A two‐dimensional analytical solution of groundwater response to tidal loading in an estuary

Sun, Hongbing

doi:10.1029/97wr00482

Cited by 104 publications

(89 citation statements)

References 7 publications

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“…[33] Many solutions to this problem have been derived [Steggewentz, 1933;Todd, 1980;Knight, 1981;Parlange et al, 1984;Nuttle, 1988;Hughes et al, 1998;Sun, 1997;Li et al, 2000aLi et al, , 2000bLi et al, , 2002Li and Jiao, 2003]. The solution derived here follows the linearized approach presented by Sun [1997].…”

Section: Process 3: Tidal Effectsmentioning

confidence: 99%

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A simple model for predicting water table fluctuations in a tidal marsh

Montalto

Parlange

Steenhuis

2007

Water Resources Research

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[1] Wetland restoration efforts are ongoing in many urban estuaries. In this context the hydrologic characteristics of restored wetlands are of paramount importance since the spatially and temporally variable position of the water table and of soil saturation establishes the oxidation state of the substrate, which, in turn, affects the wetland's biogeochemical composition and the biological communities it is capable of supporting. A relatively simple analytical model developed here describes tidal marsh hydrology from creek bank to interior, considering transient drainage, net meteorological inputs, and tidal effects. Given a series of physical and time-dependent inputs, the analytical solution derived predicts the position of the water table at points along a transect perpendicular to a tidal creek. Validation of the model using water table time series data collected along three transects at Piermont Marsh, a tidal wetland on the Hudson River in the New York/ New Jersey Estuary, indicates good general agreement between observations and predictions, although it may not be precise enough for some kinds of ecological applications. A sensitivity analysis on the model indicates that a range of pairs of transmissivity and specific yield values that increase with distance from the creek results in the same spatial and temporal fluctuations in the water table. This equifinality result is discussed as it relates to the predictive capacity of the model presented.

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Section: Process 3: Tidal Effectsmentioning

confidence: 99%

“…The solution derived here follows the linearized approach presented by Sun [1997]. It involves solving equation (1) with w = 0 and according to the following conditions:…”

Section: Process 3: Tidal Effectsmentioning

confidence: 99%

A simple model for predicting water table fluctuations in a tidal marsh

Montalto

Parlange

Steenhuis

2007

Water Resources Research

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“…Since the 1950s, a large number of analytical studies have been conducted on how groundwater responds to tidal fluctuation (Jacob, 1950;Jiao and Tang, 1999;Li et al, 2002Li et al, , 2007Nielsen et al, 1997;Sun, 1997;Townley, 1995;Trefry and Bekele, 2004). Most of these studies assumed that the aquifer is homogeneous.…”

Section: Introductionmentioning

confidence: 99%

Vulnerability of Eco-Hydrological Environment in the Yellow River Delta Wetland

Gao

Liu

Zhao

et al. 2014

Journal of Coastal Research

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We investigated the relationship between groundwater head and oceanic tidal fluctuations in the Yellow River Delta wetland through on-site hydrological monitoring. Shallow groundwater heads were obviously affected by oceanic tide along the coastal zone. The ranges of the wetland zone can be readily assessed by measuring fluctuation amplitudes or lags. The results show that the influence radius is approximately 12 km to 18 km (when the correlation coefficient is 0.7 to 0.8) under the joint actions of oceanic tide and shallow groundwater seepage flow in clayey silt coastal wetland. A cross-sectional sketch of the coastal wetland model is developed based on monitoring data of groundwater and oceanic tidal fluctuations to study the vulnerability of the eco-hydrological environment in the Yellow River Delta wetland. The coastal wetland consists of three zones (the groundwater seepage zone, the tidal-induced transitional zone, and the tidal zone) with distinctly different hydraulic properties. Analytical solutions are used to estimate the vulnerability of the ecohydrological environment in the wetland aquifer located in the NE part of the Yellow River Delta wetland, Shandong Province, China. Our results show that changes in the shallow groundwater quality of the wetland are significantly affected by natural factors, such as strong cutoff in the lower reaches, storm tides, and human engineering activities. The northern coastal wetland may be submerged without damp proof when the height of a storm tide reaches 2.4 m. The depth of shallow groundwater and the salinity gradient are key factors that contribute to the vulnerability of the ecological environment. The vulnerability of the eco-hydrological environment is derived from the joint actions of groundwater dynamics, hydrochemistry, and tidal-induced processes under sedimentary stress and water pressure.

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“…Money, 1986;Hong Kong Observatory, 1999). Sun (1997) extended the traditional one-dimensional solution into two-dimensional groundwater flow to investigate the groundwater response in a confined aquifer to tides with amplitude and phase that change along the coastal boundary.…”

Section: Introductionmentioning

confidence: 99%

“…Although the tidal fluctuation in the unconfined aquifer may be negligible compared with that in a confined aquifer, the unconfined aquifer may influence the tidal fluctuation in the underlying confined aquifer via leakage. Using mathematical procedures similar to those of Sun (1997), Jiao and Tang (1999) derived a one-dimensional analytical solution to investigate the influence of leakage on tidal response in a coastal leaky confined aquifer system. This solution was based on a conceptual model under the assumption that the groundwater head in the confined aquifer fluctuates in response to sea tide whereas that of the overlying unconfined aquifer remains constant.…”

Section: Introductionmentioning

confidence: 99%

A two‐dimensional analytical solution for groundwater flow in a leaky confined aquifer system near open tidal water

Tang

Jiao

2001

Hydrological Processes

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Abstract:Groundwater in coastal areas is commonly disturbed by tidal fluctuations. A two-dimensional analytical solution is derived to describe the groundwater fluctuation in a leaky confined aquifer system near open tidal water under the assumption that the groundwater head in the confined aquifer fluctuates in response to sea tide whereas that of the overlying unconfined aquifer remains constant. The analytical solution presented here is an extension of the solution by Sun for two-dimensional groundwater flow in a confined aquifer and the solution by Jiao and Tang for onedimensional groundwater flow in a leaky confined aquifer. The analytical solution is compared with a two-dimensional finite difference solution. On the basis of the analytical solution, the groundwater head distribution in a leaky confined aquifer in response to tidal boundaries is examined and the influence of leakage on groundwater fluctuation is discussed.

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A two‐dimensional analytical solution of groundwater response to tidal loading in an estuary

Cited by 104 publications

References 7 publications

A simple model for predicting water table fluctuations in a tidal marsh

A simple model for predicting water table fluctuations in a tidal marsh

Vulnerability of Eco-Hydrological Environment in the Yellow River Delta Wetland

A two‐dimensional analytical solution for groundwater flow in a leaky confined aquifer system near open tidal water

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