How a barrier beach or barrier island forms

Описание: This short video illustrates the dynamic evolution of coastal landscapes under the influence of waves and storm surges. The sequence begins with energetic waves striking the shoreline, followed by a storm surge or sea-level rise that erodes the dune system. As the sea level recedes and wave energy diminishes, the abundance of sediment released during dune erosion becomes the driving force behind a remarkable transformation: onshore sand transport builds a barrier beach (or barrier island), enclosing a lagoon behind it.