@article{oai:u-ryukyu.repo.nii.ac.jp:02008863,
 author = {土岐, 知弘 and 本田, 龍太郎 and 高畑, 直人 and 大嶺, 一希 and 木下, 正高 and 山城, 秀之 and 角皆, 潤 and 小松, 大祐 and 佐野, 有司 and Toki, Tomohiro and Honda, Ryutaro and Oomine Kazuki and Tsunogai, Urumu and Komatsu, Daisuke D and Sano, Yuji and Takahata, Naoto and Kinoshita, Masataka and Yamashiro, Hidetuki},
 issue = {4},
 journal = {地球化学},
 month = {Dec},
 note = {Chemical and isotopic compositions of seeping gas from the coastal area of Yagaji Island were measured. The gases composed mainly of methane. The δ13C and δD of methane suggest that the origin of the methane is thermal decomposition of organic matter. The δ13C of methane and CH4/(C2H6+C3H8) ratio in the gases suggest long distance migration from the sources. The 3He/4He ratios in the Yagaji gases suggest thermal decomposition of organic matter occurs in deeply-buried sediments. The Yagaji gases would be generated from marine organic matter in the Motobu group around 4 km below the ground., 論文},
 pages = {257--274},
 title = {沖縄本島北部屋我地島沿岸における湧出ガスの起源},
 volume = {46},
 year = {2012}
}