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Probing the till beneath Black Rapids Glacier, Alaska, USA

  • William D. Harrison (a1), Martin Truffer (a1), Keith A. Echelmeyer (a1), Dale A. Pomraning (a1), Kevin A. Abnett (a1) and Richard H. Ruhkick (a1)...

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 ice–till interface.

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References

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Probing the till beneath Black Rapids Glacier, Alaska, USA

  • William D. Harrison (a1), Martin Truffer (a1), Keith A. Echelmeyer (a1), Dale A. Pomraning (a1), Kevin A. Abnett (a1) and Richard H. Ruhkick (a1)...

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