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IN-SITU UNIAXIAL COMPRESSION TESTS OF LEVEL ICE PART I: ICE STRENGTH VARIABILITY VERSUS LENGTH SCALE

机译:初级冰原位单轴压缩测试:第一部分:冰强度变异与长度尺度

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摘要

Field programs of the ice strength determination through the uniaxial compression tests were carried out on the landfast level ice both in the Van Mijenfjorden and in the Adventfjorden on Svalbard, Norway in 2004 and 2005. The ice strength was examined in relation to the different length scales. The step (horizontal distance) between the ice samples was continuously reduced in order to find out how the ice strength variability develops. The spatial variation of the physical properties of the ice such as temperature, salinity, density has been measured. The typical ice strength variability for the areas larger than 40 m~2 is found about 20 - 30 % for the vertical ice cores of the certain depth from the ice cover surface. For the horizontal ones it is slightly less about 10 - 20 %.
机译:通过单轴压缩试验确定冰强度的野外计划分别于2004年和2005年在Van Mijenfjorden和挪威斯瓦尔巴特群岛的Adventfjorden上的陆地水平冰上进行。检查了不同长度尺度下的冰强度。 。为了找出冰强度变异性是如何发展的,冰样之间的台阶(水平距离)不断减小。已经测量了冰的物理性质的空间变化,例如温度,盐度,密度。对于距冰盖表面一定深度的垂直冰芯,发现大于40 m〜2的区域的典型冰强度变异性约为20-30%。对于水平的,大约少10-20%。

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