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CLSC, plumes on CL1
Name Alias(es):
MGDS_FeatureID lowest in hierarchy:
Vent Sites:
Activity:
Maximum Temperature:
Latitude:
-17.8667
Longitude:
-176.3833
Location on map:
Ocean:
Region:
National Jurisdiction:
Maximum or Single Reported Depth (mbsl):
2250
Minimum Depth (mbsl):
Tectonic setting:
Full Spreading Rate (mm/a):
83.2
Host Rock:
NotProvided
Deposit Type:
NotProvided
Notes on Vent Field Description:
approx. position from Fig.3, targets generated by cruise SS02/2009 (http://www.marine.csiro.au/nationalfacility/voyagedocs/2009/MNF-SS2-09_sum.pdf): "tow line CL1_TY_1.Two plume signatures were discovered on this line. The first is a moderate NTU plume with a very weak Eh response corresponding to where the target NS ridge crosses an older EW ridge. This plume is at 2150m depth. Further north into a basin, a very sharp and stratified NTU plume was seen higher in the water column at around 2000m. The source area for this plume is not clear as it is 300m+ off the seafloor and the nearest shallower terrain is over 3km away."
Notes Relevant to Biology:
Year and How Discovered (if active, visual confirmation is listed first):
2009 plume 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):
RDF link: