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dc.contributor.authorNowacki, Daniel J.  Concept link
dc.contributor.authorGanju, Neil K.  Concept link
dc.date.accessioned2020-02-10T19:01:57Z
dc.date.available2020-02-10T19:01:57Z
dc.date.issued2019-11-09
dc.identifier.citationNowacki, D. J., & Ganju, N. K. (2019). Simple metrics predict salt-marsh sediment fluxes. Geophysical Research Letters, 46, 12250-12257.en_US
dc.identifier.urihttps://hdl.handle.net/1912/25347
dc.description© The Author(s), 2019. This article is distributed under the terms of the Creative Commons Attribution License. The definitive version was published in Nowacki, D. J., & Ganju, N. K. Simple metrics predict salt-marsh sediment fluxes. Geophysical Research Letters, 46, (2019): 12250-12257, doi: 10.1029/2019GL083819.en_US
dc.description.abstractThe growth (or decay) of salt marshes depends on suspended‐sediment flux into and out of the marsh. Suspended‐sediment concentration (SSC) is a key element of the flux, and SSC‐based metrics reflect the long‐term sediment‐flux trajectories of a variety of salt marshes. One metric, the flood‐ebb SSC differential, correlates with area‐normalized sediment flux and can indicate salt‐marsh resilience over months to years. We hypothesize that these metrics may be relevant over shorter time periods. With data from 13 salt‐marsh channels, we show that sediment flux direction and magnitude can be inferred from SSC differential over a wide range of timescales. Furthermore, in settings characterized by a standing tidal wave, the water‐level gradient can be used instead of velocity to compute the SSC differential, enabling less‐intensive measurements that capture fundamental sediment‐flux parameters. Distilling the sediment‐flux trajectory into simple metrics improves sediment‐budget assessment, drives geomorphic model development, and clarifies field observations.en_US
dc.description.sponsorshipWe thank Jessie Lacy, Scott Ensign, and an anonymous reviewer for their critical comments. Data analyzed in this study are available via the USGS Oceanographic Time‐Series Database at https://stellwagen.er.usgs.gov. This work was supported by the USGS Coastal/Marine Hazards and Resources Program.en_US
dc.publisherAmerican Geophysical Unionen_US
dc.relation.urihttps://doi.org/10.1029/2019GL083819
dc.rightsAttribution 4.0 International*
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/*
dc.titleSimple metrics predict salt-marsh sediment fluxesen_US
dc.typeArticleen_US
dc.identifier.doi10.1029/2019GL083819


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Attribution 4.0 International
Except where otherwise noted, this item's license is described as Attribution 4.0 International