Effect of tidal range on longshore current variation with respect to cross-shore location of a barred beach. Issue 2 (2nd April 2020)

• Record Type: Journal Article
• Authors: Suzuki, Takayuki; Sakihama, Shuhei; Cox, Daniel T.
• Is Part Of: Coastal engineering journal. Volume 62:Issue 2(2020)
• Page Start: 217
• Page End: 235
• Publication Date: 2020-04-02
• Subjects: Field observation -- spring and neap tides -- h-ADCP -- cross-shore distributions; Coastal engineering -- Periodicals; Coasts -- Periodicals; Hydraulic engineering -- Periodicals; Coast changes -- Periodicals; Shore protection -- Periodicals; Coast changes; Coastal engineering; Coasts; Hydraulic engineering; Shore protection; Periodicals; 627.58
• DOI: 10.1080/21664250.2020.1738987
• Languages: English
• ISSNs: 2166-4250

Abstract

ABSTRACT: Longshore and cross-shore currents in the surf zone were observed on a dissipative barred beach for 20 days using a horizontally mounted acoustic-Doppler current profiler (H-ADCP). This novel deployment strategy allowed for the synoptic measurement of the longshore current at approximately mid-depth at several cross-shore locations. The longshore current data were analyzed with wave and tide level data to show the effect of tidal range on the variation of the longshore current with respect to cross-shore location. The longshore current was higher near the outer bar area than that observed near the inner bar. Moreover, the current became higher during the low tide and lower during the high tide. A longshore current model was proposed using the spring and neap tide data sets and then applied to the remaining observation period during large events of incident wave energy flux. The model with the relative water level luded provided sufficient accuracy to account for the tide effects.