Articles | Volume 382
https://doi.org/10.5194/piahs-382-333-2020
https://doi.org/10.5194/piahs-382-333-2020
Pre-conference publication
 | 
22 Apr 2020
Pre-conference publication |  | 22 Apr 2020

Altered surface hydrology as a potential mechanism
for subsidence in coastal Louisiana

Jaap H. Nienhuis, Torbjörn E. Törnqvist, and Gilles Erkens

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Cited articles

Chai, J., Suddeepong, A., Liu, M. D., and Yuan, D.-J.: Effect of Daily Fluctuation of Groundwater Level on Land-Subsidence, Int. J. Geosynth. Gr. Eng., 3, 1–10, https://doi.org/10.1007/s40891-016-0079-x, 2017. 
Couvillion, B. R., Beck, H., Schoolmaster, D., and Fischer, M.: Land Area Change in Coastal Louisiana (1932 to 2016), U.S. Geological Survey, Washington DC, https://doi.org/10.3133/sim3381, 2017. 
Deverel, S. J. and Leighton, D. A.: Historic, Recent, and Future Subsidence, Sacramento-San Joaquin Delta, California, USA, San Fr., Estuary Watershed Sci., 8, 1–6, https://doi.org/10.15447/sfews.2010v8iss2art1, 2010. 
Frederick, B. C., Blum, M., Fillon, R., and Roberts, H.: Resolving the contributing factors to Mississippi Delta subsidence: Past and Present, Basin Res., 31, 171–190, https://doi.org/10.1111/bre.12314, 2019. 
Jankowski, K. L., Törnqvist, T. E., and Fernandes, A. M.: Vulnerability of Louisiana's coastal wetlands to present-day rates of relative sea-level rise, Nat. Commun., 8, 14792, https://doi.org/10.1038/ncomms14792, 2017. 
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Short summary
Decreased distance from the marsh to the marsh edge can lower groundwater tables and increase soil stresses that lead to subsidence. We explore the possibility that the canals that have been dug in the wetlands in coastal Louisiana have decreased marsh edge distances and therefore have contributed to subsidence.