Porosity, permeability, and grain size of sediment cores from gas-hydrate-bearing sites and their implication for overpressure in shallow formations: Results from NGHP-02, Krishna-Godavari Basin, India


Wataru Tanikawa1, Takehiro Hirose2, Yohei Hamada2, Lallan P. Gupta3, Naokazu Ahagon1, Yuka Masaki4, Natsue Abe1, Hung-Yu Wu5, Takamitsu Sugihara6, Shun Nomura1, Weiren Lin7, Masataka Kinoshita8, Yuzuru Yamamoto9 and Yasuhiro Yamada10, (1)JAMSTEC Japan Agency for Marine-Earth Science and Technology, Kanagawa, Japan, (2)JAMSTEC, Kochi Institute for Core Sample Research, Nankoku, Japan, (3)JAMSTEC, Nankoku, Japan, (4)IFREE/JAMSTEC, Yokosuka, Japan, (5)Institute for Research on Earth Evolution, Japan Agency for Marine-Earth Science and Technology, Kanagawa, Japan, (6)Marion-Kanazawa 202, Yokohama, Japan, (7)Kyoto University, Kyoto, Japan, (8)Japan Agy Marine Sci Tech, Nankoku Kochi, Japan, (9)JAMSTEC, Yokohama, Japan, (10)Kyoto Univ, Kyoto, Japan