High-Precision Measurements of Wetland Sediment Elevation: I. Recent Improvements to the Sedimentation-Erosion Table

Cahoon, Donald R.; Lynch, James C.; Hensel, Philippe; Boumans, Roelof; Perez, Brian C.; Segura, Bradley; Day, John W.

doi:10.1306/020702720730

Cited by 156 publications

(63 citation statements)

References 8 publications

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“…It was developed to quantify the surface and shallow subsurface processes that contribute to wetland surface elevation change 37,38 . An RSET involves very simple technology; it consists of a benchmark rod driven through the soil profile to resistance (typically 10-25 m depth), and a portable horizontal arm that is attached at a fixed point to measure the distance to the substrate surface, using vertical pins ( Fig.…”

Section: Simple Affordable High-precision Datamentioning

confidence: 99%

A global standard for monitoring coastal wetland vulnerability to accelerated sea-level rise

et al. 2013

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Section: Simple Affordable High-precision Datamentioning

confidence: 99%

A global standard for monitoring coastal wetland vulnerability to accelerated sea-level rise

et al. 2013

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“…Thus, assessing coastal wetland vulnerability to sea-level rise requires a quantitative understanding of not only RSLR but also marsh surface elevation change. To this end, the surface elevation table-marker horizon (SET-MH) method was developed (Cahoon et al 1995(Cahoon et al , 2002aCallaway et al 2013) to provide simultaneous, millimeter accuracy measures of vertical accretion and surface elevation change, from which shallow subsidence or expansion of the marsh substrate is calculated.…”

Section: Wetland Elevation Changementioning

confidence: 99%

“…The SET is a portable, mechanical device that is attached to a pipe or rod mark driven into a wetland substrate (Boumans and Day 1993;Cahoon et al 2002a, b;Callaway et al 2013). The latest version of the SET attaches to a stainless steel rod driven typically 10-25 m (up to 40 m) into the substrate, and is known as the Rod SET ( Figs.…”

Section: Wetland Elevation Changementioning

confidence: 99%

Estimating Relative Sea-Level Rise and Submergence Potential at a Coastal Wetland

Cahoon

2014

Estuaries and Coasts

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A tide gauge records a combined signal of the vertical change (positive or negative) in the level of both the sea and the land to which the gauge is affixed; or relative sealevel change, which is typically referred to as relative sea-level rise (RSLR). Complicating this situation, coastal wetlands exhibit dynamic surface elevation change (both positive and negative), as revealed by surface elevation table (SET) measurements, that is not recorded at tide gauges. Because the usefulness of RSLR is in the ability to tie the change in sea level to the local topography, it is important that RSLR be calculated at a wetland that reflects these local dynamic surface elevation changes in order to better estimate wetland submergence potential. A rationale is described for calculating wetland RSLR (RSLR wet ) by subtracting the SET wetland elevation change from the tide gauge RSLR. The calculation is possible because the SET and tide gauge independently measure vertical land motion in different portions of the substrate. For 89 wetlands where RSLR wet was evaluated, wetland elevation change differed significantly from zero for 80 % of them, indicating that RSLR wet at these wetlands differed from the local tide gauge RSLR. When compared to tide gauge RSLR, about 39 % of wetlands experienced an elevation rate surplus and 58 % an elevation rate deficit (i.e., sea level becoming lower and higher, respectively, relative to the wetland surface). These proportions were consistent across saltmarsh, mangrove, and freshwater wetland types. Comparison of wetland elevation change and RSLR is confounded by high levels of temporal and spatial variability, and would be improved by co-locating tide gauge and SET stations near each other and obtaining longterm records for both.

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“…Various studies have developed methods for monitoring in situ sediment accumulation rates, with a wide-range of techniques and accuracy. Installed monitoring devices, such as sediment traps (Gardner et al 1980;Bale 1998), graduated pins (Reed 1989;Cahoon & Lynch 1997;Callaway et al 2009), anchored tiles (Reed 1989;Pasternack & Brush 1998) and sediment erosion tables (Boumans & Day 1993;Childers et al 1993;Cahoon et al 2002), are inexpensive and effective methods for estimating accumulation rates, but provide limited sampling points. SSC estimates are often used to indirectly measure sediment accumulation rates, and they can be obtained through in situ measurements and remote sensing techniques (Stumpf & Pennock 1989;Froidefond et al 1993;Ruhl et al 2001;Li et al 2003;Miller & McKee 2004).…”

Section: Introductionmentioning

confidence: 99%

Estuarine sediment deposition during wetland restoration: A GIS and remote sensing modeling approach

Newcomer

Kuss

Ketron

et al. 2013

Geocarto International

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Restoration is currently underway in the industrial salt flats of San Francisco Bay, California. Remote sensing of suspended sediment concentration and other geographical information system predictor variables were used to model sediment deposition within recently restored ponds. Suspended sediment concentrations were calibrated to reflectance values from Landsat TM 5 and ASTER satellite image data using three statistical techniques -linear regression, multivariate regression and artificial neural network (ANN) regression. Multivariate and ANN regressions using ASTER proved to be the most accurate methods, yielding r 2 values of 0.88 and 0.87, respectively. Predictor variables such as sediment grain size and tidal frequency were used in the marsh sedimentation (MARSED) model for predicting deposition rates. MARSED results show a root-mean-square deviation of 66.8 mm (<1σ) between modelled and field observations. This model was applied to a pond breached in November 2010 and indicated that the pond will reach sediment equilibrium levels after 60 months of tidal inundation.

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High-Precision Measurements of Wetland Sediment Elevation: I. Recent Improvements to the Sedimentation-Erosion Table

Cited by 156 publications

References 8 publications

A global standard for monitoring coastal wetland vulnerability to accelerated sea-level rise

A global standard for monitoring coastal wetland vulnerability to accelerated sea-level rise

Estimating Relative Sea-Level Rise and Submergence Potential at a Coastal Wetland

Estuarine sediment deposition during wetland restoration: A GIS and remote sensing modeling approach

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