Frazil ice is a collection of loose, randomly oriented ice crystals a millimeter and sub-millimeter in size, with various shapes, e.g., elliptical disks, dendrites, needles and of an irregular nature.

2023年12月23日 · Frazil ice is a cold-weather phenomenon. It takes an area of water, a clear and cold night and then some wind to create water turbulence. It can form in rivers, lakes, reservoirs and oceans.

2022年3月10日 · At Yosemite National Park, located east of San Francisco, California, the unique phenomenon known as frazil ice proves itself just as perilous, though its unusual nature ironically makes it something of a tourist attraction, too.

2021年9月1日 · Frazil ice typically consists of individual sub-mm to mm-sized particles that may appear like a coarse slush as it is sieved out of the water (Fig. 1), or, under careful observation, most commmonly in the form of disks, but also as needles, hexagons and a …

2018年1月25日 · This is frazil ice, which forms when mist (for example, from a waterfall) freezes, then floats down the creek. When can I see Frazil Ice? Frazil ice can occur in fall, winter, or spring, as long as there is relatively high flow over waterfalls and Yosemite Valley has overnight lows below freezing.

Frazil ice is a "slushy ice" that forms on lakes or slow-moving rivers. Many times, it looks like needles, roughly 3 millimeters in diameter floating on the surface.

2020年12月9日 · What is Frazil Ice? The frozen phenomenon of frazil ice happens when ice crystals collect in supercooled, turbulent water. In Yosemite National Park, it’s also a byproduct of frozen waterfall mist that reaches places like the Merced River.

2025年1月8日 · Frazil ice is a fascinating and unique form of ice that forms in very cold conditions. It is created when water becomes supercooled, leading to the development of loose, small ice crystals that can resemble slush or snow.

2014年12月15日 · What the Heck is Frazil Ice? This cold-weather phenomenon requires a particular set of variables: a clear night, a slight offshore wind and plunging temperatures. Learn why it can mean disaster for water system intakes.

2020年3月14日 · Also called “slush ice” (and by some natives around here “anchor ice”), frazil is the white stuff that forms the brilliant white canyons in the river you used to see from The Glen bridge in early spring.