Author(s): P. Liferov; P. O. Moslet; R. Nilsen; K. Hoyland; S. Loset
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Abstract: A second part of the in-situ program was carried out in the Van Mijen fjord at Spitsbergen during the year 2003 to investigate the ice ridge scour process. One ice scour test and one shear off test were performed. Ice ridges with dimensions of up to 3.9 × 3.9 × 2.65 m were artificially made by cutting the level ice into pieces to produce ice rubble. The ridges were left to consolidate for up to 4 weeks and then pulled towards the beach scouring the seabed that consisted of clayey sediments (ice scour tests). The ice ridge for the shear off test was built up in the pre-excavated trench in hard moraine. During pulling the keel of the ice ridge was sheared off by the sidewall of the trench. The pulling force, displacements, failure of the keel and resulting plough marks were measured. This paper provides a description of the test arrangement and the basic experimental results.
Year: 2004