Title	Numerical modeling of ocean-ice interactions under Pine Island Bay's Ice Shelf
Author	Payne, A.J.; Holland, P.R.; Shepherd, A.P.; Rutt, I.C.; Jenkins, A.; Joughin, I.
Author Affil	Payne, A.J., University of Bristol, Centre for Polar Observation and Modeling, Bristol, United Kingdom. Other: British Antarctic Survey, United Kingdom; University of Cambridge, United Kingdom; University of Washington
Source	Journal of Geophysical Research, 112( C10), C10019. Publisher: American Geophysical Union, Washington, DC, United States. ISSN: 0148-0227
Publication Date	Oct. 8, 2007
Notes	In English. 35 refs. GeoRef Acc. No: 284584. CRREL Acc. No: 62004955
Index Terms	distribution; glacial geology; global change; global warming; ice; ice shelves; melting; ocean bottom; temperature; topography; Southern Ocean--Ross Sea; Antarctica--West Antarctica; Amundsen Sea; Antarctica; boundary conditions; numerical models; ocean circulation; ocean floors; ocean-ice interactions; Pine Island Bay; Pine Island Glacier; rates; Ross Sea; sea ice; Southern Ocean; two-dimensional models; West Antarctica
Abstract	A two-dimensional numerical model is used to simulate the dynamics of buoyant, meltwater- rich plumes flowing beneath the ice shelf occupying much of Pine Island Bay, West Antarctica. Recent studies have shown that this ice shelf, along with all others fringing the Amundsen Sea, is thinning rapidly. In the model, both the Coriolis effect and subshelf topography are important in controlling plume dynamics and the spatial distribution of ice melt. The plume generated by entrainment of ambient water into the meltwater in these areas is guided by the topography of the ice shelf underside and exits the ice shelf at three distinct outflow locations. The model suggests that the observed ice shelf thinning rates could have resulted from a hypothetical instantaneous 0.25°C warming of the ambient water entrained by the plume. (mod. journ. abst.)
URL	http://hdl.handle.net/10.1029/2006JC003733
Publication Type	journal article
Record ID	84131