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Taketomi Thermal Area

Name Alias(es): 
Taketomi-jima
Vent Sites: 
Sekisei Lagoon
Maximum Temperature: 
52
Latitude: 
24.3483
Longitude: 
124.1017
Location on map: 
Ocean: 
Region: 
National Jurisdiction: 
Maximum or Single Reported Depth (mbsl): 
23
Minimum Depth (mbsl): 
10
Tectonic setting: 
Full Spreading Rate (mm/a): 
Volcano Number (if applicable): 
Host Rock: 
NotProvided
Deposit Type: 
NotProvided
Notes on Vent Field Description: 
Coastal Japan (Okinawa); shallow submarine hydrothermal system associated with a subtropical coral reef (http://ir.lib.u-ryukyu.ac.jp/bitstream/123456789/11327/4/15310013-4.pdf); Hirayama et al. (2007): "The vent fluid (maximum temperature, >52°C) contained 175 μM H2S and gas bubbles mainly composed of CH4 (69%) and N2 (29%)."
Notes Relevant to Biology: 
Hirayama et al. (2007): "Our results indicate that there are unique microbial communities that are sustained by active chemosynthetic primary production rather than by photosynthetic production in a shallow hydrothermal system where sunlight is abundant."
Year and How Discovered (if active, visual confirmation is listed first): 
1987 or earlier, likely by SCUBA
Discovery References (text): 
[Oomori T (1987) Chemical compositions of submarine hot spring water and associated bottom sediments near Taketomi-jima at Southern Part of the Ryukyu Island Arc, North-west Pacific. Journal of Earth Science Nagoya University 35:325–340].
Other References (text): 
Nakamura et al. (2006) Acroporid corals growing over a methane-bubbling hydrothermal vent, Southern Ryukyu Archipelago. Coral Reefs 25:382, DOI:10.1007/s00338-006-0107-8
Hirayama et al. (2007) Culture-Dependent and -Independent Characterization of Microbial Communities Associated with a Shallow Submarine Hydrothermal System Occurring within a Coral Reef off Taketomi Island, Japan. Appl Environ Microbiol. 73(23): 7642–7656.