Water-ice heat exchange and ice-water boundary layer in freshwater lakes

淡水湖中的水-冰热交换和冰-水边界层

• 批准号: 280874368
• 负责人: Professor Dr. Georgiy Kirillin
• 金额: --
• 依托单位: Leibniz-Institut für Gewässerökologie und Binnenfischerei (IGB)
• 依托单位国家: 德国
• 项目类别: Research Grants
• 财政年份: 2015
• 资助国家: 德国
• 起止时间: 2014-12-31 至 2018-12-31
• 项目状态: 已结题
• 来源: https://gepris.dfg.de/gepris/projekt/280874368?language=en
• 关键词: Water; ice; heat; exchange; water

The ongoing project is focused on quantification of physical processes, which determine formation and melting of seasonal ice cover. The project is a German-Russian collaborative effort, which combines research on European Arctic lakes and on Lake Baikal. At the initial stage of the project, analysis of results from massive field campaigns revealed the crucial role played by under-ice water motions---geostrophic currents and short-term seiche oscillations---in acceleration of melting at the ice base. These results led to formulation of a unifying hypothesis on scaling the water-ice heat flux with the dissipation rate of the kinetic energy of turbulence. In order to test the hypothesis, a long-term field experiment is proposed based on installation of two identical custom monitoring stations simultaneously in Lake Baikal and in arctic Lake Kilpisjärvi for the entire winter period in both lakes. Performing of such an experiment and analysis of its results requires a 12-month extension of the project. The outcomes of the experiment will provide detailed information on the ice boundary layer dynamics under different mechanisms of turbulence generation. If proven valid, the proposed scaling will allow quantifying the ice-water heat exchange in a wide range of conditions, and can be directly applied for modeling the ice-water boundary layer in polar oceanography and limnology of ice-covered lakes.

正在进行的项目侧重于确定季节性冰盖形成和融化的物理过程的量化。该项目是德国和俄罗斯的合作项目，结合了对欧洲北极湖泊和贝加尔湖的研究。在项目的初始阶段，对大规模现场活动结果的分析揭示了冰下水运动（地转流和短期地震振荡）在加速冰基融化方面发挥的关键作用。这些结果形成了用湍流动能耗散率来标度水冰热通量的统一假设。为了验证这一假设，提出了在整个冬季同时在贝加尔湖和北极湖Kilpisjärvi安装两个相同的定制监测站的长期野外试验。进行这样的实验并分析其结果需要将项目延长12个月。实验结果将提供不同湍流产生机制下冰边界层动力学的详细信息。如果被证明是有效的，所提出的标度将允许在广泛的条件下量化冰水热交换，并且可以直接应用于极地海洋学和冰雪覆盖湖泊的冰水边界层建模。

项目成果

Turbulence in the stratified boundary layer under ice: observations from Lake Baikal and a new similarity model

• DOI: 10.5194/hess-2019-608
• 发表时间: 2019-12
• 期刊: Hydrology and Earth System Sciences
• 影响因子: 6.3
• 作者: G. Kirillin;I. Aslamov;V. Kozlov;R. Zdorovennov;N. Granin

Numerical study on the response of the largest lake in China to climate change

中国最大湖泊对气候变化响应的数值研究

• DOI: 10.5194/hess-23-2093-2019
• 发表时间: 2018-12
• 期刊: Hydrology and Earth System Sciences
• 影响因子: 6.3
• 作者: Su Dongsheng;Hu Xiuqing;Lijuan Wen;Shihua Lyu;Xiaoqing Gao;Lin Zhao;Zhaoguo Li1;Juan Du;Georgiy Kirillin
• 通讯作者: Georgiy Kirillin

A Study of Heat Transport at the Ice Base and Structure of the Under-Ice Water Layer in Southern Baikal

• DOI: 10.1134/s0097807817030034
• 发表时间: 2017-05-01
• 期刊: WATER RESOURCES
• 影响因子: 1
• 作者: Aslamov, I. A.;Kozlov, V. V.;Granin, N. G.
• 通讯作者: Granin, N. G.

Methane hydrate emergence from Lake Baikal: direct observations, modelling, and hydrate footprints in seasonal ice cover

贝加尔湖的甲烷水合物的出现：季节性冰盖中的直接观测、建模和水合物足迹

• DOI: 10.1038/s41598-019-55758-8
• 发表时间: 2019
• 期刊: Scientific Reports
• 影响因子: 4.6
• 作者: N. Granin ;I. Aslamov;V. Kozlov;M. Makarov;G. Kirillin;K. Kucher;V. Blinov;V. Ivanov;I. Mizandrontsev;A. Zhdanov;A. Anikin;M. Granin;R. Gnatovsky
• 通讯作者: R. Gnatovsky

Lake‐Atmosphere Heat Flux Dynamics of a Thermokarst Lake in Arctic Siberia

• DOI: 10.1029/2017jd027751
• 发表时间: 2018-05
• 期刊: Journal of Geophysical Research: Atmospheres
• 作者: D. Franz;I. Mammarella;J. Boike;G. Kirillin;T. Vesala;Niko Bornemann;E. Larmanou;M. Langer;T. S