By Andrew Nusca
Posting in Technology
Scientists in Hawaii stumbled upon a new way to detect tsunami waves by as much as an hour in advance.
The Honolulu Star Advertiser reports that scientists at the Air Force Maui Optical and Supercomputing Station captured in photos a "glow" caused by atmospheric pressure disturbances generated by the March 11 tsunami that devastated Japan.
The problem with detecting such waves is that they move quickly -- 500 miles per hour -- without detection: on the open ocean, they're a mere inch tall.
But a team of scientists from France, Brazil and the U.S. say the waves put pressure on the atmosphere -- allowing for better detection.
Jim Borg reports:
"The atmosphere gets less and less dense as you get higher, and that allows the amplitude of the wave to grow," Jonathan Makela, a professor of electrical and computer engineering at the University of Illinois, Urbana-Champaign, said by phone Thursday.
At an altitude of 155 miles, the wave pressure interacts with the charged plasma of the ionosphere, which creates a faint red glow, Makela said.
It's nothing you can see with the naked eye, but this ionospheric "chemiluminescence" preceded the March 11 wave by about an hour -- offering hope for earlier warning of an impending destructive event.
Scientists currently rely on ocean buoys and models to track and predict the path of a tsunami. A camera in geosynchronous orbit could be the next step.
A look, in a video:
Their findings appear in the online edition of Geophysical Research Letters.
Jul 20, 2011
Well done! Thank you very much for professional templates and community edition sesli chat sesli sohbet
So 'chemiluminescence' can warn us about an hour in advance of a tsunami. No help at Fukushima. Maybe Crescent City Calif (but what could they have done with their boats). No help at Banda Aceh 2004. In that one it may have helped India and Sri Lanka and Kenya 5 hours away. Watch the skies! Look for that telltale chem....what was that.
A Haboob is much bigger and more indicative of something stormy coming soon to most people, and Haboob is so fun to say; it's a weiner! No! I'm not a NASA rocket scientist.
"Chemiluminescence" is not a real word and you are not allowed to use it in Scrabble. There are "Chemtrails" out there in the sky most days, and large waterbody wave motion can probably catch trails if you squint your eyes just so- I am not refuting the possibility of such a natural event in our biosphere to be somehow visible and measure-able, even helpful to humans that still couldn't stop all these very destructive natural disasters we are experiencing...just come up with a more convincing term for it. Really!
It gives one a real sense of how powerful natural occurrences are when a single earthquake can destroy everything close to its source, on beaches thousands of miles away and reach for the upper limits of the earths atmosphere.
"is the emission of light with limited emission of heat (luminescence), as the result of a chemical reaction." it's been in dictionaries at least back to 1991. It's how glowsticks work. it has nothing to do with contrails, or clouds, or normal wave motion. Read the article. The movement of the wave (Which is wide and very shallow in open sea) moves the air above it, the pressure increase causes a very faint glow at a certain elevation that can be seen by a satellite in space.