The structure of internal stresses in the uncompacted ice cover
- Arctic and Antarctic Research Inst., St. Petersburg (Russian Federation)
Interactions between engineering structures and sea ice cover are associated with an inhomogeneous space/time field of internal stresses. Field measurements (e.g., Coon, 1989; Tucker, 1992) have revealed considerable local stresses depending on the regional stress field and ice structure. These stresses appear in different time and space scales and depend on rheologic properties of the ice. To estimate properly the stressed state a knowledge of a connection between internal stress components in various regions of the ice cover is necessary. To develop reliable algorithms for estimates of ice action on engineering structures new experimental data are required to take into account both microscale (comparable with local ice inhomogeneities) and small-scale (kilometers) inhomogeneities of the ice cover. Studies of compacted ice (concentration N is nearly 1) are mostly important. This paper deals with the small-scale spatial distribution of internal stresses in the interaction zone between the ice covers of various concentrations and icebergs. The experimental conditions model a situation of the interaction between a wide structure and the ice cover. Field data on a drifting ice were collected during the Russian-US experiment in Antarctica WEDDELL-I in 1992.
- OSTI ID:
- 237955
- Report Number(s):
- CONF-950604-; ISBN 1-880653-18-4; TRN: IM9625%%280
- Resource Relation:
- Conference: 5. international conference on offshore and polar engineering, The Hague (Netherlands), 11-15 Jun 1995; Other Information: PBD: 1995; Related Information: Is Part Of Proceedings of the fifth (1995) international offshore and polar engineering conference. Volume 2; Chung, J.S. [ed.] [Colorado School of Mines, Golden, CO (United States)]; Sayed, M. [ed.] [National Research Council Canada, Ottawa, Ontario (Canada)]; Gresnigt, A.M. [ed.] [Delft Univ. of Technology (Netherlands)]; PB: 580 p.
- Country of Publication:
- United States
- Language:
- English
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