21 Dec '11, 7am

Underwater volcano still brewing in the Canary Islands. Here's the latest image from our EO-1 satellite.

Underwater volcano still brewing in the Canary Islands. Here's the latest image from our EO-1 satellite.

After two months of eruptions and six months of quakes and tremors, the underwater volcano off the coast of El Hierro appears to be quieting down. A mass of new crust has been building by tens to perhaps a hundred meters, but it is still nowhere near rising above the ocean surface and extending the Canary Island chain. The Advanced Land Imager (ALI) on NASA’s Earth Observing-1 (EO-1) satellite captured this natural-color image of the island and its offshore eruption on December 16, 2011. The eruption is located about one kilometer south-southwest of the town of La Restinga. The milky green swirls in the Atlantic Ocean are a volcanic brew of steaming lava fragments, bits of rock, heated gas, and other debris that are carried to the west and north by currents. Meanwhile, tremors have been occurring on the north side of the island at depths of 17 to 23 kilometers. Red circles...

Full article: http://earthobservatory.nasa.gov/IOTD/view.php?id=76717

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