Immediate change of radiation doses from hydrothermal deposits

Shin Toyoda, Fumihiro Sato, Ai Uchida, Jun Ichiro Ishibashi

研究成果: 著書/レポートタイプへの貢献


The radiation from the sulfide deposits taken at Okinawa Trough was measured on-board by a NaI gamma ray spectrometer immediately after the retrieval of the sample onto the research vessel. Gamma ray peaks were identified as those from daughter nuclei of226Ra and228Ra. The slight change with time of the radiation dose from those deposits is probably due to the geometric arrangement in measurements. As results, no change in radiation dose was observed in the time range up to 90 h after retrieval of the samples from the submarine vehicle.

ホスト出版物のタイトルSubseafloor Biosphere Linked to Hydrothermal Systems
ホスト出版物のサブタイトルTAIGA Concept
出版者Springer Japan
出版物ステータス出版済み - 1 1 2015

All Science Journal Classification (ASJC) codes

  • Earth and Planetary Sciences(all)

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  • これを引用

    Toyoda, S., Sato, F., Uchida, A., & Ishibashi, J. I. (2015). Immediate change of radiation doses from hydrothermal deposits. : Subseafloor Biosphere Linked to Hydrothermal Systems: TAIGA Concept (pp. 621-624). Springer Japan.