Sea Surface Time Lapse

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Here is an example of the results of the georectified time lapse photogrammetry.  This is still rough around the edges, but you can see some neat phenomena.  As in the earlier entry, the photo on the right is the original (a bit stretched), and the image on the left is the rectified, top-down version.  This is one day of images, taken once per minute.  Anything on the surface of the water is rectified correctly, but anything with height, such as tankers and buildings, will be skewed.  There are some very coherent and complex marine surface films.  It's also interesting to watch the boat traffic.  We have a really busy harbor.

There is almost a year's worth of data to analyze--that's one image per minute, every day--so I've got my work cut out for me.  We can use the movement of the surface films to infer flow velocities, and examine these under different wind and tidal regimes.

Just a quick note: marine surface films are generally not the result of spilled oil.  They are caused by oils generated by living organisms in the ocean.

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This page contains a single entry by Nick Record published on February 7, 2009 2:13 PM.

Right whales, climate change, and the press was the previous entry in this blog.

Science: minimizing interpretive variance is the next entry in this blog.

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