Notes on Vent Field Description:
Yamanaka et al. (2015): "knoll lies almost at the foot of the south fault scarp in the rift graben of the southern Okinawa Trough", "During the KT05-26 cruise... a methane anomaly was detected near the seafloor around the area and was considered to be of possible hydrothermal origin", "Weak shimmering of clear warm fluid (up to 23 C) was found on the southwestern slope near the summit at a depth of 1510-1540 m in an area covered with red-brown sediment", "observed dense turbid water (possibly hydrothermal plume water)", ROV HyperDolphin dives in 2009, 2010, 2011; Okino et al. (2015): AUV Urashima dives 182 and 183 in 2014, "Previous ROV survey reported a low temperature shimmering hosted by rhyolitic rocks at the top of the knoll and the extent of turbid seawater at the southern slope of the knoll that may indicate an existence of unknown high temperature hydrothermal vent site"
Notes Relevant to Biology:
Year and How Discovered (if active, visual confirmation is listed first):
Discovery References (text):
Yamanaka, T., et al. (2015) The Tarama Knoll: Geochemical and Biological Profiles of Hydrothermal Activity. pp. 497-504 in Ishibashi, J. et al. (eds) Subseafloor Biosphere Linked to Hydrothermal Systems. Springer Japan. doi:10.1007/978-4-431-54865-2_40.
Other References (text):
Okino, K. et al. (2015) Preliminary report of AUV URASHIMA dives at Tarama and Irabu hydrothermal fields. Japan Geosience Union Meeting 2015, abstract SCG64-09.