![]() ![]() "It's very surprising to see the electrojet be greatly reversed by something that happened on Earth's surface," said Joanne Wu, a physicist at University of California, Berkeley. ![]() The eruption caused the equatorial electrojet, which is powered by winds in the lower atmosphere, to surge five times its standard peak power and dramatically flip direction for a short time. TONGA VOLCANIC ERUPTION TRIGGERED 50-FOOT TSUNAMI WAVESĮlectric currents were also said to have been affected by the extreme winds. "Understanding space weather holistically will ultimately help us mitigate its effects on society." ![]() "These results are an exciting look at how events on Earth can affect weather in space, in addition to space weather affecting Earth," said Jim Spann, space weather lead for NASA's Heliophysics Division. Upon reaching the ionosphere and the edge of space, ICON clocked the windspeeds at up to 450 mph – making them the strongest winds below 120 miles altitude measured by the mission since its launch. As the winds expanded upwards into thinner atmospheric layers, they moved faster. NASA says that the eruption created significant pressure disturbances in the atmosphere, leading to strong winds. (NASA Earth Observatory image by Joshua Stevens using GOES imagery courtesy of NOAA and NESDIS) Crescent-shaped bow shock waves and numerous lighting strikes are also visible. The GOES-17 satellite captured images of an umbrella cloud generated by the underwater eruption of the Hunga Tonga-Hunga Ha’apai volcano on Jan. ![]()
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