Marine hydrographic spatial-variability and its cause at the northern margin of the Amery Ice Shelf

Renfeng, Ge and Zhaoqian, Dong and Hongxia, Chen and Na, Liu and Jiuxing, Shi and Shuzhen, Pu (2011) Marine hydrographic spatial-variability and its cause at the northern margin of the Amery Ice Shelf. Advances in Polar Science, 22 (2). pp. 74-80.

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Abstract

Conductivity, temperature and depth(CTD) data collected along a zonal hydrographic section from the northern margin of the Amery Ice Shelf on 25–27 February 2008 by the 24th Chinese National Antarctic Research Expedition (CHINARE) cruise in the 2007/2008 austral summer are analyzed to study thermohaline structures. Analysis reveals warm subsurface water in a limited area around the east end of the northern margin, where the temperature, salinity and density have east-west gradients in the surface layer of the hydrographic section. The localization of the warm subsurface water and the causes of the CTD gradients in the surface layer are discussed. In addition, the results from these CTD data analyses are compared with those from the 22nd CHINARE cruise in the 2005/2006 austral summer. This comparison revealed that the thermoclines and haloclines had deepened and their strengths weakened in the 2007/2008 austral summer. The difference between the two data sets and the cause for it can be reasonably explained and attributed to the change in ocean-ice-atmosphere interactions at the northern margin of the Amery Ice Shelf.

Item Type:	Article
Related URLs:
Keywords:	Amery Ice Shelf, marine hydrography, spatial variability causes
Subjects:	Natural Environment > Terrestrial
Organizations:	Unspecified
Date Deposited:	18 Sep 2023 13:51
URI:	http://library.arcticportal.org/id/eprint/2415

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