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Probing the till beneath Black Rapids Glacier, Alaska, USA
Authors: Harrison WD, Truffer M, Echelmeyer KA, Pomraning DA, Abnett KA and Ruhkick RH
Year: 2004
Periodical/Journal: Journal of Glaciology
Volume: 50
Number: 171
Page Range: 608-614

A heavy down-hole hammer actuated from the surface by a light composition rope was used to place instrumented probes into the active, 7 m thick, clast-rich till underlying a site on Black Rapids Glacier, Alaska, USA, where the ice is 500 m thick. A till penetration of about 2.5 m was obtained, and greater depths seem possible. The probes measured pore-water pressure and two axes of tilt, which they broadcasted, without wires, to a receiver just above the ice-till interface.

DOI: 10.3189/172756504781829693
URL: View document