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Iowa Physicists Discover A New Type Of Aurora

Published May 14, 2021 at 3:52 PM CDT
Listen • 45:54
On this edition of
River to River, host Ben Kieffer talks with Kathie Obradovich, editor in chief of the Iowa Capitol Dispatch about the latest work in the Iowa Legislature and the reverberations of national politics in the state.
Sybil Soukup, executive director for the Human Society of Northern Iowa joins the program to talk about how the Humane Society of the United States ranked Iowa as the state with the third-highest number of puppy mills with 11 noted locations in filthy, hazardous condition.
The annual Horrible Hundred report lists dog breeders that fail to provide adequate care to dogs and puppies, based on state and federal inspections, complaints from the public and undercover investigations. Missouri had the largest number of businesses on the Horrible Hundred list at 21, followed by Ohio with 16, and Iowa at 11. ....

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New type of aurora revealed in 19-year-old video | Earth

May 13, 2021
Scientists call it a “diffuse auroral eraser.” That’s because this newly named aurora first appears as a bright stripe over a diffuse auroral background. Then, when it disappears, it scrubs out the faint auroral light behind it.
Scientists at the University of Iowa said on May 6, 2021, that they’ve given the name
diffuse auroral eraser to a new type of aurora not often seen and not well understood. This new and elusive type of aurora – noticed in a 19-year-old video made by a physicist – has never before been described in scientific literature. The new name
diffuse auroral eraser describes how this sort of aurora first appears as a brighter stripe within a fainter, more diffuse aurora. When the stripe disappears, it blots out the diffuse light from the background aurora, as though the aurora is erased from that specific patch of sky. Then, after about 20 seconds, the diffuse background aurora reappears. ....

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'Diffuse erasers': New type of aurora described by physicists -- Science & Technology -- Sott.net

The researchers say the behavior, which they call diffuse auroral erasers,
has never been mentioned in the
scientific literature. The findings appear in the
Journal of Geophysical Research Space Physics.
Auroras occur when charged particles flowing from the sun called the solar wind interact with Earth s protective magnetic bubble. Some of those particles escape and fall toward our planet, and the energy released during their collisions with gases in Earth s atmosphere generate the light associated with auroras.
The biggest thing about these erasers that we didn t know before but know now is that they exist, says Allison Jaynes, assistant professor in the Department of Physics and Astronomy at Iowa and study co-author. It raises the question: Are these a common phenomenon that has been overlooked, or are they rare? ....

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Physicists describe new type of aurora

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VIDEO: The famed northern and southern lights have been studied for millennia, but they still hold secrets. In a new study, physicists led by the University of Iowa describe a new.
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Credit: Riley Troyer, University of Iowa
For millennia, humans in the high latitudes have been enthralled by auroras the northern and southern lights. Yet even after all that time, it appears the ethereal, dancing ribbons of light above Earth still hold some secrets.
In a new study, physicists led by the University of Iowa report a new feature to Earth s atmospheric light show. Examining video taken nearly two decades ago, the researchers describe multiple instances where a section of the diffuse aurora the faint, background-like glow accompanying the more vivid light commonly associated with auroras goes dark, as if scrubbed by a giant blotter. Then, after a short period of time, the blacked-out section suddenly reappears. ....

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Environmental News Network - Physicists Describe New Type of Aurora

Environmental News Network - Physicists Describe New Type of Aurora
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