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6/21/2007

Activity of Kamchatka's erupting volcano continues growing

PETROPAVLOVSK-KAMCHATSKY, June 20 (Itar-Tass) - Kamchatka Peninsula's Klyuchevskaya Sopka volcano that has been erupting since February 15 has shown signs of growing activity, sources at the regional affiliation of the Geophysical Service of the Russian Academy of Sciences said.
About 00:00 hours local time Wednesday /11:00 hours GMT Tuesday/, the Klyuchevskaya Sopka ejected a spout of ash to the altitude of 9,000 or so meters. The spouting could not be observed visually, as the crater of Eurasia's largest active volcano is coated in dense clouds, but data from satellites confirmed that a trail of the spout spread 80 kilometers westwards at the altitude of about 7,000 meters.
Also, the fallout of ash precipitation was registered in the town of Kozyrevsk located 45 kilometers away from Klyuchevskaya Sopka.
Surveyors have registered 124 seismic events near the volcano since Tuesday morning, including volcanic tremor of up to 83.9 mkm per second.

Volcano
Hazardous Sulfur Dioxide Concentrations Measured at Kilauea Volcano
HVO scientists measured concentrations greater than 10 ppm in a broad area adjacent to Halema‘uma‘u crater. Sulfur Dioxide gas is persistently emitted at Kîlauea's summit. Typical concentrations are generally negligible except for areas downwind of Halema‘uma‘u crater, where they can get up to 2.5 ppm (parts-per-million) in narrow zones.
When sulfur dioxide concentrations greater than 1 ppm (equal to 1,000 parts per billion) are measured at the Jaggar museum or at the Kîlauea Visitor's Center, the buildings are closed and employees and visitors are advised to relocate to areas with cleaner air. See http://www2.nature.nps.gov/air/webcams/parks/havoso2alert/havoalert.cfm .
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