Ice spheres seen on the Kananaskis River, AB (Canada), Feb. 24, 2012
Recently, I’ve been showing some interesting ice photos taken on the Kananaskis River. Because this mountain stream is regulated for hydro-power production, water levels vary up to 1 m (~3 ft) each day creating perched ice at low flows. Here MSc student, Stefan Emmer, got a great picture of some cool spheres of ice that formed under the perched ice this past February.
(photo by Stefan Emmer, UofA River Ice Group: Nikon CoolPix AW100, f/4.8, ISO – 640, FL 25 mm, 1/200 sec. exposure duration)