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- W3135718099 abstract "Nearshore bars are meso-scale sedimentary features formed in the nearshore and intertidal zone of shoaling and breaking waves. They are composed primarily of sand; however, small quantities of both gravel and silt are often present, primarily in the deeper water of the trough that forms landward of the bar. They are 0.25–4 m high, 25–150 m wide and 50 m to several kilometers long. Most bars form parallel to the coast and have a gently sloping stoss slope, rounded crest and a steeper lee slope that may approach the angle of repose. Bar shape can vary from straight to crescentic. The most accepted models of bar formation involve the convergence of onshore sand transport under shoaling and breaking waves with offshore transport by undertow near the bed. Bars migrate offshore during storms accompanied by strong onshore winds. Onshore bar migration occurs under swell waves during periods between storms and may lead to welding of the bar(s) with the beach if the period between storms is sufficiently long. In the last three decades continuous monitoring of the position of the bar crest using video cameras installed on high points overlooking the coast have provided a wealth of detail on the stability and migration of bar systems on a wide range of sandy coasts." @default.
- W3135718099 created "2021-03-15" @default.
- W3135718099 creator A5055024324 @default.
- W3135718099 date "2021-01-01" @default.
- W3135718099 modified "2023-09-26" @default.
- W3135718099 title "Morphodynamic Systems | Nearshore Bars" @default.
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