January 2016

New Lab Member

Kristin Poinar started working at the laboratory as a postdoctoral fellow after obtaining her Ph.D. at University of Washington. She examines how the shear margins affect the flow of Jakobshavn Isbrae, a large glacier in western Greenland. Shear margins are areas of ice that become heavily crevassed and broken up due to the fast motion of the glacier. Because the glacier has been moving faster in recent years, scientists think that the shear margins have become even more broken up and weakened, which would allow the glacier to move even faster. Kristin is using a combination of ice-sheet models and elevation and radar data from Operation IceBridge to investigate changes in the shear margins and how much they control the motion of the Jakobshavn Glacier, which is one of the wildcards in Greenland’s future contribution to global sea level.