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The Associated Press: REYKJAVIK, Iceland — A volcano under a glacier in Iceland erupted Wednesday for the second time in less than a month, melting ice, spewing smoke and steam, closing a major road and forcing hundreds of people to flee rising floodwaters. Authorities evacuated 800 residents from around the Eyjafjallajokull glacier as rivers rose by up to 10 feet (3 meters). Emergency officials and scientists said the eruption under the ice cap was 10 to 20 times more powerful than one last month, and carried a much greater risk of widespread flooding. “This is a very much more violent eruption, because it's interacting with ice and water,” said Andy Russell, an expert in glacial flooding at the University of Newcastle in northern England. “It becomes much more explosive, instead of a nice lava flow oozing out of the ground.” Rognvaldur Olafsson, a chief inspector for the Icelandic Civil Protection Agency, said no lives or properties were in immediate danger. Scientists said there was no sign of increased activity at the much larger Katla volcano nearby. Iceland's Meteorological Office said a plume of steam rose at least five miles (eight kilometers) into the air. Scientists aboard a Coast Guard plane that flew over the volcano said the new fissure appeared to be up to 1.2 miles (2 kilometers) long. There were no immediate signs of large clouds of volcanic ash, which could disrupt air travel between Europe and North America. Some domestic flights were canceled, but Iceland's international airport remained open. The volcano, about 75 miles (120 kilometers) east of Reykjavik, erupted March 20 after almost 200 years of silence. The original eruption petered out earlier this week. But Gunnar Gudmundsson, a geophysicist at the Icelandic Meteorological Office, said there were a series of tremors overnight, and rivers in the area began rising Wednesday morning — strong evidence of a new eruption under the glacier. Last month's eruption struck near the glacier in an area that had no ice. Gudmundsson said the new eruption appeared to be about eight or nine kilometers (five to six miles) west of the original fissure. “Most probably this eruption is taking place at the summit … under the ice,” he said. More— http://www.google.com/hostednews/ap/article/ALeqM5jh7lQ-qBxQMPzPd3Iap7_s3YDBfQD9… added by: remanns