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In the paper ‘A Semi-Analytical Solution for Large-Scale Injection-Induced Pressure Perturbation and Leakage in a Laterally Bounded Aquifer–Aquitard System’ by Quanlin Zhou, Jens T. Birkholzer and Chin-Fu Tsang, Transport in Porous Media (2009), vol. 78, pp. 127–148 (doi:10.1007/s11242-008-9290-0) the authors study nicely the influences of pressure perturbations on a system of an aquifer and an overlying or underlying aquitard. In the sequel, we denote by Zh(i) equation (i) in their paper. In this Comment, we shall point out a serious mistake in the derivation of their results. The authors scale their dependent (h, h′) and independent variables (r, z and t) and subtract from h(r, t) (head in the aquifer) and h′(r, z, t) (head in the aquitard) the corresponding initial conditions hi (r), hi (r, z), respectively, as

transport in porous media

Comment on ‘A Semi-Analytical Solution for Large-Scale Injection-Induced Pressure Perturbation and Leakage in a Laterally Bounded Aquifer–Aquitard System’ by Quanlin Zhou, Jens T. Birkholzer and Chin-Fu Tsang, Transport in Porous Media, doi:10.1007/s11242-008-9290-0