Gamma ray doses in water around sea floor hydrothermal area in the Southern Mariana trough

Shin Toyoda, Debabrata Banerjee, Hidenori Kumagai, Junichi Miyazaki, Jun Ichiro Ishibashi, Nobutatsu Mochizuki, Shigeaki Kojima

Research output: Chapter in Book/Report/Conference proceedingChapter

Abstract

The dose rates in sea water in the Southern Mariana Trough sea floor hydrothermal area were investigated. The dose rate in sea water was less than detection limit (about 0.1 mGy/year) near the sea surface while it was around 2 mGy/year at the sea floor of hydrothermal area, where those levels of dose rates will be negligible for ESR (electron spin resonance) dating of barite of sulfide deposits. During the dive by a submarine vehicle, there were three locations at which the level of dose rate increases more than ten times as much as the usual level. One was very close to a hydrothermal vent, but no hydrothermal activities were found near the other locations.

Original languageEnglish
Title of host publicationSubseafloor Biosphere Linked to Hydrothermal Systems
Subtitle of host publicationTAIGA Concept
PublisherSpringer Japan
Pages603-606
Number of pages4
ISBN (Electronic)9784431548652
ISBN (Print)9784431548645
DOIs
Publication statusPublished - Jan 1 2015

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trough
seafloor
electron spin resonance dating
seawater
water
hydrothermal vent
hydrothermal activity
barite
sea surface
sulfide
rate
dose

All Science Journal Classification (ASJC) codes

  • Earth and Planetary Sciences(all)

Cite this

Toyoda, S., Banerjee, D., Kumagai, H., Miyazaki, J., Ishibashi, J. I., Mochizuki, N., & Kojima, S. (2015). Gamma ray doses in water around sea floor hydrothermal area in the Southern Mariana trough. In Subseafloor Biosphere Linked to Hydrothermal Systems: TAIGA Concept (pp. 603-606). Springer Japan. https://doi.org/10.1007/978-4-431-54865-2_46

Gamma ray doses in water around sea floor hydrothermal area in the Southern Mariana trough. / Toyoda, Shin; Banerjee, Debabrata; Kumagai, Hidenori; Miyazaki, Junichi; Ishibashi, Jun Ichiro; Mochizuki, Nobutatsu; Kojima, Shigeaki.

Subseafloor Biosphere Linked to Hydrothermal Systems: TAIGA Concept. Springer Japan, 2015. p. 603-606.

Research output: Chapter in Book/Report/Conference proceedingChapter

Toyoda, S, Banerjee, D, Kumagai, H, Miyazaki, J, Ishibashi, JI, Mochizuki, N & Kojima, S 2015, Gamma ray doses in water around sea floor hydrothermal area in the Southern Mariana trough. in Subseafloor Biosphere Linked to Hydrothermal Systems: TAIGA Concept. Springer Japan, pp. 603-606. https://doi.org/10.1007/978-4-431-54865-2_46
Toyoda S, Banerjee D, Kumagai H, Miyazaki J, Ishibashi JI, Mochizuki N et al. Gamma ray doses in water around sea floor hydrothermal area in the Southern Mariana trough. In Subseafloor Biosphere Linked to Hydrothermal Systems: TAIGA Concept. Springer Japan. 2015. p. 603-606 https://doi.org/10.1007/978-4-431-54865-2_46
Toyoda, Shin ; Banerjee, Debabrata ; Kumagai, Hidenori ; Miyazaki, Junichi ; Ishibashi, Jun Ichiro ; Mochizuki, Nobutatsu ; Kojima, Shigeaki. / Gamma ray doses in water around sea floor hydrothermal area in the Southern Mariana trough. Subseafloor Biosphere Linked to Hydrothermal Systems: TAIGA Concept. Springer Japan, 2015. pp. 603-606
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