Description
Bernd Dachwald, IceMole, FH-Aachen 20 min
Slawek Tulaczyk, UC-Santa Cruz 20 min
Don Blankenship, U of Texas at Austin 20 min
Vladimir Lipenkov, AARI, St. Petersburg, Russia 20 min
Panel discussion with the 4 speakers 40 min
Prof.
Bernd Dachwald
(FH Aachen University of Applied Sciences)
27/04/2011, 14:00
Subglacial Lakes
We present the novel concept of a combined drilling and melting probe for subsurface ice research. This “subsurface icecraft”, named “IceMole”, is currently developed, built, and tested at the FH Aachen University of Applied Sciences’ Astronautical Laboratory. Here, we describe the IceMole’s first prototype design and report the results of its first field tests on the Morteratsch glacier in...
Prof.
Slawek Tulaczyk
(Department of Earth and Planetary Sciences, University of California, Santa Cruz)
27/04/2011, 14:20
Subglacial Lakes
Water is produced at the base of polar ice sheets when geothermal heat and basal shear heating exceed conductive heat escape. Published estimates of subglacial water production rates in Antarctica vary between an average of about 3 and 6 mm per year per unit bed area. This rate of production is almost two orders of magnitude smaller than the mean snow accumulation rate on top of the ice...
D.D. Blankenship
(Institute for Geophysics, U of Texas)
27/04/2011, 14:40
Subglacial Lakes
The evolution of the East Antarctic ice sheet surrounding the South Pole has been complex. Previous work using airborne radar sounding has indicated that the tributaries of major ice streams have reached the South Pole, but details of the position and timing of flow regime change have been unknown. We will present an analysis of internal layering observed in airborne radar sounding data...
Dr
Vladimir Lipenkov
(Arctic and Antarctic Research Institute)
27/04/2011, 15:00
Subglacial Lakes
It is now recognized that subglacial water has been playing significant role in many processes that have shaped the Antarctic continent and its ice sheets today and in the past. Lake Vostok is an essential element of the Antarctic subglacial hydrological system and the largest known subglacial lake on Earth (with an area of about 16,000 km2 and the water volume exceeding 6,000 km3). The...
