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SUMMARY:Dynamic processes in a supercooled ISW plume: tales from the Victo
 ria Land Coast Current - Natalie Robinson (NIWA\, New Zealand)
DTSTART:20190923T100000Z
DTEND:20190923T110000Z
UID:TALK130885@talks.cam.ac.uk
CONTACT:Dr Ryan Patmore
DESCRIPTION:Robinson\, Langhorne\, Brett\, Stevens\, Rack\, Stewart\, Leon
 ard\, Williams\, Grant\, de Joux\n\nThe past decade has seen New Zealand-b
 ased researchers apply a variety of methods to considerably advance unders
 tanding of the Victoria Land Coastal Current (VLCC). The VLCC is a signifi
 cant and consistent flow of supercooled Ice Shelf Water through Western Mc
 Murdo Sound\, sourced from the ocean cavity beneath the Ross Ice Shelf. He
 re we summarise several ice-ocean processes\, unique to supercooled water\
 , which we have investigated over multiple field seasons. These include am
 plified boundary roughness generated by thick accumulations of platelet ic
 e crystals\, active quenching of supercooling along the flow path\, and an
  active process of ice-ocean interaction that stabilizes the supercooling 
 over tidal cycles. In quantifying these processes\, it has been necessary 
 to apply measurement protocols developed as a result of our repeated and s
 ustained experience deploying instruments into significantly supercooled w
 ater. These protocols identify\, mitigate against\, and eliminate data cor
 ruption that can routinely occur when direct observations are made in wate
 r near\, or below\, the freezing temperature. The VLCC has thus provided a
 n accessible natural laboratory to develop understanding and observational
  techniques that are likely to be relevant wherever supercooled Ice Shelf 
 Water arises.
LOCATION:British Antarctic Survey\, Innovation Centre\, Seminar Room 2
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