@book{oai:u-ryukyu.repo.nii.ac.jp:02008855,
 author = {Yamanaka, Toshiro and Nagashio, Hiromi and Nishio, Ryu and Kondo, Kazuna and Noguchi, Takuroh and Okamura, Kei and Nunoura, Takuro and Makita, Hiroko and Nakamura, Kentaro and Watanabe, Hiromi and Inoue, Kazuhiro and Toki, Tomohiro and Iguchi, Kouichiro and Tsunogai, Urumu and Nakada, Ryoichi and Ohshima, Shogo and Toyoda, Shin and Kawai, Jun and Yoshida, Naohiro and Ijiri, Akira and Sunamura, Michinari},
 month = {Jan},
 note = {Tarama Knoll is located about 60 km north of Tarama Island, Sakishima Islands, southwestern Japan. The knoll has an almost conical shape, with foot and summit depths of 2,000 and 1,490 m (total relief = 510 m) from the sea surface, respectively. This area has been identified as a possible active submerged volcano called “Tarama Knoll” (Otani et al. 2004). However, there are actually two separate knolls in the area. This knoll is located northeast of the other, which is named Tarama Hill. During the KT05-26 cruise on the R/V Tanseimaru, a methane anomaly was detected near the seafloor around the area and was considered to be of possible hydrothermal origin. Based on visual observation of the seafloor and its bathymetry, this knoll is considered a pumice cone. Dense turbid water is often observed around summit of the knoll, and a methane anomaly was detected in the water. These observations suggest that the turbid water is a hydrothermal plume. An iron-rich, red-brown sediment-covered area was discovered at a depth of 1,510–1,540 m on the southwestern slope near the summit. At the red-brown sediment area, a weak shimmering of clear fluid could be observed, and the fluid temperature reached 20 °C. Sampled shimmering fluid showed a high silica concentration (≥1 mM), indicating an interaction between the fluid and the surrounding rock. These chemical data support the occurrence of active hydrothermal circulation at Tarama Knoll., 図書の１章},
 publisher = {Springer Japan},
 title = {Tarama Knoll: Geochemical and biological profiles of hydrothermal activity},
 year = {2015}
}