Modeling the Evaporation Line of Lake Water Isotopes in Golmud Drainage Basin, P.R. China

Abstract:

The δD-δ¹⁸O line features are very important properties of isotopic characteristics. The δD-δ18O line usually is estimated by regression analysis when samples are sufficient. In this^{Superscript text} paper, the isotopic characteristic of rain water, shallow groundwater and lake water in Golmud drainage area of Qaidam Basin were analyzed, and the isotopic evaporation line of lake water was calculated with Rayleigh fractionation function because the regression analysis method is insufficient in the condition that measured samples of lake water are short. The result shows that the groundwater is the main source of lakes; and the isotopic fractionation of hydrogen and oxygen in lake water controlled by kinetic effect in the process of evaporation. The calculated evaporation line of lake water is δD=3.26δ¹⁸O-21.00, which is matched with measured samples. The sensitivity analysis of the slop to the temperature, dissolved salt composition in lake water and relative humidity of air shows that the slop is negative related to the temperature and dissolved composition and is positive related to relative humidity. In typical environmental condition, the slop is increased by 0.0303, 0.1016 and 0.0205, respectively, when temperature decreased 1°C, dissolved NaCl decreased 1mol/L and relative humidity increased by 1%.

• Periodical: Advanced Materials Research (Volumes 518-523)
• Pages: 4186-4193
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.518-523.4186
• Online since: May 2012
• Authors: Hong Yun Ma, Li He Yin, Li Guo, Jun Zhang
• Keywords: Equilibrium Fractionation, Evaporation Line, Hydrogen and Oxygen Stable Isotopes, Kinetic Fractionation

References

[1] Gat, J.R., Bowser, C.J., Kendall, C., 1994, Geophysical Research Letters 21 (7), 557–560

[2] Lihe Yin, Guangcai Hou, Xiaosi Su, Dong Wang, Jiaqiu Dong, Yonghong Hao and Xiaoyong Wang, 2010, Journal of Hydrology

DOI: 10.1007/s10040-010-0671-4

[3] Craig, H., Gordon, L.I., 1965. Lischi and Figli, Pisa, Italy, p.9–130

[4] L.I. Wassenaar, S.L. Van Wilgenburg, K. Larson , K.A. Hobson, Journal of Geochemical Exploration, 2009,102:123–136

DOI: 10.1016/j.gexplo.2009.01.001

[5] Cappa C. D., Hendricks M. B., DePaolo D. J. and Cohen C., 2003, J. Geophys. Res. 108, 4525.

DOI: 10.1029/2003JD003597

[6] Majoube M., 1971, Chim. Phys. 68, 1423-1436.

[7] LI Jian, WANG Hui, WEI Li-qiong, 2007, North western geology, 40(4):94-100

[8] S.A. Morse, 2006, Chemical Geology, 226: 212– 231

[9] Juske Horita and David J. Wesolowski, 1993, Geochimica et Cosmochimica Acta, 58( 16):3425-3437

[10] Juske Horita, David J. Wesolowski, David R. Cole, 1994, Geochrmica et Cosmochimica Acta, 57:2797-2817

[11] Kirill I. Shmulovich, Dirk Landwehr, Klaus Simon and Wilhelm Heinrich, 1999, Chemical Geology, 157：343–354；

[12] Stewart M.K. and Friedman I. 1975, Geophvs. Re.y.80,3812-3818.

[13] T. Driesner and T.M. Seward, Chemical Geology, 1999, 153:281–287；

[14] Juske Horita, David R. Cole, and David J. Wesolowski, 1993b, Geochimica et Cosmochimica Acta, 57:4703-4711

[15] Gibson, J.J., 2002, Journal of Hydrology, 264 (1–4), 242–261

[16] Boaz Luz, Eugeni Barkan, Ruth Yam, Aldo Shemesh, Geochimica et Cosmochimica Acta, 2009, 73:6697-6703

DOI: 10.1016/j.gca.2009.08.008

[17] Merlivat L., 1978, Chem. Phys., 69:2864-2871

[18] Hongbing Tan, Xinqi Liu, Shengsong Yu, Yaping Lu, 2001, Journal of Lake Sciences, 12(1):43-50