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July 15, 2019 11:34 am
Original Link: http://rss.slashdot.org/~r/Slashdot/slashdot/~3/28UTnYghxlI/a-cell-tower-in-the-swiss-alps-is-struck-by-lightning-more-than-100-times-a-year
A Cell Tower In the Swiss Alps Is Struck By Lightning More Than 100 Times a Year
Wave723 quotes IEEE Spectrum: Atop a rocky peak in the Swiss Alps sits a telecommunications tower that gets struck by lightning more than 100 times a year, making it perhaps the world's most frequently struck object. Taking note of the remarkable consistency with which lightning hits this 124-meter structure, researchers have adorned it with instruments for a front-row view of these violent electric discharges... To anyone who has witnessed a lightning strike, everything seems to happen all at once. But [New Mexico Tech's Mark] Stanley's sensor captures several gigabytes of data about the many separate pulses that occur within each flash. Those data can be made into a video that replays, microsecond by microsecond, how "channels" of lightning form in the clouds.... [T]hey intend to use data gathered by the tower's many instruments (which include a collection of six antennas called a lightning mapping array, two Rogowski coils to measure current, two B-Dot sensors to measure the current time-derivative, broadband electric and magnetic field sensors, and a high-speed camera) to reconstruct the total path of strikes soon after they happen, tracing the electromagnetic radiation all the way back to its original source... The Santis team's work has held particular relevance for wind farm operators. That's because most strikes recorded at the tower are examples of upward lightning -- which travels from ground-to-cloud instead of cloud-to-ground. They hope to eventually help make progress on predicting where lightning will strike. And by the end of this year, the team at the tower expect to record their 1,000th lightning strike.Read more of this story at Slashdot.
Original Link: http://rss.slashdot.org/~r/Slashdot/slashdot/~3/28UTnYghxlI/a-cell-tower-in-the-swiss-alps-is-struck-by-lightning-more-than-100-times-a-year
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