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Thermohaline structure inhomogeneity associated with polynia at the northern margin of Emery Ice-shelf

【标题】Thermohaline structure inhomogeneity associated with polynia at the northern margin of Emery Ice-shelf

【Title】Thermohaline structure inhomogeneity associated with polynia at the northern margin of Emery Ice-shelf

【作者】 蒲书箴; 葛人峰; 董兆乾; 于卫东; 史久新; 项宝强

【Author】 Pu Shuzhen ; Ge Renfeng ; Dong Zhaoqian ; Yu Weidong ; Shi Jiuxin ; Xiang Baoqiang

【期刊】极地研究

【Journal】

【期刊年份】2007

【卷】18

【期】1

【关键词】 Emery Ice-Shelf; thermohaline structure; floe; inhomogeneity; polynia

【Keywords】 Emery Ice-Shelf; thermohaline structure; floe; inhomogeneity; polynia

【摘要】Based on the hydrographic data in austral summer during the 22nd Antarctic Expedition of China (2005/2006), some features can be found about the northern margin of Emery ice shelf as follows. The heat content in the surface layer (0-50 m) at the eastern end and the western end of the ice-shelf margin is much higher than that at the middle. The upper mixing-layer depth and the seasonal thermocline depth at the middle of the ice-shelf northern margin are much shallower than those at the both ends. However there is much less difference between the middle and the ends in the bottom layer. The remote sensing photos show that the inhomogeneity in the surface-layer water is closely related to the spatial distribution of the floes and polynia in the area.

【Abstract】Based on the hydrographic data in austral summer during the 22nd Antarctic Expedition of China (2005/2006), some features can be found about the northern margin of Emery ice shelf as follows. The heat content in the surface layer (0-50 m) at the eastern end and the western end of the ice-shelf margin is much higher than that at the middle. The upper mixing-layer depth and the seasonal thermocline depth at the middle of the ice-shelf northern margin are much shallower than those at the both ends. However there is much less difference between the middle and the ends in the bottom layer. The remote sensing photos show that the inhomogeneity in the surface-layer water is closely related to the spatial distribution of the floes and polynia in the area.

【基金/项目】

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