Organic matter composition and inorganic nitrogen response to Hurricane Harvey's negative storm surge in Corpus Christi Bay, Texas

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dc.contributor.authorDouglas, Audrey
dc.contributor.authorMurgulet, Dorina
dc.contributor.authorGreige, Megan
dc.contributor.authorDas, Kousik
dc.contributor.authorFelix, J. David
dc.contributor.authorAbdulla, Hussain A.
dc.creator.orcidhttps://orcid.org/0000-0003-4063-9960en_US
dc.creator.orcidhttps://orcid.org/0000-0002-7914-2276en_US
dc.creator.orcidhttps://orcid.org/0000-0001-5849-7214en_US
dc.creator.orcidhttps://orcid.org/0000-0002-2143-0291en_US
dc.creator.orcidhttps://orcid.org/0000-0003-4063-9960
dc.creator.orcidhttps://orcid.org/0000-0002-7914-2276
dc.creator.orcidhttps://orcid.org/0000-0001-5849-7214
dc.creator.orcidhttps://orcid.org/0000-0002-2143-0291
dc.date.accessioned2022-10-07T16:44:23Z
dc.date.available2022-10-07T16:44:23Z
dc.date.issued2022-09-08
dc.description.abstractExtreme weather events, such as tropical storms and hurricanes, are known to deliver large amounts of freshwater (surface runoff) and associated inorganic and organic nutrients to estuaries and the coastal ocean, affecting water quality and nutrient budgets. However, while Hurricane Harvey produced an unprecedented 1,000-year flood event in 2017 that inundated areas north of the landfall, like the Houston/Galveston region (Texas, United States), the impact on the Corpus Christi area, south of the landfall, was an intermittent negative surge (∼0.5 m below mean sea level (MSL)), caused by the southerly direction of winds and limited freshwater inflows. With the use of pre- and post-landfall surface-water, porewater, and groundwater nutrient measurements and dissolved organic matter (DOM) molecular characterization analyses, this study assessed the influence of negative storm surge on groundwater–surface water interactions and nutrient composition. Within 2 weeks following the first landfall, the forms and inputs of inorganic and organic nutrients fluctuated significantly nearshore Corpus Christi Bay. Sudden drops in sea level were correlated with pulses of NH4 + and disproportionately more dissolved organic carbon (DOC) than dissolved organic nitrogen (DON), likely from a carbon-rich groundwater or benthic source with slightly lower labile characteristics. Recovery to MSL drove higher proportions of nitrogenous DOM and lower dissolved inorganic nitrogen (DIN) inputs. An increased presence of sulfurized DOM derived from anaerobic microbial processing of organic matter mineralization in marine sediments post-landfall was facilitated by enhanced groundwater inputs and flushing of porewater due to considerable drops in sea level and steepening hydraulic gradients toward the coast. The induced pulses of higher groundwater advective fluxes are also hypothesized to have intermittently enhanced flushing of anoxic DIN and biodegraded DOM from porewater and groundwater and suggested that dynamic hurricane-induced negative surge events affect net nutrient budgets in estuarine and coastal seas.en_US
dc.description.sponsorshipThe Center for Water Supply Studies at Texas A & M University-Corpus Christi (TAMU-CC) financially supported this research. Funds for open access publication fees were received from the TAMU-CC library.en_US
dc.identifier.citationDouglas AR, Murgulet D, Greige M, Das K, Felix JD and Abdulla HA (2022) Organic matter composition and inorganic nitrogen response to Hurricane Harvey’s negative storm surge in Corpus Christi Bay, Texas. Front. Mar. Sci. 9:961206. doi: 10.3389/fmars.2022.961206en_US
dc.identifier.doihttps://doi.org/10.3389/fmars.2022.961206
dc.identifier.urihttps://hdl.handle.net/1969.6/94069
dc.language.isoen_USen_US
dc.rightsAttribution 4.0 International*
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/*
dc.subjectextreme eventen_US
dc.subjecthydrologic changesen_US
dc.subjectnitrogen sourcesen_US
dc.subjectestuarine chemistryen_US
dc.subjectorbitrap-msen_US
dc.subjectgroundwater-surface water interactionsen_US
dc.titleOrganic matter composition and inorganic nitrogen response to Hurricane Harvey's negative storm surge in Corpus Christi Bay, Texasen_US
dc.typeArticleen_US

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