DBPapers
DOI: 10.5593/sgem2011/s02.123

HYDROCHEMICAL AND ISOTOPIC CHARACTERISTICS OF WETLANDS IN THE CIHANBEYLI (KONYA) BASIN, CENTRAL ANATOLIA, TURKEY

AUTHOR/S: A. BOZDAG, G. GOCMEZ
Monday 1 August 2011 by Libadmin2011

11th International Multidisciplinary Scientific GeoConference SGEM2011, www.sgem.org, SGEM2011 Conference Proceedings/ ISSN 1314-2704, June 20-25, 2011, Vol. 1, 497-504 pp

ABSTRACT

Cihanbeyli basin is located in the northern part of Konya in the Central Anatolia,
Turkey. This wetland is characterized with four lakes (Salt Lake, Bolluk Lake, Tersakan
Lake and Gök Lake). The Salt Lake, Tersakan Lake and Bolluk Lake are so important
because of its contribution to country economy and enabling ecosystem services for
endangered bird species. In recent years, The Salt, Tersakan and Bolluk Lakes are in
danger of completely drying. The main reasons of drying of the lakes are global
warming, the lack of precipitation, shallowness of the lakes, excessive evaporation and
inadequate recharge sources.
The Salt Lake, Tersakan Lake and Bolluk Lake have Na-Cl water type and EC values
can be reached 592.670μS/cm in rainy season. Research findings point out a thundering
rise at SO4 concentration in addition to Cl ion in the Bolluk and Tersakan Lakes. The
Gök Lake has Na-HCO3 water type in rainy season, while it has Na-Cl water type in dry season. EC values of the Gök Lake range from 1058 to 1573 μS/cm in both seasons. All of the lakes are alkaline type with 8.15 and 9.46 pH values.
Al, As, P and B values in the Salt Lake; As, Se, P and B values in the Tersakan Lake; Se, P, Pb and B values in the Bolluk Lake; As and B values in the Gök Lake are clearly exceed the aqualitic life standards. The reasons of high values of this ions in the lakes
are probably due to discharging of sewage, domestic and medical wastes without purification from Konya, Cihanbeyli and the surrounding settlements to the Salt Lake,
Bolluk Lake and Tersakan Lake.
The δ 18O and δ2H values of the lakes are range between -6.14 0/00 and 1.44 o/oo, -48.59 o/oo and -7.53 o/oo, respectively. All of the waters have meteoric origin. The samples collected from all of the lake waters show an evaporation effect. In comparison to the
other lake waters, isotopic value of the Gök Lake water is poor than the other lake waters. This position shows a mixing of regional groundwater and the lake water.

Keywords: Cihanbeyli Basin, wetland, δ 18O, δ2H, evaporation, Central Anatolia.

PAPER 2011/s02.123: HYDROCHEMICAL AND ISOTOPIC CHARACTERISTICS OF WETLANDS IN THE CIHANBEYLI (KONYA) BASIN, CENTRAL ANATOLIA, TURKEY

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