12/27/2023 0 Comments Scary space phenomena![]() Nature then tries to restore the fluid changes within the atmosphere, which present in a visible oscillating pattern within the cloud.(Photo by: NASA) The upward momentum of the draft triggers into the air pocket causes changes in the atmosphere, altering the fluid dynamics. A wave pattern will only be generated when the updraft air is forced into a stable air pocket. The undulating pattern of a Gravity Wave is caused by air displaced in the vertical plain, usually as a result of updrafts coming off the mountains or during thunderstorms. These ice circles have been seen with diameters of over 500 feet and can also at times be found in clusters and groups at different sizes. Very slowly the edges are ground down until a gap is formed between the eddy and the surrounding ice. A slow moving river current can create a slow turning eddy, which rotates, forming an ice disc. They can be as high as 30 to 200 ft tall and up to 10 ft wide but only last a few minutes, although some can last for longer if the winds are strong.Ī rare phenomenon usually only seen in extremely cold countries, scientists generally accept that Ice Circles are formed when surface ice gathers in the center of a body of water rather than the edges. Vertical rotating columns of fire form when the air currents and temperature are just right, creating a tornado-like effect. Fire whirls often occur during bush fires. (photo by Mark Humpage)Ī fire whirl, also known as fire devil or fire tornado, is a rare phenomenon in which a fire, under certain conditions –depending on air temperature and currents–, acquires a vertical vorticity and forms a whirl, or a tornado-like effect of a vertically oriented rotating column of air. Supercells are often carriers of giant hailstones and although they can occur anywhere in the world they’re most frequent in the Great Plains of the US. They can spout huge amounts of hail, rain and wind and are often responsible for tornados, though they can also occur without tornados. They are usually isolated storms, which can last for hours, and sometimes can split in two, with one storm going to the left of the wind and one to the right. ![]() Supercell is the name given to a continuously rotating updraft deep within a severe thunderstorm (a mesocyclone) and looks downright scary. Moreover, the physics calculations do not fully support this theory as wind speeds of hundreds of miles per hour would be needed to move some of the stones. ![]() However, this theory does not explain evidence of different rocks starting side by side and moving at different rates and in disparate directions. Some scientists have proposed that a combination of strong winds and surface ice account for these movements. Rocks weighing up to hundreds of pounds have been known to move up to hundreds of yards at a time. The mysterious moving stones of the packed-mud desert of Death Valley have been a center of scientific controversy for decades. As this accelerates, deep troughs are formed, leaving peaks of ice standing between them. Once such a dimple is formed, sunlight can be reflected within the dimple, increasing the localized sublimation. Initially, the sun’s rays cause random dimples on the surface of the snow. These amazing ice spikes, generally known as penitentes due to their resemblance to processions of white-hooded monks, can be found on mountain glaciers and vary in size dramatically: from a few centimetres to 5 metres in height. While they can be fatal, the constituent phytoplankton in ride tides are not harmful in small numbers. ![]() In some cases, even humans have been harmed by red tides though no human exposure are known to have been fatal. While some of these can be relatively harmless, others can be harbingers of deadly toxins that cause the deaths of fish, birds and marine mammals. This phenomena is caused by high levels of phytoplankton accumulating to form dense, visible clouds near the surface of the water. More correctly known as an algal bloom, the so-called Red tide is a natural event in which estuarine, marine, or fresh water algae accumulate rapidly in the water column and can convert entire areas of an ocean or beach into a blood red color. ![]()
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