Earth Science Frontiers ›› 2009, Vol. 16 ›› Issue (6): 276-281.

• Article • Previous Articles     Next Articles

The estimation of aquifer parameters using tidal effect in a coastal aquifer: A case study in Beihai Peninsula, Guangxi China.

 JIA Yu-Jiang, LI Hai-Long   

  1. 1School of Environmental Studies; (MOE) Biogeology and Environmental Geology Lab, China University of Geosciences(Wuhan), Wuhan 430074, China 2Department of Civil and Environmental Engineering; Environmental Hydrology and Hydraulics Laboratory (EHH), Temple University, Philadelphia PA19122, USA 3School of Water Resources and Environment, China University of Geosciences(Beijing), Beijing 100083, China
  • Received:2009-03-10 Revised:2009-09-15 Online:2009-12-16 Published:2009-12-10

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Abstract:

 How to estimate aquifer parameters or to confirm the extending length of the aquifer under the sea or the existence of the aquifer submarine outletcapping via the analysis of the observed data of water level dynamic condition in observation well has attracted much attention from hydrogeologists. Based on the well acquaintance with the hydrogeological conditions in the Beihai Peninsula, Guangxi Autonomous Region, China, we can conceptualize the first confined aquifer in this area into a vertical threelayered nonstationary flow model with the aquifer submarine outletcapping and the leakage through the aquifers roof. The analytical solution to this model is applied to analyze the tidal and piezometer data in a coastal aquifer of the Beihai Peninsula in this paper. The aquifer parameters are estimated using leastsquares objective function with novel penalty functions incorporating known information. The solution prediction closely fits with the observation very well.

Key words:  coastal multilayered aquifer system; submarine outletcapping; tidal effect; leastsquares penalty method; aquifer parameter estimation