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SWIR, Plume 2, Segment 16

Name Alias(es): 
Vent Sites: 
Maximum Temperature: 
Location on map: 
National Jurisdiction: 
Maximum or Single Reported Depth (mbsl): 
Minimum Depth (mbsl): 
Tectonic setting: 
Full Spreading Rate (mm/a): 
Volcano Number (if applicable): 
Host Rock: 
Deposit Type: 
Notes on Vent Field Description: 
Convincing evidence of active hydrothermal circulation on an ultra-slow ridge was first discovered in 1997 at several locations between 58.2° and 65.8°E on the Southwest Indian Ridge (SWIR) during a plume survey using optical sensors; German et al. (1998): "the strongest of the plumes identified during our survey: plume 2"; failed to find active vent on Shinkai 6500 dive in 1998
Notes Relevant to Biology: 
Year and How Discovered (if active, visual confirmation is listed first): 
1997 plume only
Discovery References (text): 
(plume only) German et al., Nature 395, 490-493, 1998, Hydrothermal activity along the southwest Indian ridge.
Other References (text): 
SOHRIN et al. (1999) CTD observations to search for hydrothermal activity on the Southwest Indian Ridge and the Central Indian Ridge just north of the Rodriguez Triple Junction: the Yokosuka/Shinkai MODE'98 Leg 3 INDOYO cruise. JAMSTEC Journal of Deep Sea Research 15: 7-11
Sauter et al. (2002) TOBI sidescan sonar imagery of the very slow-spreading Southwest Indian Ridge: evidence for along-axis magma distribution. Earth and Planetary Science Letters 199: 81-95.