Unit Affiliation: Marine and Polar Geophysics, Lamont-Doherty Earth Observatory (LDEO)
The research will examine how subglacial lakes trigger faster ice streaming by using satellite imagery, aerogeophysical profiles, and continuous GPS sites. This will: enable the production of velocity fields; allow mapping of the ice thickness changes due to acceleration triggered thinning, basal melting, and freezing; determine the depth and tectonic orgin of the Recovery Lakes; and determine the stability of these lakes over time.
OUTCOMES: Found: that Recovery Lakes C and D contain very little water; the tectonic framework likely plays a major role in the lake's water budget abd basal lubrication of the ice stream; a gravity low, smooth bed, and deep source of magnetic anomalies suggest the presence of 1-3km of sediments beneath Lakes C and D; and that fill times for the lakes depends on if water is diverted by the Gamburtsev Mountains.
Ice sheet Dynamics and Processes along the West Antarctic Continental Shelf
Laboratory study of glacier-bedrock dynamics using centrifuge-enhanced gravity
Laboratory study of ice deformation under tidal loading conditions with application to Antarctic glaciers