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Model description and calibration can be f … Model description and calibration can be found in:</br></br>Leonardi, N., and S. Fagherazzi (2014), How waves shape salt marshes, Geology , doi:10.1130/G35751.1.</br></br>Leonardi, N., and S. Fagherazzi (2015), Local variability in erosional resistance affects large scale morphodynamic response of salt marshes to wind waves, Geophysical Research Letters, 2015GL064730, doi:10.1002/2015GL064730.s, 2015GL064730, doi:10.1002/2015GL064730. +
United States +
Sergio +
Boston University +
Fagherazzi +
Massachusetts +
Project manager +
No but possible +
No but possible +
No but possible +
Single Processor +
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15:25:18, 17 July 2015 +
Model description and calibration can be f … Model description and calibration can be found in:</br></br>Leonardi, N., and S. Fagherazzi (2014), How waves shape salt marshes, Geology , doi:10.1130/G35751.1.</br></br>Leonardi, N., and S. Fagherazzi (2015), Local variability in erosional resistance affects large scale morphodynamic response of salt marshes to wind waves, Geophysical Research Letters, 2015GL064730, doi:10.1002/2015GL064730.s, 2015GL064730, doi:10.1002/2015GL064730. +
wind waves,
soil resistance / shear strength +
salt marsh erosion rate,
shape of marsh boundary,
erosion time,
magnitude of erosion events
frequency occurrence erosion events of a given magnitude +
Salt marsh erosion by wind waves.
The pre … Salt marsh erosion by wind waves. </br>The presence of natural heterogeneities is an integral characteristic of salt marshes and needs to be account for, as local feedbacks could influence the large scale morphodynamic evolution of these wetlands. Herein, we use field data and a cellular automata model to investigate salt marsh response to wave action under different wave energy conditions and frequency of extreme events.onditions and frequency of extreme events. +
The model reproduce the effect of a variab … The model reproduce the effect of a variability in soil resistance on salt marsh erosion by wind waves.</br>The model consists of a two-dimensional square lattice whose elements, i, have randomly distributed resistance, r_i. The critical soil height H_ci for boundary stability is calculated from soil shear strength values and is assumed as representative of soil resistance, as it is a convenient way to take into account general soil and ambient conditions. The erosion rate of each cell, E_i, which represents the erosion of an homogeneous marsh portion, is defined as:</br>E_i=〖αP〗^β exp (-H_ci/H)</br>Where α and β are non-dimensional constants set equal to 0.35 and 1.1 respectively, P is the wave power, and H is the mean wave height. </br>The model follows three rules: i) only neighbors of previously eroded cells can be eroded. Therefore, only cells having at least one side in common with previously eroded elements are susceptible to erosion; ii) at every time step one element is eroded at random with probability p_i=E_i/(∑E_i ); iii) A cell is removed from the domain if it remains isolated from the rest of the boundary (no neighbors).m the rest of the boundary (no neighbors). +
Nicoletta +
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ASCII +
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0.17 +
Coastal +
auto_marsh +
cellula +, attack +, reproduce the effect +, salt marsh erosion +, soil resistance +, model reproduce +, soil +, salt marsh +, randomly distributed resistance +, model +, wind waves +, resistance +, erosion +, eroded +, model consists +, critical soil height +, distributed resistance +, cellula automata +, extreme events +, ecogemorphology + and auto marsh +
Single +
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02:17:55, 17 September 2020 +
2 +
Cellula automata model for salt marsh evolution with variable soil resistance under wind waves attack +
ASCII +
02215 +
false +
false +
GPL v3 +
Matlab +
Through web repository +
https://github.com/csdms-contrib/Auto_marsh +
Model developer +
