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New satellite image have revealed a arresting pattern of concentric swarm ring , resembling a bull’s - oculus , that was formed by the continued eruption of thevolcanoon La Palma in Spain ’s Canary Islands .
The La Cumbre Vieja volcano , meaning " The Old Summit " in Spanish , has been erupting since Sept. 19 for the first time in more than 50 years , Live Science previously reported . The eruption has ram G of locals to evacuate as massive lava menses , which werevisible from space , burned through farmland , roads and houses on the southwestern part of the island .
A satellite image of the concentric cloud rings above La Palma created by its erupting volcano.
Now , orbiter images captured Oct. 1 by the Moderate Resolution Imaging Spectroradiometer ( MODIS ) onboardNASA ’s Aqua satellite show a curious bull’s - centre - shapedcloudformation above La Palma . Together , the volcano ’s eruption plume — a concoction of ash , fume , piss vapour and other volcanic gases — and a rarified atmospheric perturbation conduct to the rotary pattern , allot toNASA ’s Earth Observatory .
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Normally , a volcano ’s extravasation plume rises straight up into the stratosphere — the 2d layer of the ambiance , which continue from about 4 to 12 miles ( 6 to 19 kilometer ) above Earth ’s airfoil to 31 international nautical mile ( 50 kilometer ) — form a towering column of swarm and ash . This happens because hot line and gases rise above cold ones and the atmospherical strain temperature diminish with altitude , creating a kind of inconspicuous elevator that the feather can ride up .
However , a uncommon phenomenon hump as a temperature inversion meant that a temporary elevated layer of hot aura roleplay like a chapeau , pin down the vent ’s plume in the troposphere — the first layer of the atmosphere right above Earth ’s open — at an altitude of 3.3 miles ( 5.3 kilometre ) . That lidforced the plume outwards horizontally , according to the Earth Observatory . The immobilize feather ended up create concentric gang because of the innate ebbing and flows in the intensity of volcanic activity , which created a variety of pulse in the emissions given off by the volcano .
This unequalled process was also caught on camera by the Izaña Atmospheric Research Center , based on Tenerife ( another Canary Island ) , and can be see in a mesmerizingtime - lapse videoshared on Twitter .
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The official name for this type of concentric cloud formation is a gravity moving ridge , according to theNational Weather Service . However , the formation has nothing to do withgravityand is completely freestanding from the ripples inspace - timecalled gravitational waves .
Though expert initially thought the eruption would last only a few day , La Cumbre Vieja continues to throw up lava and gases .
Originally published on Live Science .
