Fetch and distance from the bay control accretion and erosion patterns in Terrebonne marshes (Louisiana, USA)
Fetch and distance from the bay control accretion and erosion patterns in Terrebonne marshes (Louisiana, USA)
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海湾的获取和距离控制 Terrebonne 沼泽的增生和侵蚀模式(美国路易斯安那州)
DOI:
10.1002/esp.5327
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发表时间:
2022
影响因子:
3.3
通讯作者:
Fagherazzi, Sergio
中科院分区:
文献类型:
--
作者:
Cortese, Luca;Fagherazzi, Sergio
Wetlands in the Mississippi River Delta are rapidly degrading. Sea level rise and low sediment supply are widely recognized as the two main factors contributing to land‐to‐water conversion. To determine what marsh areas are more resilient, it is fundamental to identify the drivers that regulate marsh accretion and degradation. In this study, a combination of field data and aerial images is used to determine these drivers in Terrebonne Bay, Louisiana, USA. We find that accretion and degradation patterns depend on whether the marsh is located inland in a sheltered area or facing open water. In the first case, the distance to the nearby channel is important, because during flooding of the marsh platform more sediment is deposited in the proximity of channel banks. The accretion rates of marshes facing open water are high and correlate to fetch, a proxy for the ability of waves to resuspend bottom sediment. These areas are more resilient to sea level rise, but waves are also the main mechanism of degradation, as these marshes tend to degrade by edge erosion. Consequently, we propose a bimodal evolution trajectory of the marshes in Terrebonne Bay: marshes close to the bay and facing open water accrete rapidly but are affected by lateral erosion due to waves, whereas sheltered marshes accrete slowly and degrade in large swathes due to insufficient sediment supply.
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DOI:
10.1002/2016jf003900
发表时间:
2016-07
期刊:
Journal of Geophysical Research: Earth Surface
影响因子:
--
作者:
G. Mariotti
通讯作者:
G. Mariotti
DOI:
--
发表时间:
2002
期刊:
影响因子:
--
作者:
S. Neubauer;I. Anderson;J. Constantine;S. Kuehl
通讯作者:
S. Kuehl
DOI:
10.5194/hess-2016-225-rc1
发表时间:
2016
期刊:
--
影响因子:
--
作者:
N. Ganju;Z. Defne;M. Kirwan;S. Fagherazzi;A. D’Alpaos;L. Carniello
通讯作者:
N. Ganju;Z. Defne;M. Kirwan;S. Fagherazzi;A. D’Alpaos;L. Carniello
影响因子:
4.5
作者:
G. Mariotti;T. Elsey‐Quirk;G. Bruno;K. Valentine
通讯作者:
K. Valentine
影响因子:
4.7
作者:
G. Mariotti
通讯作者:
G. Mariotti