Journals (selected list)

2011

The following article has been selected as the Editor’s Choice Article of the year 2011 in the Hydrogeology Journal published by Springer.

• Perrin J., Ahmed S., Hunkeler D. (2011) The effects of geological heterogeneities and piezometric fluctuations on groundwater flow and chemistry in a hard-rock aquifer, southern India, Hydrogeology Journal, 19(6):1189-1201.

2010

• Chandra, S., B. Dewandel, S. Dutta and S. Ahmed (2010) Geophysical model of geological discontinuities in a granitic aquifer; analyzing small scale variability of electrical resistivity for groundwater occurrences,  Jr. of Applied Geophysics, Vol. 71:137-148.
• Dewandel, B., Perrin, J., Ahmed, S., Aulong, S., Hrkal, Z., Lachassagne, P., Samad, M., Massuel, S. 2010. Development of a Tool for managing groundwater resources in semi-arid hard rock regions. Application to a rural watershed in south India. Hydrological Processes 24: 2784–2797 DOI: 10.1002/hyp.7696
• Sreedevi, P.D., Ahmed, S. and Gandolfi, JM (2010) Artificial Recharge to an over-exploited granite aquifer: A practical and extremely low cost experiment through defunct dug-well, Jr. of Environmental Earth Sciences, Accepted.
• Perrin, J., Mascre, C., Pauwels, H., Ahmed, S. 2010. Solute recycling: an emerging threat to groundwater resources in southern India? Submitted to Journal of Hydrology
• Perrin J., Ahmed S., Hunkeler D. 2010. The role of geological heterogeneities and piezometric fluctuations on groundwater flow and chemistry in hard-rock, southern India. Submitted to Hydrogeology Journal
• Negrel P., Pauwels H., Dewandel B., Mascre C., Gandolfi JM., Ahmed S. 2010. Stable isotope of the water molecule imaging the groundwater system and functioning (Maheshwaram catchment, Andhra Pradesh, India). Submitted to Journal of Hydrology
• Atal S., Mascré C., Pauwels H., Ahmed S. 2010. Release of Geogenic Fluorine to Groundwater from Granitic aquifer: Petrographic & Electron probe evidences of Mineral alteration- Example from S. India. Submitted to Applied Geochemistry
• Dewandel B., Lachassagne P., Zaidi F.K., Chandra S. 2010. Hydrodynamic role of geological discontinuities in hard rock aquifers: example of quartz reef in granitic terrain. Submitted to Journal of Hydrology
• Négrel, P., Millot, R., Roy, S., Guerrot, C., Pauwels, H. 2010. Lead isotopes in groundwater as an indicator of water-rock interaction (Maheshwaram catchment, Andhra Pradesh, India). Chemical Geology 274: 136–148.  doi:10.1016/j.chemgeo.2010.03.012 (??)

2008

• Dewandel B., JM Gandolfi, D. de Condappa and S. Ahmed (2008) An Efficient Methodology for Estimating Irrigation Return Flow Coefficients of Irrigated Crops at Watershed and Seasonal Scales, Hydrological Processes, in Press
• N. Linde, D. Jougnot, A. Revil, S. Matthäi, Tanvi Arora, D. Renard and C. Doussan (2007) Streaming Current Generation in Two-Phase Flow Conditions, Geophysical Research Letters, Accepted.

2007

• Tanvi Arora, N. Linde, A. Revil, and J. Castermant (2007) Non-intrusive characterization of the redox potential of landfill leachate plumes from self-potential data. Journal of Contaminant Hydrology, doi: 10.1016/j.jconhyd.2007.01.018, In press
• Faisal K. Zaidi, S. Ahmed, J.C. Maréchal and B. Dewandel (2007) Optimizing a piezometric network in the estimation of the groundwater budget: A case study from a crystalline-rock watershed in South India, Hydrogeology Journal 15: 1131-1145.
• Dewandel, B., J.M. Gandolfi, Faisal K. Zaidi, S. Ahmed, and K. Subrahmanyam (2007) A Decision Support Tool with variable agro-climatic scenarios for sustainable Groundwater Management in Semi-arid Hard-Rock areas, Current Science, Vol. 92(8):1093-1102..
• Dewashish Kumar, S. Ahmed, N.S. Krishnamurthy and Benoit Dewandel (2007) Reducing ambiguities in vertical electrical sounding interpretations: A geostatistical application, Journal of Applied Geophysics, Vol. 62:16-32

2006

• Maréchal, J.C., Dewandel, B., Ahmed, S., L. Galeazzi and Faisal K. Zaidi (2006) Combining the groundwater budget and water table fluctuation methods to estimate specific yield and natural recharge, Jour. of Hydrology, V. 329 pages 281-293.
  
  
• Dutta S., Krishnamurthy, N.S., Arora T., Rao, V.A., S. Ahmed and Baltassat, J.M. (2006) Localization of water bearing fractured zones in a hard rock area using integrated geophysical techniques in Andhra Pradesh, India, Hydrogeology Journal, Vol. 14(5):760-766.

• Sreedevi, P.D., S. Ahmed, B. Made, E. Ledoux and JM Gandolfi (2006) Association of Hydrogeological factors in temporal variations of fluoride concentration in a crystalline aquifer in India, Environmental Geology, 50(1):1-11.
• Dewandel, B. P. Lachassagne, R. Wyns, JC Marechal and NS Krishnamurthy (2006), A Generalized 3-D Geological and Hydrogeological Conceptual Model of Granite Aquifers Controlled by a single or Multiple Weathering, J. of Hydrology, Vol. 330:260-284
• Marechal, J.C., S. Ahmed, L. Galeazzi, and F Touchard (2006) Threatened groundwater resources: a case study from rural India, Asian Jr. of Water and Env. Pollution, Vol. 3(2):15-21.

2004

• Maréchal, J.C., Dewandel, B., and Subrahmanyam, K., 2004. Use of hydraulic tests at different scales to characterize fracture network properties in the weathered-fractured layer of a hard rock aquifer, Water Resources Research, Vol. 40, W11508, 1-17.

• Ahmed, S. (2004) Geostatistical Estimation Variance approach to optimizing an air temperature monitoring network, Water, Air and Soil Pollution, 158 (1): 387-399.
• Maréchal, J.C., Wyns, R., Lachassagne, P., and Subrahmanyam, K., 2004. Vertical anisotropy of hydraulic conductivity in the fissured layer of hard rock aquifers due to geological structure of weathering profiles, Journal of The Geological Society of India, Vol. 63, No. 5, May 2004, 545-550.

2003

• Maréchal, J.C., Wyns, R., Lachassagne, P., Subrahmanyam, K., and Touchard, F., 2003. Anisotropie verticale de la perméabilité de l’horizon fissure des aquifères de socle: concordance avec la structure géologique des profiles d’altération, C.R., Geoscience, 335, 451-460.
• Maréchal, J.C., Dewandel, B., Subrahmanyam, K., and Torri, R., 2003. Specific methods for the evaluation of hydraulic properties in fractured hard-rock aquifers, Current Science, Vol. 85, No.4, 25 August 2003, 511-516. 
• Maréchal, J.C., Galeazzi, L., Dewandel, B., and Ahmed, S., 2003. Importance of irrigation return flow on the groundwater budget of a rural basin in India, published in IAHS Red Book, Publication No. 278, 62-67, 2003.

• V.K. Saxena and Shakeel Ahmed (2003) Inferring the chemical parameters for the dissolution of Fluoride in groundwater, Environmental Geology, Vol. 43(6):731-736.

2002

• Maréchal, J.C., Sarma, M.P., Ahmed, S., and Lachassagne, P., 2002. Establishment of earth tide effect on water-level fluctuations in an unconfined hard rock aquifer using spectral analysis, Current Science, Vol. 83, No.1, 10 July, 2002, 61-64.
• Ahmed, S., Bertrand, F., Saxena, V.K., Subrahmanyam, K., and Touchard, F., 2002. A geostatistical method of determining priority of measurement wells in a fluoride monitoring network in an aquifer, Journal of Applied Geochemistry, Vol. 4, No. 2B, 576-585.

Chapters in Book

• Ahmed, S. (2006) Application of Geostatistics in Hydrosciences, Thangarajan M. (Ed.) ‘Groundwater Resource Evaluation, Augmentation, Contamination, Restoration, Modeling and Management’, Capital Pub. Co., p. 78-111.
• Ahmed, S., B. Dewandel, JM Gandolfi and K. Subrahmanyam (2006) A scientific decision tool for groundwater management: Could artificial recharge alone be a sustainable solution? In Salamat, A.R. and Salih A. (eds.) “Management of Artificial Recharge and Rainwater harvesting”, Proc. of a workshop in Lahore, Pakistan, April 25 to May 2, 2005, UNESCO publications, p. 87-119.
• Ahmed, S., K. Subrahmanyam, P.D. Sreedevi and JM Gandolfi (2006) Artificial Recharge to an over-exploited granitic aquifer through defunct dug-wells, a chapter in Neupane, B, Jayakumar, R., Salamat, A. and Salih, A. (Eds.) “Management of Aquifer Recharge and Water harvesting in Arid and Semi-arid Regions of Asia”, Oxford and IBH Publishing Co. Pvt. Ltd., New Delhi, p. 189-206 (ISBN 81-204-1678-3).
• Ahmed, S., J.C. Maréchal, E. Ledoux and G. de Marsily (2006) Groundwater Flow Modeling In Hard-Rock Terrain In Semi-Arid Areas: Experience From India, a Chapter (Chapter XI) in a Book On G-WADI, H. Wheater, S. Sooroshian and KD Sharma (eds.), Cambridge University Press, 54 pages.
• Maréchal, J.C., B. Dewandel, S. Ahmed and P. Lachassagne (2007) Hard rock aquifers characterization prior to modelling at catchment scale: an application in India, Special Issue of IAH Publication SP-04, Springer.
• Ahmed, S., 2001. Regionalization of aquifer parameters for groundwater modeling including monitoring network design, In Elango, L. & Jayakumar, R. (eds.), “Modeling in hydrogeology”, Allied Publishers Limited, India, p. 39-57.