Show simple item record

dc.contributor.authorWarner, John C.  Concept link
dc.contributor.authorArmstrong, Brandy  Concept link
dc.contributor.authorSylvester, Charlene S.  Concept link
dc.contributor.authorVoulgaris, George  Concept link
dc.contributor.authorNelson, Timothy R.  Concept link
dc.contributor.authorSchwab, William C.  Concept link
dc.contributor.authorDenny, Jane F.  Concept link
dc.date.accessioned2012-08-07T18:27:09Z
dc.date.available2012-08-07T18:27:09Z
dc.date.issued2012-05-10
dc.identifier.citationContinental Shelf Research 42 (2012): 51–63en_US
dc.identifier.urihttp://hdl.handle.net/1912/5299
dc.descriptionThis paper is not subject to U.S. copyright. The definitive version was published in Continental Shelf Research 42 (2012): 51–63, doi:10.1016/j.csr.2012.05.001.en_US
dc.description.abstractLong Bay is a sediment-starved, arcuate embayment located along the US East Coast connecting both South and North Carolina. In this region the rates and pathways of sediment transport are important because they determine the availability of sediments for beach nourishment, seafloor habitat, and navigation. The impact of storms on sediment transport magnitude and direction were investigated during the period October 2003–April 2004 using bottom mounted flow meters, acoustic backscatter sensors and rotary sonars deployed at eight sites offshore of Myrtle Beach, SC, to measure currents, water levels, surface waves, salinity, temperature, suspended sediment concentrations, and bedform morphology. Measurements identify that sediment mobility is caused by waves and wind driven currents from three predominant types of storm patterns that pass through this region: (1) cold fronts, (2) warm fronts and (3) low-pressure storms. The passage of a cold front is accompanied by a rapid change in wind direction from primarily northeastward to southwestward. The passage of a warm front is accompanied by an opposite change in wind direction from mainly southwestward to northeastward. Low-pressure systems passing offshore are accompanied by a change in wind direction from southwestward to southeastward as the offshore storm moves from south to north. During the passage of cold fronts more sediment is transported when winds are northeastward and directed onshore than when the winds are directed offshore, creating a net sediment flux to the north–east. Likewise, even though the warm front has an opposite wind pattern, net sediment flux is typically to the north–east due to the larger fetch when the winds are northeastward and directed onshore. During the passage of low-pressure systems strong winds, waves, and currents to the south are sustained creating a net sediment flux southwestward. During the 3-month deployment a total of 8 cold fronts, 10 warm fronts, and 10 low-pressure systems drove a net sediment flux southwestward. Analysis of a 12-year data record from a local buoy shows an average of 41 cold fronts, 32 warm fronts, and 26 low-pressure systems per year. The culmination of these events would yield a cumulative net inner-continental shelf transport to the south–west, a trend that is further verified by sediment textural analysis and bedform morphology on the inner-continental shelf.en_US
dc.description.sponsorshipThis research was funded by the South Carolina Coastal Erosion Project(http://pubs.usgs.gov/fs/2005/3041/), a cooperative study supported by the US Geological Survey and the South Carolina Sea Grant Consortium(Sea Grant Project no:R/CP-11).en_US
dc.format.mimetypeapplication/pdf
dc.language.isoen_USen_US
dc.publisherElsevier B.V.en_US
dc.relation.urihttps://doi.org/10.1016/j.csr.2012.05.001
dc.subjectSediment transporten_US
dc.subjectLong Bayen_US
dc.subjectSouth Carolinaen_US
dc.subjectStorm frontsen_US
dc.titleStorm-induced inner-continental shelf circulation and sediment transport : Long Bay, South Carolinaen_US
dc.typeArticleen_US
dc.identifier.doi10.1016/j.csr.2012.05.001


Files in this item

Thumbnail

This item appears in the following Collection(s)

Show simple item record