Wave transformation over a barrier reef

Barrier reefs act as depth-dependent filters for incoming wave energy, significantly reducing its transmission while allowing certain low-frequency standing waves to persist. This finding emerges from a two-month observational and numerical study conducted over the Ouano reef barrier in New Caledonia, which revealed distinct wave patterns, including reflection-induced standing waves and undular bore trains developing over the reef flat. The research combined cross-shore pressure sensor networks with high-resolution velocity profiling to quantify these phenomena, offering critical insights into how barrier reefs modulate wave dynamics—a key factor for coastal protection and lagoon ecosystem stability.

Sous, D., Tissier, M., Rey, V., Touboul, J., Bouchette, F., Devenon, J.-L., Chevalier, C., & Aucan, J. (2019). Wave transformation over a barrier reef. Continental Shelf Research, 184, 66–80. https://doi.org/10.1016/j.csr.2019.07.010