BEGIN:VCALENDAR
VERSION:2.0
PRODID:-//Talks.cam//talks.cam.ac.uk//
X-WR-CALNAME:Talks.cam
BEGIN:VEVENT
SUMMARY:The transient response of ice-shelf melting to ocean change - Paul
  Holland (BAS)
DTSTART:20170313T130000Z
DTEND:20170313T140000Z
UID:TALK70510@talks.cam.ac.uk
CONTACT:Doris Allen
DESCRIPTION:Changes in ocean melting of ice shelves are important to sea-l
 evel rise and ocean water mass transformations.  Idealised modelling studi
 es find that the melting of ice shelves varies as a quadratic function of 
 ocean temperature. The ocean warms\, the buoyant meltwater-driven circulat
 ion accelerates\, and the melting increases as the product of the two. How
 ever\, this result is derived from a series of equilibrium simulations\, w
 here ice shelves are subjected to a given thermal forcing until the melt r
 ate becomes steady. In this talk I will consider instead the transient res
 ponse of ice shelves to ocean temperature change\, using unsteady simulati
 ons of ice shelves subjected to an oscillating temperature. For ‘slowly-
 varying’ forcing\, the melt rate varies along the quadratic equilibrium 
 curve\, but for ‘rapidly-varying’ forcing the melting deviates from th
 e curve in interesting ways. Ice shelves forced by warm water have high me
 lt rates\, high sensitivity of those melt rates to ocean temperature chang
 e\, and a short timescale over which that high sensitivity is manifest.\n\
 n
LOCATION:MR5\, Centre for Mathematical Sciences
END:VEVENT
END:VCALENDAR