター及び残存炭化物について、TG-DTA熱分析及び赤外線吸収スペクトル解析を実施した。
瀬下 和芳; 渡邊 貴央; 青木 和弘; 田中 遊雲; Guqlielmi, Y.*; Cook, P.*
no journal, ,
The SIMFIP (Step-Rate Injection Method for Fracture In-situ Properties) was tested for the first time on an active fault. One high level objective of this study is to estimate how efficient this new hydro-mechanical test might be to help estimating the seismic activation potential of faults in Japan The SIMFIP (Step-Rate Injection Method for Fracture In-situ Properties) was tested for the first time on an active fault. One high level objective of this study is to estimate how efficient this new hydro-mechanical test might be to help estimating the seismic activation potential of faults in Japan. The Shionohira fault caused the April 11, 2011 Fukushima-ken Hamadori Earthquake of Mw 6.7 which occurred one month after the Tohoku-Oki earthquake of Mw 9.0. Co-seismic surface ruptures trending NNW-SSE allowed to estimate a normal slip faulting with a 2 m maximum displacement.