Notes on Vent Field Description:
Cruise NT10-16 report: ROV Hyperdolphin dive 1181: "At the last dive of the cruise (#1182), we visited the novel hydrothermal area to survey in detail. A temperature sensor was equipped on the HPD to measure temperature of hydrothermal fluid.... The highest temperature measured during this dive was 247 C at Achijah (Hot-tea in Okinawan Japanese) site."; Fukuba et al. (2015): "shallowest hydrothermal site in the Okinawa Trough was discovered at the northeastern slope of the crater.", "area including the Yoron Hole and the surrounding volcanic topographies was provisionally named as the North-East (NE) Izena or the Yoron Knoll", "small clear smoker chimneys (10-30 cm tall) at the north slope... maximum hydrothermal fluid temperature was 247 C. In the south slope... large active chimney gushing clear... 85 C"
Notes Relevant to Biology:
Fukuba et al. (2015): "density and diversity were scant in comparison to fauna of the Iheya Knoll or the Izena Hole"
Year and How Discovered (if active, visual confirmation is listed first):
Discovery References (text):
Fukuba, T., et al. (2015) The Yoron Hole: The Shallowest Hydrothermal System in the Okinawa Trough. pp. 489-492 in Ishibashi, J. et al. (eds) Subseafloor Biosphere Linked to Hydrothermal Systems. Springer. doi:10.1007/978-4-431-54865-2_38.