Helium isotopes in deep seawater and sediment in the Tohoku Region: Revisit in 2016

Ma.Teresa Escobar; 鹿児島 渉悟; 高畑 直人; 白井 厚太朗; 田中 健太郎; Jin―Oh Park; 佐野 有司

doi:10.14862/geochemproc.64.0_106

Abstracts of Annual Meeting of the Geochemical Society of Japan

DOI https://doi.org/10.14862/geochemproc.64.0_106

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Host: Abstracts of Annual Meeting of the Geochemical Society of Japan

Helium isotopes in deep seawater and sediment in the Tohoku Region: Revisit in 2016

*Ma.Teresa Escobar, Takanori Kagoshima, Naoto Takahata, Kotaro Shirai, Kentaro Tanaka, Jin―Oh Park, Yuji Sano

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Keywords: helium isotopes, Japan Trench, earthquake

CONFERENCE PROCEEDINGS FREE ACCESS

Pages 106-

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Abstract

In November 2016, we revisited the sites near the epicenter of the 2011 Tohoku-Oki earthquake to collect seawater and sediment samples. Sediment pore water results show that detectable mantle-derived He provided by high-pressure fluids during the 2011 Tohoku-oki earthquake may not exist any more in the area.

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