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SUMMARY:The Pleistocene Evolution of the Antarctic Circumpolar Current: An
  Interglacial Perspective - Aidan Starr\, Department of Geography
DTSTART:20231018T163000Z
DTEND:20231018T180000Z
UID:TALK206080@talks.cam.ac.uk
CONTACT:Jinheum Park
DESCRIPTION:The Antarctic Circumpolar Current (ACC) is today the world's l
 argest ocean current\, dominating the transfer of heat\, salt\, and tracer
 s around the Southern Ocean. The ACC also helps to draw carbon-rich deep w
 aters to the surface\, prying open the window between the ocean interior a
 nd the atmosphere. In this talk\, I will present a new 1.9 Million Year re
 cord of deep flow speeds at the northern edge of the ACC. Using this recor
 d as a proxy for the vigour/latitudinal position of the Subantarctic Front
  jet\, I show that the ACC responds sensitively to climate forcing through
  the Pleistocene. In particular\, I will focus on anomalously intense reor
 ganisations of the ACC which occur during "super-interglacial" intervals\,
  punctuating the glacial-interglacial pattern and providing potential clue
 s into how Southern Ocean circulation might respond to ongoing and future 
 warming.  
LOCATION: Harker 1\, Department of Earth Sciences\, Downing Street
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