Tide-induced groundwater head fluctuation in coastal multi-layered aquifer systems with a submarine outlet-capping

Qiaona Guo, Hailong Li, Michel C. Boufadel, Yuqiang Xia, Guohui Li

Research output: Contribution to journalArticlepeer-review

32 Scopus citations

Abstract

This paper considered the tide-induced head fluctuations in two coastal multi-layered aquifer systems. Model I comprises two semi-permeable layers and a confined aquifer between them. Model II is a four-layered aquifer system including an unconfined aquifer, an upper semi-permeable layer, a confined aquifer and a lower semi-permeable layer. In each model, the submarine outlet of the confined aquifer is covered with a skin layer ("outlet-capping"). Analytical solutions of the two models are derived. In both models, leakages of the semi-permeable layers decrease the tidal head fluctuations. The outlet-capping reduces the aquifer's head fluctuation by a constant factor and shifts the phase by a positive constant. The solution to Model II explains the inconsistency between the relatively small lag time and the strong amplitude damping effect of the tidal head fluctuations reported by Trefry and Johnston [Ground Water 1998;36:427-33] near the Port Adelaide River, Australia.

Original languageEnglish (US)
Pages (from-to)1746-1755
Number of pages10
JournalAdvances in Water Resources
Volume30
Issue number8
DOIs
StatePublished - Aug 2007
Externally publishedYes

All Science Journal Classification (ASJC) codes

  • Water Science and Technology

Keywords

  • Analytical solution
  • Aquifer parameter estimation
  • Coastal aquifer system
  • Elastic storage
  • Leakage
  • Least-squares method
  • Outlet-capping
  • Peaty layer
  • Tidal head fluctuation
  • Tide

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