|Title||Probing the till beneath Black Rapids Glacier, Alaska, USA|
|Author(s)||William D Harrison , Martin Truffer, Keith Echelmeyer, Dale A Pomraning, Kevin A Abnett, Richard H Ruhkick|
Journal of Glaciology
A heavy down-hole hammer actuated from the surface by a light composition rope was used to place instrumented probes into the active, 7m thick, clast-rich till underlying a site on Black Rapids Glacier, Alaska, USA, where the ice is 500m thick. A till penetration of about 2.5m 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.
|Categories||Subglacial Access, Subglacial Till/Bedrock Drilling|
|Citation||William D Harrison , Martin Truffer, Keith Echelmeyer, Dale A Pomraning, Kevin A Abnett, Richard H Ruhkick ( 2004 ) Probing the till beneath Black Rapids Glacier, Alaska, USA. Journal of Glaciology , 50 , 171 , 608-614 . doi: 10.3189/172756504781829693|