Curt D. Storlazzi Kurt J. Rosenberger Joshua B. Logan Andrew W. M. Pomeroy Mark L. Buckley Jeff E. Hansen Ryan J. Lowe Olivia M. Cheriton 2023 <p><span>During a 3-month deployment on a broad, fringing reef flat in Moloka’i, Hawai’i, we observed over 28,000 wave-driven resuspension (WDR) events of coarse-grained sediment in order to identify major factors. These events were short-lived (2-11 s) and distinct from the longer-duration patterns of water-column backscatter. The wave-driven transport of WDR events was onshore, but the net cross-shore transport was ultimately controlled by water levels. Higher water levels produced larger reef-flat waves, which were requisite for these events to occur. But rising water levels also drove stronger offshore flows. Consequently, onshore net transport of WDR events only occurred within a narrow water-level range, when waves were sufficiently large, but the offshore flow was still weak. Our observations demonstrate how cross-shore transport of coarse-grained material over reef flats is sensitive to changing water levels. Rising sea levels will likely alter transport patterns, which will in turn affect cross-shore delivery of carbonate sand to adjacent shorelines.</span></p> application/pdf 10.1142/9789811275135_0149 en World Scientific Wave-scale observations of sediment resuspension and subsequent transport across a fringing reef flat text