Probing the till beneath Black Rapids Glacier, Alaska, USA

Title Probing the till beneath Black Rapids Glacier, Alaska, USA
Publication Type
Journal Article
Year
2004
Author(s) William D Harrison , Martin Truffer, Keith Echelmeyer, Dale A Pomraning, Kevin A Abnett, Richard H Ruhkick
Journal/ Publication
Journal of Glaciology
Volume
50
Issue
171
Pagination
608-614
Abstract

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 iceā€“till interface.

DOI
10.3189/172756504781829693
URL
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
Lead Author
William D Harrison