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THREE YEARS OF MEASUREMENTS OF FIRST YEAR RIDGES IN THE BARENTS SEA AND FRAM STRAIT

机译:巴伦海峡和海峡海峡三年以来的首次测量

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During three expeditions in March 2011, March 2012 and April/May 2013 with the Norwegian coastguard vessel "KV Svalbard", two pressure ridges around Svalbard, one ridge in Fram Strait and three ridges in Olga strait have been studied with respect to ridge geometry and physical and mechanical properties. With a discrete measurement, which is of most interest here, information can be obtained on the overall size and shape of an individual ridge at one particular location, both above and below the waterline. This approach provides detailed quantitative information on both the sail and keel size and shape, of a specific ridge, as well as its porosity. It does not supply any information on ridge spacing. The results of individual profile measurements are discussed. Measurements of vertical profiles along the spine and transects perpendicular to the spine are presented for these ridges. The sail height, sail width, keel depth and keel width, consolidated layer thickness, rubble block sizes and porosities are examined for each ridge. The results presented in this paper contribute to more data in terms of geometry and morphology of the first-year ridge off Svalbard, in Fram Strait and Barents Sea. Compression and tensile strength properties are important input data for constitutive modelling. Still strength properties of ridged ice are not yet sufficiently investigated. Uniaxial compressive tests were performed with horizontal and vertical loading directions and the results from the testing of level ice and consolidated layer are summarized with consideration of total porosity.
机译:在2011年3月,2012年3月和2013年4月/ 2013年5月的挪威海岸巡逻舰“ KV Svalbard”进行的三次考察中,研究了关于脊的几何形状和物理和机械性能。通过离散测量(在此最受关注),可以获得有关在水线以上和以下的一个特定位置处单个山脊的整体大小和形状的信息。这种方法提供了有关特定脊的帆和龙骨尺寸和形状以及其孔隙率的详细定量信息。它不提供有关脊间距的任何信息。讨论了单个轮廓测量的结果。对于这些山脊,显示了沿着脊柱和垂直于脊柱的横断面的垂直剖面的测量结果。检查每个脊的帆高度,帆宽度,龙骨深度和龙骨宽度,固结层厚度,碎石块尺寸和孔隙率。本文提供的结果有助于就弗拉姆海峡和巴伦支海的斯瓦尔巴特群岛第一年山脊的几何学和形态学提供更多数据。抗压强度和抗拉强度特性是本构模型的重要输入数据。脊冰的静态强度特性尚未得到充分研究。在水平和垂直荷载方向上进行了单轴压缩试验,并考虑了总孔隙度,总结了水平冰和固结层的试验结果。

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