Tonga volcano eruption disrupted satellites halfway around the world

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Tonga volcano eruption disrupted satellites halfway around the world
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The Hunga Tonga-Hunga Haʻapai volcano eruption in 2022 was so powerful that it disrupted satellites on the other side of the planet

at Nagoya University in Japan and his colleagues have now shown that it also disrupted satellite communications thousands of miles away.

GPS satellites have long been known to be vulnerable to an effect called equatorial plasma bubbles . These are areas of low pressure that form and rise like bubbles through the atmosphere. During daylight, the sun’s rays ionise the highest part of the atmosphere – a layer called the F region, 150 to 800 kilometres above Earth’s surface. This increases the density of the ionosphere, more so at the equator than elsewhere due to the intensity of the sun.

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