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Record #117671:

Borehole logging in Alpine permafrost, upper Engadin, Swiss Alps / Daniel S. Vonder Mühll, Petr Holub.

Title: Borehole logging in Alpine permafrost, upper Engadin, Swiss Alps / Daniel S. Vonder Mühll, Petr Holub.
Author(s): Mühll, Daniel S. Vonder.
Holub, Petr.
Date: 1992.
In: Permafrost and Periglacial Processes. (1992.), Vol. 3(2) (1992)
Abstract: Measurements made on Murtèl-Corvatsch and Pontresina-Schafberg rock glaciers. Permafrost thicknesses of about 70 m found where annual surface temperatures are between -1 and -3 C. Main problem was filling of bore hole with water. Ice contents of frozen debris range from 15 to 30% (ice-saturated) to well above 50% (supersaturated). Acoustic velocity was constant at 3700 m s⁻¹. In bedrock of Pontresina-Schafberg rock glacier, dc resistivity drops over order of magnitude, with temperature rising from -1 to 0°C.
Notes:

Permafrost and Periglacial Processes. Vol. 3(2) :125-132 (1992).

Keywords: 551.34 -- Geocryology. Frozen ground.
551.341 -- Permafrost and frozen ground, equipment for investigating.
551.343 -- Periglacial processes. Thermokarst.
551.343.4 -- Rock glaciers.
551.345.1 -- Permafrost, surveys.
E8 -- Glaciology: frost action and permafrost.
(494) -- Switzerland.
(234.3) -- Alps.
SPRI record no.: 117671

MARCXML

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100 1# ‡aMühll, Daniel S. Vonder.
245 10 ‡aBorehole logging in Alpine permafrost, upper Engadin, Swiss Alps /‡cDaniel S. Vonder Mühll, Petr Holub.
260 ## ‡a[S.l.] :‡b[s.n.],‡c1992.
300 ## ‡ap. 125-132 :‡bdiags., map.
500 ## ‡aPermafrost and Periglacial Processes. Vol. 3(2) :125-132 (1992).
520 3# ‡aMeasurements made on Murtèl-Corvatsch and Pontresina-Schafberg rock glaciers. Permafrost thicknesses of about 70 m found where annual surface temperatures are between -1 and -3 C. Main problem was filling of bore hole with water. Ice contents of frozen debris range from 15 to 30% (ice-saturated) to well above 50% (supersaturated). Acoustic velocity was constant at 3700 m s⁻¹. In bedrock of Pontresina-Schafberg rock glacier, dc resistivity drops over order of magnitude, with temperature rising from -1 to 0°C.
650 07 ‡a551.34 -- Geocryology. Frozen ground.‡2udc
650 07 ‡a551.341 -- Permafrost and frozen ground, equipment for investigating.‡2udc
650 07 ‡a551.343 -- Periglacial processes. Thermokarst.‡2udc
650 07 ‡a551.343.4 -- Rock glaciers.‡2udc
650 07 ‡a551.345.1 -- Permafrost, surveys.‡2udc
650 07 ‡aE8 -- Glaciology: frost action and permafrost.‡2local
651 #7 ‡a(494) -- Switzerland.‡2udc
651 #7 ‡a(234.3) -- Alps.‡2udc
700 1# ‡aHolub, Petr.
773 0# ‡7nnas ‡tPermafrost and Periglacial Processes. ‡gVol. 3(2) (1992) ‡wSPRI-102743
917 ## ‡aUnenhanced record from Muscat, imported 2019
948 3# ‡a20220927