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Fractal Movie: Incoming Tide
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About the Fractal Movie (Artistic):
Coastline was one of the first fractals recognized in nature.
Alaskas largest city, Anchorage, is located at the end of the Cook Inlet - a long, narrow ocean channel situated between two mountain chains. Thousands of years of erosion by glaciers have filled the inlet with silt until much of it is now quite shallow. Cook Inlet opens onto the Gulf of Alaska, a region that experiences tides of up to 30 feet - some of the largest in the world. Twice a day, the portion of Cook Inlet near Anchorage completely drains and then refills. The fractal movie "Incoming Tide" looks just like Cook Inlet filling up as the tide comes in as viewed from a plane flying overhead.
About the Fractal Movie (Technical):
This movie is a portion of the Mandelbrot fractal magnified by about 16,400X. The image center, fractal kernel, and magnification are constant throughout the movie. Motion is achieved simply by increasing the value of the iteration threshold (defines the boundary between the fractals' interior and exterior regions). The green and black portions of the images (the land) are the fractals' interior regions; the blue and white portions of the images (the water) are the fractals' exterior regions. As iteration threshold increases, the fractals' interior regions retreat and the exterior regions advance, giving the illusion of movement.
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