On March 13th 2013, we went again to Barreta Island to undertake a topographic survey. We were predicting overwash on Barreta because on March 7th, during the morning high-tide, there were waves exceeding 3 m.
Our observations point to the occurrence of overwash even during the high-tide of the nigth before the survey. We could still see the difference between wet sand (from overwash) and dry sand on top of the barrier.
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| Overwash intrusion can be identified by the difference between wet and dry sand. |
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| Overwash maximum intrusion can be identified by the difference between wet and dry sand, and also by some debris at the edge. |
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On this site, only a subtle change is noticed from a distance, but looking closely a centimetre difference in elevation corresponds to a thin layers of overwash deposition, which masks the overwash intrusion.
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| Often, we use this wook trunk for reference and location. |
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| Getting in and out of the cold water was tough. |
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| We do allow people to enter the barrier island, in spite of the signs... |
