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VFR, ELSC7

Name Alias(es): 
MGDS_FeatureID lowest in hierarchy: 
Vent Sites: 
Activity: 
Maximum Temperature: 
Latitude: 
-22.8833
Longitude: 
-176.7500
Location on map: 
Ocean: 
Region: 
National Jurisdiction: 
Maximum or Single Reported Depth (mbsl): 
2050
Minimum Depth (mbsl): 
Tectonic setting: 
Full Spreading Rate (mm/a): 
36.7
Volcano Number (if applicable): 
Host Rock: 
NotProvided
Deposit Type: 
NotProvided
Notes on Vent Field Description: 
Crowhurst et al. (2009): "new venting field discoveries at ...far southern Valu Fa ridge are beyond any previously known areas of hydrothermal activity"; position from Fig.1, intersection of three tow lines in cruise report SS02/2009 (http://www.marine.csiro.au/nationalfacility/voyagedocs/2009/MNF-SS2-09_sum.pdf): "a good Eh anomaly with associated weak ΔNTU anomaly at a depth of about 1950m."; note: added 100m to plume depth for approximate water depth
Notes Relevant to Biology: 
Year and How Discovered (if active, visual confirmation is listed first): 
2009 plume and dredge only
Discovery References (text): 
Cruise SS02/2009: Hydrothermal plume and structural geology mapping in the Tonga/Fiji region (http://www.marine.csiro.au/nationalfacility/voyagedocs/2009/MNF-SS2-09_sum.pdf)
Crowhurst et al. (2009) Discovery of new hydrothermal venting sites in the Lau Basin, Tonga Back-Arc. AGU Fall Meeting abstract #OS13A-1180.
Other References (text):