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SHAKE AND BLOW
New Zealand volcano showing activity
by Staff Writers
Wellington, New Zealand (UPI) Nov 16, 2012


disclaimer: image is for illustration purposes only

A volcano in the center of New Zealand's North Island is showing signs of a possible imminent eruption, vulcanologists in the country are warning.

The Institute of Geological and Nuclear Sciences said the temperature beneath Ruapehu's Crater Lake was 1,400 degrees Fahrenheit but the lake itself was only 68 degrees F., suggesting a volcanic vent may be partly blocked.

A resulting pressure build-up beneath the Crater Lake would mean a heightened likelihood of eruptions in the near future, experts said.

"We think the pressure beneath Ruapehu Crater Lake has increased and this makes an eruption more likely over the next weeks to months," vulcanologist Steve Sherburn said in a statement.

Such a build-up of pressure beneath the lake was thought to have triggered the last eruption of Ruapehu in 2007 and a smaller eruption in 2006, Chinese news agency Xinhua reported.

In August, two other New Zealand volcanoes erupted.

Mount Tongariro, also in central North Island, erupted Aug. 6 for the first time since 1897.

Two day later White Island, a marine volcano about 30 miles to the east of North Island, erupted, sending up an ash plume aloft in its first eruption since 2001.

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Taking the 'pulse' of volcanoes using satellite images
Miami FL (SPX) Nov 08, 2012
A new study by scientists at the University of Miami (UM) Rosenstiel School of Marine and Atmospheric Science uses Interferometric Synthetic Aperture Radar (InSAR) data to investigate deformation prior to the eruption of active volcanoes in Indonesia's west Sunda arc. Led by geophysicist Estelle Chaussard and UM Professor Falk Amelung, the study uncovered evidence that several volcanoes did in f ... read more


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