Showing posts with label eruption. Show all posts
Showing posts with label eruption. Show all posts

Saturday, September 8, 2007

An Island Is Born and Dies in the South Pacific

Swedish sailor Fredrick Franson first came upon what looked like a great desert in the middle of the ocean in Home Reef. “We looked out, and in front of us it was as if there was no more sea,” he said. “It was like the Sahara, with rolling hills of sand as far as the eye could see.” But the yacht he was on, the Maiken, wasn't anywhere near land. The "desert" he was describing was actually a "sea" of floating pumice stones. Some distance away was an underwater volcano erupting and giving birth to a new island. “Then we saw a black pillar shooting up into the air, and we understood that it had to be a volcano.” He described the island as a "kind of a smoldering, smoky stuff. It looked like coal, and when there was an eruption, we could see the new material piling up on it.”
Franson reported the discovery and scientists immediately had satellites zooming in on the new island as it was being born. It was the first time that such an island birth was studied in detail. When volcanologist Scott Bryan personally visited the site, he saw that the island was gone, as it was made up only of deposited material that easily washed away. The life of the island lasted only a few months. Bryan believes that a high sea mount was all that's left of it. The pumice stones left behind by the eruption became home to animals like barnacles that hitch a ride as they float to wherever the ocean currents would take them.

Videos of an island volcano erupting in India and the science behind eruption-prediction in i-Mash, after the jump.

Tuesday, July 31, 2007

Bulusan Volcano Erupts in the Philippines Again

Bulusan volcano in Sorsogon in the Philippines erupts anew, endangering nearby towns. If things get worse, an evacuation of the vicinity will be undertaken.

This satellite image on the left, depicted in exaggerated, elevated 3D shows the Bulusan landscape. The volcano itself is 1,559 meters high. It has a 1,000-foot-diameter crater.

The ash spewed by the eruption, if massive enough, like what Mt. Pinatubo ejected, can theoretically become distributed around the globe and help cool the atmosphere to counter global warming.

Monday, July 16, 2007

Indonesia's Mt. Gamkonara Erupting

This powerful photograph of Mt. Gamkonara in Indonesia shows the recent activity of the volcano which erupted explosively in 1673. Eight thousand people have already been evacuated from the danger zone vicinity. Mt. Gamkonara stands at 1,600 meters and is the tallest in the island of Halmahera.