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Record #112514:
- #112514
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MARC recordEvidence for pressure melting and heat generation by viscous flow of liquid in indentation and impact experiments on ice / Robert E. Gagnon, John Mølgaard.
| Title: | Evidence for pressure melting and heat generation by viscous flow of liquid in indentation and impact experiments on ice / Robert E. Gagnon, John Mølgaard. |
| Author(s): | Gagnon, Robert E. Mølgaard, John. |
| Date: | 1991. |
| In: | Annals of Glaciology. (1991.), Vol. 15 (1991) |
| Abstract: | Experiments at -9°C using apparatus which permitted visual observation of contact zone at ice/indenter interface by viewing through specimens. Analysis of video records and test data indicated that at least 50% of energy dissipated during indentation was consumed by pressure melting and heat generation through rapid viscous flow of liquid. Thickness of liquid layer estimated at 16 mum and contact pressure in melting zone was at least 90 MPa. Vudeo records of small-scale impact tests on ice indicated that same process of pressure melting and extrusion was taking place. |
| Notes: | Annals of Glaciology. Vol. 15 :254-260 (1991). |
| Keywords: | 551.32 -- Glaciology. 551.322 -- Ice and snow. 539.6 -- Ice, adhesion and friction. Regelation. 624.145.1 -- Floating ice, thrust. E4 -- Glaciology: physics and chemistry of ice. |
| SPRI record no.: | 112514 |
LDR 01487naa#a2200000#a#4500 001 SPRI-112514 005 20230327220319.0 007 ta 008 230327s1991####xx#a##|##|###|0||#0|eng#d 035 ## ‡aSPRI-112514 040 ## ‡aUkCU-P‡beng‡eaacr 100 1# ‡aGagnon, Robert E. 245 10 ‡aEvidence for pressure melting and heat generation by viscous flow of liquid in indentation and impact experiments on ice /‡cRobert E. Gagnon, John Mølgaard. 260 ## ‡a[S.l.] :‡b[s.n.],‡c1991. 300 ## ‡ap. 254-260 :‡bdiags., tables. 500 ## ‡aAnnals of Glaciology. Vol. 15 :254-260 (1991). 520 3# ‡aExperiments at -9°C using apparatus which permitted visual observation of contact zone at ice/indenter interface by viewing through specimens. Analysis of video records and test data indicated that at least 50% of energy dissipated during indentation was consumed by pressure melting and heat generation through rapid viscous flow of liquid. Thickness of liquid layer estimated at 16 mum and contact pressure in melting zone was at least 90 MPa. Vudeo records of small-scale impact tests on ice indicated that same process of pressure melting and extrusion was taking place. 650 07 ‡a551.32 -- Glaciology.‡2udc 650 07 ‡a551.322 -- Ice and snow.‡2udc 650 07 ‡a539.6 -- Ice, adhesion and friction. Regelation.‡2udc 650 07 ‡a624.145.1 -- Floating ice, thrust.‡2udc 650 07 ‡aE4 -- Glaciology: physics and chemistry of ice.‡2local 700 1# ‡aMølgaard, John. 773 0# ‡7nnas ‡tAnnals of Glaciology. ‡gVol. 15 (1991) ‡wSPRI-60773 917 ## ‡aUnenhanced record from Muscat, imported 2019 948 3# ‡a20230327