Caladesi Island




View of the Island from the air. Numbers in red are referred to in captions below.

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05/23/2003 13:13
Red mangroves in the northern part of Caladesi Island.
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05/23/2003 13:27
Looking south along the central part of Caladesi Island (1 in air photo) showing prograding part of the island
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05/23/2003 13:40
Looking south a ~100m north of the former Dunedin Pass (2 in air photo). Older beach ridges / dune ridges are presently eroded.
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05/23/2003 13:42
Detail of eroding beach / dune ridge showing layer of darker phosphate rich sand. The heavy mineral sand may indicate stronger winds, assuming the feature is a dune ridge.
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05/23/2003 13:56
Landward side of the former Dunedin Pass.
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05/26/2003 14:29
Coring into the sediment that has closed Dunedin Pass.
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05/23/2003 14:02
Top section of the core showing the colourisation due to the cyano bacteria in the alagal mats (note the top greenish layer which is underlain by a slightly red-tinted layer.
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05/23/2003 14:06
Section through the overwash deposit in the former Dunedin Pass showing previous algal mat layers (dark).
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05/23/2003 14:08
Landward side of the former Dunedin Pass showing the change in densety of mangrove seedlings in relation to changing water depth / water cover.
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05/23/2003 14:11
Detail of 'bubble sand' (on the right hand side of photo), a typical overwash deposit where due to the turbulent flow regime sediment, water and air are mixed and on deposition air bubbles can be trapped in the sediment and prevail over several months.
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05/23/2003 14:15
Detail of mangrove seedlings.
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05/23/2003 14:24
Back barrier mangrove swamp.
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05/23/2003 14:25
Back barrier mangrove swamp showing mangrove roots.
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05/23/2003 14:25
Back barrier mangrove swamp showing mangrove roots.
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05/23/2003 14:26
Back barrier mangrove swamp.
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05/23/2003 14:29
Detail of a horseshoe crab remains found on the beach.
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05/26/2003 14:30
More detailed view of the eroding beach / dune ridge showing layers of darker phosphate rich sand. The heavy mineral sand may indicate stronger winds, assuming the feature is a dune ridge. The lateral consistency of the layers may on the other hand argue for them to be eroding beach ridges.
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05/26/2003 14:30
The eroding beach / dune ridge in the back ground with heavy mineral sand deposition on the beach in the foreground.
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05/23/2003 15:22
Detail of a small section through the storm berm showing distribution of heavy mineral rich layers (coin for scale).
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05/23/2003 15:28
Mangrove shoot on the beach face, looing for a place to stay. Note the colour pattern due to different amounts of the heavy minerals in the sand.
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05/23/2003 16:27
Cross shore orientated runnels through the storm illustrate overtopping of the berm during high wave conditions the preceeding days. These runnels were spaced a few tens of metres (the next one is where the 3 people are). View is agains the bluff slope of the runnels (looking south).
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05/23/2003 16:43
View north towards the nothern tip of Caladesi Island showing a line of trees (mangroves) being eroded obliquely. This evidence for a former back barrier now being eroded at the front of the barrier.
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05/23/2003 16:46
Detail of view north towards the nothern tip of Caladesi Island showing a line of trees (mangroves) being eroded obliquely. Tree stumps can be seen on shore face.
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05/23/2003 16:48
View of the mangrove peat that is presently eroded with line of back barrier vegetation.
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05/23/2003 16:48
Detailed view of the mangrove peat that is presently eroded with line of back barrier vegetation.
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05/23/2003 16:57
Detail of the mangrove peat. The reddish mangrove wood can still be seen in this peat sample.
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05/23/2003 17:29
Outflow through the storm berm showing overview situation for the nexts photos.
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05/26/2003 14:32
Close-up of the bubble sand layers-
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05/26/2003 14:32
Detail of overwash deposit in the bluff section of the overflow channel Showing two bulle sand layers
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05/23/2003 17:38
View south along from the nothern end of Caladesi Island showing the line of mangroves and the mangrove peat.



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