Based on measurements and observations from Redoubt's previously observed eruptions, these gas emission rates are likely to drop substantially when the eruption wanes.
2.
These volcanic gas emission rates are among the largest ever measured in Alaska, though such high values are consistent with an openly degassing volcanic system that is actively extruding lava.
3.
Starting in late January 2009, and coincident with a strong increase in seismicity, gas emission rates rose to a level ( > 5000 tonnes / d ) suggesting significant unrest at the volcano, and emissions stayed at this level until the eruption began.
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