About KAKUWA YOSHITAKA
About 明治大 ガスハイドレート研
About MATSUMOTO RYO
About 明治大 ガスハイドレート研
About Sea of Japan
About sedimentary structure
About offshore drilling
About reserves
About methane hydrate
About unusual sedimentary structure
About チムニー構造
About Petroleum and gas deposits
About Mine estimation
About 日本海東縁
About ガスハイドレート
About 資源量
About 把握
About チムニー
About 掘削