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Record #112080:
- #112080
Main publication details
MARC recordEffect of deformation on permeability / Garry K.C. Clarke, Tavi Murray.
| Title: | Effect of deformation on permeability / Garry K.C. Clarke, Tavi Murray. |
| Author(s): | Clarke, Garry K. C. Murray, Tavi. |
| Date: | 1991. |
| In: | Eos : transactions, American Geophysical Union. (1991.), Vol. 72(44, supplement) (1991) |
| Abstract: | AGU Fall Meeting Program and Abstracts, December 9-13, 1991. Laboratory experiments suggest that deformation can result in 100-fold increase in permeability, and could have implications for glacier mechanics. Simple solution to analyze is that of layer of subglacial till overlying layer of permeable bedrock. If high pore-water pressure exists at ice-till contact, then water pressure will decrease with depth, reaching minimum at till-bedrock contact. If water pressure in uppermost till is high enough to induce sediment deformation, then associated increase in till permeability will cause zone of high water pressure to become thicker until most of till is pressurized and deforming. |
| Notes: | Eos : transactions, American Geophysical Union. Vol. 72(44, supplement) :158 (1991). |
| Keywords: | 551.32 -- Glaciology. 551.324 -- Land ice. 551.324.22 -- Glaciers. 539.3 -- Ice, mechanical properties. 551.332.212 -- Till or boulder clay. E5 -- Glaciology: land ice. |
| SPRI record no.: | 112080 |
LDR 01578naa#a2200000#a#4500 001 SPRI-112080 005 20230324003809.0 007 ta 008 230324s1991####xx####|##|###|0||#0|eng#d 035 ## ‡aSPRI-112080 040 ## ‡aUkCU-P‡beng‡eaacr 100 1# ‡aClarke, Garry K. C. 245 10 ‡aEffect of deformation on permeability /‡cGarry K.C. Clarke, Tavi Murray. 260 ## ‡a[S.l.] :‡b[s.n.],‡c1991. 300 ## ‡ap. 158. 500 ## ‡aEos : transactions, American Geophysical Union. Vol. 72(44, supplement) :158 (1991). 520 3# ‡aAGU Fall Meeting Program and Abstracts, December 9-13, 1991. Laboratory experiments suggest that deformation can result in 100-fold increase in permeability, and could have implications for glacier mechanics. Simple solution to analyze is that of layer of subglacial till overlying layer of permeable bedrock. If high pore-water pressure exists at ice-till contact, then water pressure will decrease with depth, reaching minimum at till-bedrock contact. If water pressure in uppermost till is high enough to induce sediment deformation, then associated increase in till permeability will cause zone of high water pressure to become thicker until most of till is pressurized and deforming. 650 07 ‡a551.32 -- Glaciology.‡2udc 650 07 ‡a551.324 -- Land ice.‡2udc 650 07 ‡a551.324.22 -- Glaciers.‡2udc 650 07 ‡a539.3 -- Ice, mechanical properties.‡2udc 650 07 ‡a551.332.212 -- Till or boulder clay.‡2udc 650 07 ‡aE5 -- Glaciology: land ice.‡2local 700 1# ‡aMurray, Tavi. 773 0# ‡7nnas ‡tEos : transactions, American Geophysical Union. ‡gVol. 72(44, supplement) (1991) ‡wSPRI-1028 917 ## ‡aUnenhanced record from Muscat, imported 2019 948 3# ‡a20230324