A device for the measurement of infiltration in intermittently flooded wetlands1

Hemond, Harold F.; Burke, Roger

doi:10.4319/lo.1981.26.4.0795

Cited by 11 publications

(5 citation statements)

References 3 publications

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“…Vertical flow can be generated at rising tide by overlying water infiltrations or water discharge to the overlying waters [22,23]. Infiltrations may either take place when water fills empty pore spaces above the water table [24], when cold overlying waters mix with porewaters warmed at low tide during the day [25], or as a result of the interaction of overlying water flow and rippled beds or mounds [21]. Simultaneously, vertical flow can also be generated at ebb tide if the hydrostatic pressure is increased at depth and forces the porewaters to the surface [24].…”

Section: Introductionmentioning

confidence: 99%

“…Infiltrations may either take place when water fills empty pore spaces above the water table [24], when cold overlying waters mix with porewaters warmed at low tide during the day [25], or as a result of the interaction of overlying water flow and rippled beds or mounds [21]. Simultaneously, vertical flow can also be generated at ebb tide if the hydrostatic pressure is increased at depth and forces the porewaters to the surface [24]. Vertical flow is usually favored in marshes with flat topography, in coarse-grained sediments, in rippled sediments, or in confined zones such as creeks surrounded by banks.…”

Section: Introductionmentioning

confidence: 99%

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The effect of tidal forcing on biogeochemical processes in intertidal salt marsh sediments

2007

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Background: Early diagenetic processes involved in natural organic matter (NOM) oxidation in marine sediments have been for the most part characterized after collecting sediment cores and extracting porewaters. These techniques have proven useful for deep-sea sediments where biogeochemical processes are limited to aerobic respiration, denitrification, and manganese reduction and span over several centimeters. In coastal marine sediments, however, the concentration of NOM is so high that the spatial resolution needed to characterize these processes cannot be achieved with conventional sampling techniques. In addition, coastal sediments are influenced by tidal forcing that likely affects the processes involved in carbon oxidation.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

The effect of tidal forcing on biogeochemical processes in intertidal salt marsh sediments

2007

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“…The only attempt to directly measure infiltration (and exfiltration) was that by Hemond et al (1984) who found that this component of the water balance in a New England marsh amounted to only a few millimeters per tidal inundation. Given the elaborate instrumentation required for such measurements (Hemond and Burke, 1981), it is not surprising that subsequent studies have resorted to theory and calculation in estimating this flux.…”

Section: Introductionmentioning

confidence: 99%

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Gardner

Reeves

2002

Aquat Sci

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Time series of water levels in piezometer nests along a forest-marsh transect near North Inlet, SC, show fluctuations that are attributable to recharge by precipitation and tidal flooding and to removal by evapotranspiration (ET) and seepage out of the soil. Volumes of water associated with these water level changes were estimated by correlating rain-induced water level increases with measured rainfalls. In the forest the ratio of water table rise to rainfall is about 10. This ratio increases with decreasing elevation to about 40 in the mid marsh where the antecedent soil moisture is generally higher. Aquatic SciencesThe relative influence of removal by ET and seepage and recharge by rain and tides varies systematically along the transect. In the mainland forest, loss of water by ET is somewhat less than infiltration, leading to a net recharge of fresh water which eventually discharges in the adjacent mid marsh. With decreasing elevation, the relative importance of recharge by rain decreases as recharge by tidal flooding increases. In the low marsh, however, these mechanisms of loss and recharge can not be discerned in the water level time series because the water table rarely, if ever, drops below the marsh surface.

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“…The infiltration measurements at the two marshes were accomplished with a new design of active infiltrometer, which isolates a column of water on the marsh surface while duplicating natural head conditions [Hemond and Burke, 1981].…”

Section: Direct Infiltration Measurementmentioning

confidence: 99%

Surface Infiltration in Salt Marshes: Theory, Measurement, and Biogeochemical Implications

Hemond¹,

Nuttle²,

Burke³

et al. 1984

Water Resources Research

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The extent of water movement across the surface sediment‐water interface of the salt marsh during tidal inundation is of great biochemical importance, because in large part it determines the degree of exchange of nutrients and metabolic products between marsh sediment and estuarine waters. The principles of flow in porous, elastic media lead to an analytical expression for infiltration during tidal inundation of the marsh surface; this analytical model is the basis for inferences of surface seepage using recording piezometers. The magnitudes of infiltration determined by this method in Great Sippewissett Marsh agree well with values obtained by direct active seepage meter techniques and are of the order of a few millimeters per inundation, substantially less than some previous estimates for this marsh. Upper limits on the magnitudes of biogeochemical fluxes of nitrogen, carbon, and sulfur compounds are implied by these data.

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A device for the measurement of infiltration in intermittently flooded wetlands1

Cited by 11 publications

References 3 publications

The effect of tidal forcing on biogeochemical processes in intertidal salt marsh sediments

The effect of tidal forcing on biogeochemical processes in intertidal salt marsh sediments

Untitled

Surface Infiltration in Salt Marshes: Theory, Measurement, and Biogeochemical Implications

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