ISOTOPIC INVESTIGATION OF GROUNDWATER RECHARGE MECHANISM IN THAL DOAB

Authors

  • W. Akram Isotope Application Division, Directorate of Technology, PINSTECH, P.O. Nilore, Islamabad, Pakistan
  • Z. Latif Isotope Application Division, Directorate of Technology, PINSTECH, P.O. Nilore, Islamabad, Pakistan
  • N. Iqbal Isotope Application Division, Directorate of Technology, PINSTECH, P.O. Nilore, Islamabad, Pakistan
  • M. A. Tasneem Isotope Application Division, Directorate of Technology, PINSTECH, P.O. Nilore, Islamabad, Pakistan

Abstract

Isotope techniques were applied in a selected area of Punjab known as Thal Doab for investigating origin, recharge and age/residence time of groundwater. Surface water and groundwater samples were collected from 211 sampling points spread over the entire study area. The sampling points included rivers/canals representing the surface water, hand pumps representing shallow groundwater and tube wells representing deep groundwater. Rain samples were also collected at Chashma. The collected samples were analyzed for environmental isotopes (2H, 3H, 18O). Isotopic data of recharge sources indicated that rivers/canals and rainfall have quite different signatures. Data of groundwater clearly demonstrated spatial variation of isotopic composition illustrating recharge from different sources and in varying proportions. Rain appears to be the main source of recharge in upper eastern part of the doab. Rest of the area is mainly recharged by surface water. 18O values of shallow and deep groundwater showed similar geographical distribution proving that they are interconnected and have same recharge mechanism. Groundwater has different age/residence time in various zones ranging from fresh to more than 50 years.

References

N. Ahmad., Groundwater Resources of Pakistan,

Rippon Printing Press, Lahore, Pakistan (1974).

D.W. Greenman, W.V. Swarzenski and G.D.

Bennett, Groundwater Hydrology of the Punjab,

Bulletin 6, Water and Soil Investigation Division,

Water and Power Development Authority, Lahore,

Pakistan (1987).

R. Siddiqi and S.A.T. Kazmi, The Geology of

Thal Doab, Bulletin 7, Water and Soil

Investigation Division, Water and Power

Development Authority, Lahore, Pakistan (1963).

International Atomic Energy Agency, Stable

Isotope Hydrology, Technical Report Series No.

, Vienna, Austria (1981).

International Atomic Energy Agency, Guidebook

on Nuclear Techniques in Hydrology, Technical

Report Series No. 91, Vienna, Austria (1983).

H. Craig, Science 133 (1961) 105.

M. Ahmad, Radiometric Analysis of Groundwater

for Environmental Isotopes and Hydrological

Applications in Selected Areas of Indus Basin,

Pakistan, Ph.D. Dissertation, University of the

Punjab, Lahore, Pakistan (2000).

W.G. Mook, Environmental Isotopes in the

Hydrological Cycle, Principles and Applications,

International Hydrological Programme, Technical

Documents in Hydrolog, Vol. I, No. 39,

UNESCO, Paris, France (2000).

S. Epstein and T. Mayeda, Geochem.

Cosmochem. Acta 4 (1953) 213.

M.I. Sajjad, Isotope Hydrology in Pakistan,

Instrumentation- Methodology- Applications,

Ph.D. Dissertation, University of the Punjab,

Lahore, Pakistan (1989).

T. Florkowski, Low level tritium assay in water

samplers by electrolytic enrichment and liquid

scintillation counting in the IAEA laboratory, In:

Methods of Low Level Counting and

Spectrometry, IAEA, Vienna (1981).

L. Araguas, K. Froelich and K. Rozanski, J.

Geophys. Res. 103 (1998) 721.

S.D. Hussain, M.I. Sajjad, W. Akram, M. Ahmad

and M. Rafiq, Science International 5 (1993) 3.

M. Ahmad, Z. Latif, J.A. Tariq, W. Akram and M.

Rafique, PINSTECH Report No. 215 (2009).

I.D. Clark and P. Fritz, Environmental Isotopes in

Hydrogeology, Lewis Publishers, Boca Reaton,

New York, USA (1998).

Downloads

Published

22-04-2014

How to Cite

Akram, W., Latif, Z., Iqbal, N., & Tasneem, M. A. (2014). ISOTOPIC INVESTIGATION OF GROUNDWATER RECHARGE MECHANISM IN THAL DOAB. The Nucleus, 51(2), 187–197. Retrieved from http://www.thenucleuspak.org.pk/index.php/Nucleus/article/view/703

Issue

Section

Articles