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Record #164659:

Characteristics of a crater glacier at Ushkovsky volcano, Kamchatka, Russia, as revealed by the physical properties of ice cores and borehole thermometry / Takayuki Tarawa, and 8 others.

Title: Characteristics of a crater glacier at Ushkovsky volcano, Kamchatka, Russia, as revealed by the physical properties of ice cores and borehole thermometry / Takayuki Tarawa, and 8 others.
Author(s): Tarawa, Takayuki.
Date: 2001.
In: Journal of Glaciology. (2001.), Vol. 47(158) (2001)
Abstract: Aims to clarify characteristics of a glacier that fills an active volcanic crater by investigating the mass balance and subsurface temperature of glacier at summit of Ushkovsky volcano. Reports drilling of 211.70 m ice core, during which some 328 ash layers wore cutters rapidly. Dates some of the ash layers using known eruptions in area. Discusses crystal size and orientation fabrics in core and makes inferences about stress field at depth. Deduces from borehole thermometry that ice here is frozen to the bed and estimates volcanic heat flux at base to be one to two orders of magnitude lower than predicted. Concludes that borehole temperatures are non-stationary. Proposes two depth-age relationships for drill site, based on different bottom melting regimes.
Notes:

Journal of Glaciology. Vol. 47(158) :423-432 (2001).

Keywords: 551.32 -- Glaciology.
551.324 -- Land ice.
551.324.05 -- Land ice, effects of exogenous phenomena.
551.322 -- Ice and snow.
548.2 -- Ice, granular structure. Anisotropy.
551.324.41 -- Land ice, thermal balance.
551.21 -- Volcanoes.
551.321.2 -- Snow and ice, methods of sampling, excavating, drilling, etc.
622.14 -- Core sampling, ice and snow.
E5 -- Glaciology: land ice.
(*501) -- Russia (Federation).
(*531.25) -- Kamchatskaya Oblast'.
SPRI record no.: 164659

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100 1# ‡aTarawa, Takayuki.
245 10 ‡aCharacteristics of a crater glacier at Ushkovsky volcano, Kamchatka, Russia, as revealed by the physical properties of ice cores and borehole thermometry /‡cTakayuki Tarawa, and 8 others.
260 ## ‡a[S.l.] :‡b[s.n.],‡c2001.
300 ## ‡ap. 423-432 :‡bill., diags., table.
500 ## ‡aJournal of Glaciology. Vol. 47(158) :423-432 (2001).
520 3# ‡aAims to clarify characteristics of a glacier that fills an active volcanic crater by investigating the mass balance and subsurface temperature of glacier at summit of Ushkovsky volcano. Reports drilling of 211.70 m ice core, during which some 328 ash layers wore cutters rapidly. Dates some of the ash layers using known eruptions in area. Discusses crystal size and orientation fabrics in core and makes inferences about stress field at depth. Deduces from borehole thermometry that ice here is frozen to the bed and estimates volcanic heat flux at base to be one to two orders of magnitude lower than predicted. Concludes that borehole temperatures are non-stationary. Proposes two depth-age relationships for drill site, based on different bottom melting regimes.
650 07 ‡a551.32 -- Glaciology.‡2udc
650 07 ‡a551.324 -- Land ice.‡2udc
650 07 ‡a551.324.05 -- Land ice, effects of exogenous phenomena.‡2udc
650 07 ‡a551.322 -- Ice and snow.‡2udc
650 07 ‡a548.2 -- Ice, granular structure. Anisotropy.‡2udc
650 07 ‡a551.324.41 -- Land ice, thermal balance.‡2udc
650 07 ‡a551.21 -- Volcanoes.‡2udc
650 07 ‡a551.321.2 -- Snow and ice, methods of sampling, excavating, drilling, etc.‡2udc
650 07 ‡a622.14 -- Core sampling, ice and snow.‡2udc
650 07 ‡aE5 -- Glaciology: land ice.‡2local
651 #7 ‡a(*501) -- Russia (Federation).‡2udc
651 #7 ‡a(*531.25) -- Kamchatskaya Oblast'.‡2udc
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