Numerical Modeling of Tidal Effects on Groundwater in the Coastal Aquifer of Donghai Island

  • P. P. Zhou
  • G. M. LiEmail author
  • M. Li
  • Y. H. Dong
Conference paper
Part of the Springer Geology book series (SPRINGERGEOL)


In coastal region, tide takes an important role to affect the dynamics of the groundwater flow and saltwater transport. To analyze tidal effects on groundwater flow and saltwater transport in the unconfined coastal aquifer of Donghai Island, we develop a two-dimensional, finite-difference groundwater model. The model which is based on density-dependent fluid flow theory considers dynamic tidal boundary conditions and sloping beach surface. We simulated groundwater flow and the salt concentration distribution which forms the salt wedge in the coastal aquifer, as well as analyzed the dynamic characteristics of the groundwater flow and the salt concentration distribution during the flood-and-ebb process. Simulations indicate that fluid velocity in freshwater is greater than that in saltwater. Velocity decreases with depth, but increases along the freshwater-saltwater interface or dispersion zone in the coastal aquifer. Tidal action drives seawater recirculation through the intertidal beach zone, thereby creating an upper saline plume in the aquifer. And the water table in the upper saline plume area is higher than that in the freshwater area.


Tidal effects Groundwater flow Salt concentration distribution 


  1. Ataie-Ashtiani, B., Volker, R., & Lockington, D. (1999). Tidal effects on sea water intrusion in unconfined aquifers. J Hydrol, 216, 17–31.CrossRefGoogle Scholar
  2. Guo W, Langevin C (2002) User’s guide to SEAWAT: a computer program for simulation of three-dimensional variable-density groundwater flow. In: U.S. geological survey techniques of water-resources investigations, FloridaGoogle Scholar
  3. Narayan, K., Schleeberger, C., & Bristow, K. (2007). Modelling seawater intrusion in the Burdekin Delta Irrigation Area, North Queensland, Australia. Agricultural Water Management, 89, 217–228.CrossRefGoogle Scholar
  4. Ranganathan, V., & Hanor, J. (1988). Density-driven groundwater flow near salt domes. Chem Geol, 74, 173–188.CrossRefGoogle Scholar
  5. Robinson, C., Li, L., & Barry, D. (2007). Effect of tidal forcing on a subterranean estuary. Adv Water Res, 30, 851–865.CrossRefGoogle Scholar
  6. Robinson, C., Brovelli, A., Barry, D., et al. (2009). Tidal influence on BTEX biodegradation in sandy coastal aquifers. Adv Water Res, 32, 16–28.CrossRefGoogle Scholar
  7. Yakirevich, A., Melloul, A., Sorek, S., et al. (1998). Simulation of seawater intrusion into the Khan Yunis area of the Gaza Strip coastal aquifer. Hydrogeol J, 6, 549–559.CrossRefGoogle Scholar
  8. Zhang, Q. (2005). An experimental study of seawater intrusion. Hydrogeol Eng Geol, 4, 43–47.Google Scholar

Copyright information

© Springer-Verlag Berlin Heidelberg 2013

Authors and Affiliations

  1. 1.China Academy of Sciences, Institute of Geology and GeophysicsBeijingChina

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