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March 20, 2026Journal of the Japan Institute of EnergyOpen Access

Methane Gas Recovery from a Methane Plume on a Seafloor in Sea of Japan

Hiroaki Watanabe Tatsuro MOCHINAGA Takuro Sasaki Tsuyoshi TAKENOUCHI C. Aoyama

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Key Points

The aim is to recover methane gas from a seafloor plume in the Sea of Japan.
Designed and constructed a continuous gas collection device
Conducted collection tests at approximately 150 m water depth
Utilized a gas-liquid separator to analyze collected gas
Confirmed the collection device can recover gas and surrounding seawater
Analysis revealed a consistent concentration of methane gas in the collected sample
Identified gas as originating from the seafloor methane plume

Implication

Experimentation demonstrates effective methane recovery from a seafloor plume, indicating gas potential.

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Cite This Study

Watanabe et al. (2026) studied this question.

synapsesocial.com/papers/69cd7a095652765b073a6d0c https://doi.org/10.3775/jie.105.79

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