The Electrothermal Drill melts an annulus around the ice cores it collects. It supplements the 4-Inch drills and can be substituted for the 4-Inch sonde, using the same winching system, for use in ice warmer than about minus 10° C. The drill collects a 3-inch (76 mm) core. It is particularly useful in ice close to the pressure melting point, where electromechanical drills are at risk from melting and refreezing of the surrounding ice. Much simpler than the electromechnical drills, the electrothermal drill has performed well in British Columbia, Alaska and in southeastern Greenland. Using a scaled-down, lightweight setup, the drill was tested by an investigator on McCall Glacier, Alaska, in spring 2012. The drill was most recently deployed and used successfully to drill through firn aquifer layers in SE Greenland during spring 2013 and spring 2015.
|Number in Inventory:||1|
|Max. Depth Possible:||200 meters|
|Core Diameter:||86 mm|
|IDDO Driller Required?:||Yes|
|Shipping Weight:||1200 lbs|
|Comments:||Shipping weight includes generator and 100 meter winch sled; complete operating weight is 800 lbs|