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AAR KR1, Mujin
Name Alias(es):
Misty Harbor
MGDS_FeatureID lowest in hierarchy:
Activity:
Latitude:
-62.1000
Longitude:
158.8000
Location on map:
Ocean:
Region:
National Jurisdiction:
Maximum or Single Reported Depth (mbsl):
2100
Tectonic setting:
Full Spreading Rate (mm/a):
65.1
Host Rock:
NotProvided
Deposit Type:
NotProvided
Notes on Vent Field Description:
Korea SEIR (Australian-Antarctic Ridge) 160 E and 152.5 E (Feb-Mar 2011) found signals of venting with MAPRs (Korea national report in 2011 InterRidge News); Park et al.(2012): "Plume signals indicating hydrothermal vents were found in the middle of KR1 where the most enriched basalts occur and the magma supply appears robust."; Korea national report in 2013 InterRidge News: " Using CTD Tow-yo, we confined the vent site (“Araon vent field”) within 2 km circle"; Baker et al. (2014): "Miniature Autonomous Plume Recorders (MAPRs) on rock corers in March and December of 2011 to survey each segment, and an intensive CTD survey in Jan/Feb 2013 to pinpoint sites and sample plumes on KR1"; "Forty profiles on KR1 identified 13 sites, some within a few km of each other. The densest site concentration on KR1 occurred along a relatively inflated, 90-km-long section near the segment center. CTD tows covered 20 km of the eastern, most inflated portion of this area, finding two 6-km-long zones centered near 158.6°E and 158.8°E with multiple plume anomalies. Three ORP anomalies within 50 m of the seafloor indicate precise venting locations. We call this area the Mujin "Misty Harbor" vent field."
Notes Relevant to Biology:
Won et al. (2014): "the first discovery of a new deep-sea hydrothermal vent field and a new anomuran species from the Australia-Antarctic Ridge (AAR), the highest latitude (62°S; 158°E) explored in the Southern Ocean up to date. At this site, a new anomuran species which belongs to the genus Kiwa known as 'yeti crabs' was found"
Year and How Discovered (if active, visual confirmation is listed first):
2011 plume and biological samples
Discovery References (text):
Park, S.H. (2011) Korea national report in InterRidge News: http://www.interridge.org/files/interridge/InterRidge%20News%20-%202011-sm.pdf
Park. S.H. et. al. (2012) Geochemistry of lavas from the Australian-Antarctic Ridge, easternmost Southeast Indian Ridge, AGU Fall meeting, V11D-2807 Poster
Baker et al. (2014) Abundant Hydrothermal Venting in the Southern Ocean Near 62°S/159°E on the Australian-Antarctic Ridge. American Geophysical Union, Fall Meeting 2014, abstract #OS53C-1057.
Won et al. (2014) A New Species of the Genus Kiwa (Decapoda: Anomura) from the Hydrothermal Vent of the Australia-Antarctic Ridge. American Geophysical Union, Fall Meeting 2014, abstract #OS51E-08.
RDF link: