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Aerial view of Bharti Island, Larsemann Hills, East Antarctica.

Aerial view of Bharti Island, Larsemann Hills, East Antarctica.

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The Larsemann Hills area represents a unique environmental setting between marine and glacial ecosystems. One of the promontories of this region, named Bharti, depicting similar set up was selected for the study of chemical parameters with special reference to its ionic characters. Water samples from 6 selected lakes of Bharti promontory, Larsemann...

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... deposition of glacial tills, moraine deposits, glacial striations and patterned ground are uncommon in Bharti promontory. The exposed land mass merges with the polar ice sheet in south-southeast and is surrounded by sea on all other sides (Fig.1). It is shielded by small islands in north and northeast. ...

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... Studies on hydrogeochemistry in the lakes of Larsemann Hills are limited. Some work describing the ionic character in the lakes of Grovnes promontory, Larsemann Hills was conducted by Shrivastava et al. (2011). However, the factors controlling the hydrogeochemistry and the role of sea spray through marine aerosols followed by rock water interaction on these lakes are not well documented. ...
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... Low organic load in lake water indicate the oligotrophic stage of lake ecosystems. In oligotrophic lakes that are low in primary productivity as a result of low nutrient content, the chemistry depends mainly on lithology, precipitation, evaporation and period of sojourn of water in the basin [24]. ...
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... The topography is also shaped by the strong polar winds resulting in the development of wind erosion features (ventifacts) in the rocks. The highest elevation in the Bharati promontory is 150 m from the mean sea level (Shrivastava et al., 2011). This rocky terrane shows felsic garnet bearing 'yellow gneiss' with small patches of cordierite bearing 'blue gneiss', typical of the Larsemann Hills region . ...
... Different generations of quartz and pegmatite veins are also seen intersecting the above lithologies. In a more recent study Shrivastava et al. (2011) have described gneisses in the northern and northwestern parts and granitoids in the southeastern part of Bharati promontory. They have further subdivided the gneisses into garnetiferous granite gneiss, garnet bearing magnetite -biotite -gneiss and quartz -magnetite -biotite gneiss. ...
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The Larsemann Hills area (69°20'-69°28'S, 76°00'–76°30'E) is an ice-free oasis on the Ingrid Christensen Coast of Princess Elizabeth Land, East Antarctica, that includes Bharti Island, Fisher Island, McLeod Island, Broknes Peninsula, Stornes Peninsula and several other islands, promontories and nunataks. The Larsemann Hills is an ice-free area of approximately 50 km2, located halfway between the Vestfold Hills and the Amery Ice Shelf on the South-Eastern coast of Prydz Bay, Princess Elizabeth Land, East Antarctica. The ice-free area consists of two major peninsulas (Stornes and Broknes), four minor peninsulas and approximately 130 near shore islands. The Larsemann Hills area contains more than 150 lakes at different islands and peninsulas. Methodology: Fisher Island of Larsemann Hills in east Antarctica was selected as a sampling site for the present study. Water sample was collected from a freshwater lake of Fisher Island during 30th Indian Scientific Expedition to Antarctica (ISEA) and analysed for the physico-chemical parameters, major elements and trace metal in surface lake water. Physico-chemical parameters were analysed using standard methodology. Results: The concentrations of metals Cu, Pb, Cd, Zn and Cr were measured using Inductively Coupled Plasma Optical Emission Spectroscopy (ICP-OES). Pesticide residues were also analysed using GC-MS and LC-MS. Radiation contamination was detected with the help of an automatic and handy radiation detector. Pesticide residues and radiation contamination was found below detection level of instruments in lake water sample. Conclusion: After evaluating general physico-chemical parameters, heavy metals and organic compounds in lake water, it has been observed that the lake water of lake has no pollution load and no impact of any anthropogenic activity.
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