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Tonga Arc, Volcano 4

Name Alias(es): 
MGDS_FeatureID lowest in hierarchy: 
Vent Sites: 
Activity: 
Maximum Temperature: 
Latitude: 
-22.0670
Longitude: 
-176.2080
Location on map: 
Ocean: 
Region: 
National Jurisdiction: 
Maximum or Single Reported Depth (mbsl): 
200
Minimum Depth (mbsl): 
Tectonic setting: 
Full Spreading Rate (mm/a): 
Volcano Number (if applicable): 
Host Rock: 
NotProvided
Deposit Type: 
NotProvided
Notes on Vent Field Description: 
depth approximate; cruise SS02/2003 summary (http://www.marine.csiro.au/nationalfacility/voyagedocs/2003/0203s.htm): "tow-yo (T03B-25) over the summit region of Volcano 4 (South) detected a particle plume at about 100 m depth, but until the on-shore chemical analyses are completed, it is not certain if this is from the near-surface biota or hydrothermal in origin"
Notes Relevant to Biology: 
Year and How Discovered (if active, visual confirmation is listed first): 
2003 plume and dredge only
Discovery References (text): 
(plume and dredge only) cruise SS02/2003 summary (http://www.marine.csiro.au/nationalfacility/voyagedocs/2003/0203s.htm).
Other References (text): 
Arculus "Arc-backarc systems of northern Kermadec-Tonga" (http://www.crownminerals.govt.nz/cms/pdf-library/minerals/conferences-1/045_papers_44.pdf)