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Seasonal Variability of Thermal Regime in a Shallow Ice Covered Lake

机译：浅冰覆盖湖泊中热力状况的季节性变化

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摘要

A systematic study was conducted over six years (1994-1999) on a shallow ice covered lake in the Russian Republic of Karelia with the aim of developing better understanding of some physical processes occurring in shallow ice-covered lakes. The average ice-covered period was 182 days while the longest ice-covered period was 193 days. The average lake water temperature at ice formation was 0.5-1.0℃, while the average water temperature just before ice break-up was close to 4℃. The heat flux from water to ice was low during early winter but could increase above 5 Wm-2 (daily average) during the last month before ice break-up. The heat flux from sediment to water was the main source of heat to the water body during early to mid winter being about 2-6 W-m-2 during early winter but decreasing to about 1-2 Wm-2 during early spring.
机译：对俄罗斯卡累利阿共和国一个浅冰覆盖的湖泊进行了为期六年（1994-1999年）的系统研究，目的是更好地了解浅冰覆盖的湖泊中发生的某些物理过程。平均覆冰时间为182天，最长的覆冰时间为193天。冰层形成时的平均湖水温度为0.5-1.0℃，而冰破裂前的平均水温接近4℃。从水到冰的热通量在冬季初很低，但在冰破裂前的最后一个月可能会增加到5 Wm-2（日平均）以上。从沉积物到水的热通量是冬季初冬至中期水体的主要热源，初冬时约为2-6 W-m-2，而初春时则降至约1-2 Wm-2。

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  • 来源
    《Nordic hydrology》 |2003年第2期|p.107-124|共18页
  • 作者

    Osama A. Maher; Joakim Malm;

  • 作者单位

    Department of Water Resources Eng., Lund Institute of Technology, Lund University, Box 118, S-221 00 Lund, Sweden;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 水文科学（水界物理学）;
  • 关键词

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