When I was an undergrad (back in 2008), I ventured down to the Wakulla County in the pan handle of Florida to help out a professor with some field work in coastal wetlands. I slugged around in knee to waist deep mud, laying sediment traps and using a hand-held strain gauge to measure the mud's cohesion. The wetlands are separated from the ocean by sandy banks, only connected by small coastal streams that flow in or out, depending on the tide. Though we were there for the mud, I was most intrigued by the patterns in the sand.
Above, a clump of grass at the mercy of changing winds traces out concentric circles. Below, soft arcs are swept on top of faint ripple-marks.
Below, recent high-water marks are recorded by horizontal layering.
We were down in Florida several months after Katrina and the storm's impact was obvious. Below is a section of the road that was washed out during the storm, opening a new inlet to the wetlands.
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