Core sites used to investigate the flow of the Western Boundary Undercurrent (WBUC) during different climate states (Thornalley et al. submitted)
The response of the Western Boundary Undercurrent to past abrupt climate change
Lloyd Keigwin (WHOI); Stephen Barker & Ian Hall (Cardiff)
Deep water produced in the high latitude North Atlantic forms a deep western boundary current (locally termed the Western Boundary Undercurrent, WBUC) that flows southward, at depth, along the eastern margin of North America. The WBUC plays an important role in rapidly transmitting climate signals into the ocean interior and helping ventilate the world’s ocean. I am using grain size analysis to examine how the flow speed structure of the WBUC altered between warm and cold climate intervals during the last glacial period.