Thursday, 18 April 2013

Variable overwash intrusion

Just after the Carnival holidays, on February 13th, we made another topographic survey on Barreta Island. This time we expect to measure overwash related to a high tide level due to the equinoctial spring tides.
Overwash intrusion was relatively small at west:

Overwash of the barrier berm, but not of the barrier crest.

Overwash intrusion was longer at East:
Overwash of the barrier until the vegetation on the backbarrier.

The low-tide terrace has significant alongshore variations, even in areas that are not connected to the Ancão Inlet ebb delta.

Low-tide terrace in two sites of the study area, Eastwards of the Ancão ebb delta.

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