Dating ice flow change near the flow divide at Roosevelt Island, Antarctica, by using a thermomechanical model to predict radar stratigraphy

• Published in: Journal of Geophysical Research
• Main Authors: Martin, Carlos, Hindmarsh, Richard C.A., Navarro, Francisco J.
• Format: Article in Journal/Newspaper
• Language: unknown
• Published: American Geophysical Union 2006
• Subjects: Glaciology; Antarctic; West Antarctic Ice Sheet; Ross Ice Shelf; Conway; Roosevelt Island; Antarc*; Antarctica; Ice Sheet; Ice Shelf
• Online Access: http://nora.nerc.ac.uk/id/eprint/81/

Radar-detected internal layering contained in some ice divides shows upwarped arches termed Raymond bumps. The distribution of their amplitude with height can date the onset of divide flow, reflecting changes in the basin structure of the ice sheet. The distribution depends on rheology, surface geom...