How does dome growth during 2004-2008 compare to 19801986?
Dome growth during 2004-2008 lasted half as long (3 years) as the 1980-1986 eruption (6 years) while adding approximately the same amount of lava to the crater. The combined volume of the 1980-86 and 2004-08 lava domes is about 7 percent of the volume that was removed by the landslide on May 18, 1980, and 11 percent of the volume of the present horseshoe-shaped crater. The most obvious difference between the two periods is that dome growth during 19801986 was episodic, with growth spurts that lasted from a few days to nearly a year, interspersed with periods of no growth that lasted from several weeks to almost a year. In contrast, dome growth during 20042008 was continuous from October 2004 to January 2008.
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- How does dome growth during 2004-2008 compare to 19801986?
