Physical Modeling of First-Year Ice Ridges - Part I: Production, Consolidation and Physical Properties
Six ice ridges were made in the large ice tank at the Hamburg Ship Model Basin (HSVA) in Hamburg to investigate thermal and mechanical properties of laboratory ridges. Particularly the effect of the initial temperature profile in- and the thickness of the level ice from which the ridges were produced was investigated. The ridges were consolidated for a period equal to about 10 mm level ice growth, and the temperatures in the ridges were logged automatically. Temperature profiles of level ice were measured manually. Ice samples were taken, ice fabrics were made and salinity and density were measured. The surface temperature of the level ice (5 mm below the surface) varied from –3.5°C to –2.0°C prior to ridge production, and this caused the thickness of the consolidated layer (as given by temperatures) to vary from 66-88 mm in the warm ridge to 103-138 mm in the cold ridge. A simple experiment to investigate the effect of the thickness was also done; three plates of different thickness (24.5, 48.5 and 96.0 mm) with initial temperatures of -32°C were put in the tank, insulated on the upper surface and the thickness development was measured. The thin plate increased its thickness by 60 %, the medium plate by 41 % and the thick plate by 26 %. The ice plates have the same initial specific energy level. This implies that the ratio between energy taken from outside the system and energy taken from ice forming on the sub-surface is much lower for the thin ice plate.
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Availability:
- Find a library where document is available. Order URL: http://worldcat.org/issn/03766756
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Supplemental Notes:
- Abstract reprinted with permission of the International Conference on Port and Ocean Engineering under Arctic Conditions (POAC).
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Authors:
- Høyland, K V
- Jenson, A
- Liferov, P
- Heinonen, J
- Evers, K-U
- Løset, S
- Määttänen, M
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Conference:
- 16th International Conference on Port and Ocean Engineering under Arctic Conditions (POAC'01)
- Location: Ottawa , Canada
- Date: 2001-8-12 to 2001-8-17
- Publication Date: 2001
Language
- English
Media Info
- Media Type: Digital/other
- Features: Figures; References; Tables;
- Pagination: 10p
- Monograph Title: POAC '01: Proceedings of the 16th International Conference on Port and Ocean Engineering under Arctic Conditions
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Serial:
- Proceedings of the International Conference on Port and Ocean Engineering Under Arctic Conditions
- Publisher: Port and Ocean Engineering under Arctic Conditions (POAC)
- ISSN: 0376-6756
- EISSN: 2077-7841
- Serial URL: http://www.poac.com/PapersOnline.html
Subject/Index Terms
- TRT Terms: Density; Ice formations; Mechanical properties; Salinity; Sea ice; Thermal properties
- Geographic Terms: Hamburg (Germany)
- Subject Areas: Environment; Marine Transportation; I15: Environment;
Filing Info
- Accession Number: 01588099
- Record Type: Publication
- Files: TRIS
- Created Date: Jan 27 2016 5:13PM