Lightning
by Emil Ivanov
When lightning strikes: Photographer’s Bay Bridge image goes viral
San Fransisco shutterbug says he has no idea how the photo of lightning striking the Bay Bridge went viral so quickly.
In this map, created using NASA satellite data, you can see in lurid detail where lightning struck Earth the most between 1995-2002. This historical information can give scientists clues about where it’s likely to strike again. And with tornado, monsoon, and hurricane seasons getting underway, you too might want to know where these ultra-hot bolts of electricity will slam out of the clouds. Here are some of the most up-to-date lightning maps.
NASA also has a map of lightning strikes that’s regularly updated, showing lightning strikes from 1998 to the present. The more up-to-date map is very similar to what you see above, except that it shows more intense activity in Argentina and South Africa.
Also, according to NASA, the greatest amount of lightning strikes are near the Catatumbo River in Venezuela (where there are 40,000 strikes every night, for most of the year), and a mountain town called Kifuka in the Democratic Republic of the Congo. You can see the dark regions signaling thousands of lightning strikes over these areas in the map above.
Over at the University of Washington in Seattle, Earth scientist Robert Holzworth is running an ongoing project to collect lighting strike data all over the globe. Using sensors all over the world, Holzworth and his colleagues analyze very low frequency (VLF) waves in the radio spectrum emitted by lightning. He creates maps and animated gifs showing the distribution of lightning in various areas, revealing where lightning is striking the most over time.
The upshot? Warmer areas over land tend to attract the most lightning. And the patterns seem to be quite predictable, so it’s fairly easy to plan trips to avoid areas where you might incur the wrath of Zeus. Of course, as the climate warms up over the next century, these maps may reveal a very different set of patterns.
Using an experimental apparatus reminiscent of a classic Frankenstein movie, French researchers have coaxed laboratory-generated lightning into striking the same place, not just twice, but over and over. This feat of electrical reorientation used femtosecond (one quadrillionth of a second) pulses of laser light to create a virtual lightning rod out of a column of ionized gas. This is the first time that these laser-induced atmospheric filaments were able to redirect an electrical discharge away from its intended target and guide it to a normally less-attractive electrode.
Turns out, lightning can strike the same spot twice (and many, many more times)!
Damn Nature U Awesome of the Day: Photographer Matt Titmanis captured this stunning shot of nature putting a man-made light show to shame during Australia Day celebrations in Perth.
[thanks matt!]
cwnl:
Lightning Dome
by Muhammad Rayhan
The Dark Lord (by skarpi)
Electric Purple Crayons (by Mike Berenson - Colorado Captures)
The first of 3 photos by Olivier Vandeginste, taken 10 km east of Hvolsvollur at a distance 25 km from the Eyjafjallajokull craters on April 18th, 2010. Lightning and motion-blurred ash appear in this 15-second exposure. (© Olivier Vandeginste) #
Summer Lightning
The Pawnee National Grasslands in Colorado is an exceptional place both to observe nature and to stargaze. Observers have a nearly unobstructed view of the horizon. During the summer months, lightning can be seen miles away, and the night sky is generally free of annoying light pollution.
By Robert Arn
Lightning Strike & The Eiffel
Fire In The Sky
This is an image sequence containing 70 lightning shots, taken at Ikaria island during a severe thunderstorm that took place the night of the total lunar eclipse at June 15, 2011.
Credit: Chris Kotsiopoulos
(via raymondradioactive)