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首页> 外文会议>International conference on port and ocean engineering under arctic conditions >HYPERSALINE PERMAFROST UNDER A LAGOON OF THE ARCTIC OCEAN
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HYPERSALINE PERMAFROST UNDER A LAGOON OF THE ARCTIC OCEAN

机译：在北冰洋的泻湖下的Hypersaline Modafrost

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A series of borings was drilled and sampled in the winter on a transect across a 1 to 2 m deep lagoon on the Alaskan Coast of the Arctic Ocean. Subsurface temperatures were measured, and all of the temperatures were below freezing, with soils under the lagoon colder than those under the deeper offshore water. Pore water salinities were measured and show a hypersaline condition of 2 to 4 times the salinity found in seawater. Much of the lagoon freezes to its full depth by the end of the winter. In the shallower waters, the seasonal freezing penetrates into the underlying soil. Salt exclusion from the bottom of the ice cover continues down into the soil with the deepening freezing front. However, when the materials thaw each summer the process is not reversed by the slower diffusion process, so the pore water salinity increases year by year. The hypersalinity results in the chemical degradation of the interstitial ice. Visual ice and ice bonding were not observed where hypersalinity depresses the freezing point below the ground temperature.
机译：在冬季钻探一系列钻孔，并在北冰洋阿拉斯加海岸的1至2米深泻湖上横跨横跨横跨泻湖。测量了地下温度，并且所有温度低于冻结，泻湖下的土壤比较深的海上水下的土壤。测量孔隙水资源盐度，显示出海水中盐度的2至4倍的过氧化盐条件。在冬天结束时，大部分的泻湖冻结了它的全部深度。在较浅的水域中，季节性冷冻渗透到底层土壤中。冰盖底部的盐排除在冰盖中继续到土壤中，加深冻结前线。然而，当每次夏天进行材料解冻时，该过程的扩散过程较慢的过程不逆转，因此孔水盐度逐年增加。高度高度导致间质冰的化学降解。未观察到视觉冰和冰键，其中高度高度低于地温度下降的冰点。

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