Upward flushing of sea water through first year ice
Upward flushing of sea water through first year ice
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海水向上冲刷第一年冰
DOI：
10.1080/07055900.1995.9649545
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发表时间：
1995
期刊：
影响因子：
1.2
通讯作者：
K. Shirasawa
中科院分区：
文献类型：
--
作者：
E. Hudier;R. Ingram;K. Shirasawa
摘要对冰和雪泥层的观测表明，在暴风雪之后，海水侵入了雪层。在雪冰界面以下1厘米处记录的冰温值表明，海水向上流动的持续时间很短。随后是一段强烈的盐水排泄期，其特征是咸盐水层的迁移，盐度高达42 psu。这些结果表明，一场暴风雪会导致盐水通道网络的完全（向上）冲洗和冰雪特征的重大修改。融化速率和向下的盐水通量是使用放置在冰水界面上的40 cm深的盒子中测量的盐度计算的，该盒子将50 × 50 cm的海冰区域与海洋混合过程隔离开来。在这个半隔离的环境中，观测到的盐度变化使我们能够确定融水通量和盐水排水或冲洗，即使冰厚度测量没有显示任何显着变化。熔融速率高达21厘米/月，相当于...
Abstract Observations in both the ice and slush layers suggest that sea water intrudes into the snow layer following a snow storm. Ice temperature values recorded at 1 cm below the snow‐ice interface show that the upward flux of sea water is of short duration. This is followed by a period of intense brine drainage characterized by the migration of a salty brine layer, with salinities up to 42 psu. These results suggest that a snow storm induces a complete (upward) flushing of the brine channel network and major modifications of snow and ice characteristics. Melt rates and downward brine fluxes were calculated using salinity measured in a 40 cm deep box placed on the ice‐water interface, which isolated a 50 × 50 cm area of sea ice from ocean mixing processes. In this semi‐isolated environment, observed salinity changes allowed us to determine melt water fluxes and brine drainage or flushing even though ice thickness measurements did not show any significant change. Melt rates up to 21 cm/month and equivale...