Observations and a linear model of water level in an interconnected inlet-bay system

dc.contributor.author Aretxabaleta, Alfredo L.
dc.contributor.author Ganju, Neil K.
dc.contributor.author Butman, Bradford
dc.contributor.author Signell, Richard P.
dc.date.accessioned 2017-07-05T17:13:37Z
dc.date.available 2017-07-05T17:13:37Z
dc.date.issued 2017-04-04
dc.description © The Author(s), 2017. This article is distributed under the terms of the Creative Commons Attribution License. The definitive version was published in Journal of Geophysical Research: Oceans 122 (2017): 2760–2780, doi:10.1002/2016JC012318. en_US
dc.description.abstract A system of barrier islands and back-barrier bays occurs along southern Long Island, New York, and in many coastal areas worldwide. Characterizing the bay physical response to water level fluctuations is needed to understand flooding during extreme events and evaluate their relation to geomorphological changes. Offshore sea level is one of the main drivers of water level fluctuations in semienclosed back-barrier bays. We analyzed observed water levels (October 2007 to November 2015) and developed analytical models to better understand bay water level along southern Long Island. An increase (∼0.02 m change in 0.17 m amplitude) in the dominant M2 tidal amplitude (containing the largest fraction of the variability) was observed in Great South Bay during mid-2014. The observed changes in both tidal amplitude and bay water level transfer from offshore were related to the dredging of nearby inlets and possibly the changing size of a breach across Fire Island caused by Hurricane Sandy (after December 2012). The bay response was independent of the magnitude of the fluctuations (e.g., storms) at a specific frequency. An analytical model that incorporates bay and inlet dimensions reproduced the observed transfer function in Great South Bay and surrounding areas. The model predicts the transfer function in Moriches and Shinnecock bays where long-term observations were not available. The model is a simplified tool to investigate changes in bay water level and enables the evaluation of future conditions and alternative geomorphological settings. en_US
dc.description.sponsorship New York State Department of Environmental Conservation Grant Number: (NYS-DEC); U.S. Geological Survey (USGS) en_US
dc.identifier.citation Journal of Geophysical Research: Oceans 122 (2017): 2760–2780 en_US
dc.identifier.doi 10.1002/2016JC012318
dc.identifier.uri https://hdl.handle.net/1912/9060
dc.language.iso en_US en_US
dc.publisher John Wiley & Sons en_US
dc.relation.uri https://doi.org/10.1002/2016JC012318
dc.rights Attribution-NonCommercial-NoDerivatives 4.0 International *
dc.rights.uri http://creativecommons.org/licenses/by-nc-nd/4.0/ *
dc.subject Water level en_US
dc.subject Back-barrier bays en_US
dc.subject Tidal variations en_US
dc.subject Storm effects en_US
dc.subject Dredging en_US
dc.subject Long Island en_US
dc.title Observations and a linear model of water level in an interconnected inlet-bay system en_US
dc.type Article en_US
dspace.entity.type Publication
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relation.isAuthorOfPublication.latestForDiscovery d03da8a1-fda9-4c43-9f75-2996190a8483
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