Winter creates many unique patterns. I have to catch them now because they will disappear soon.
Some patterns are easy to explain, but others raise questions.
2) Mandelbrot set - ice - this is my attempt at an explanation
3) Koch curve - salt
4) Diffusion-limited aggregation (DLA) - salt - this is a well researched process
5) Fractal landscape - ice floes on the river
6) Fractal landscape - snow - I wonder - this looks so very much like a real archipelago landscape - maybe the erosion processes are similar in a real landscape and in snow on the sidewalk - is the water erosion process similar to the process caused by walking feet?