what hazard is associated with dome collapse
elutriation of fines from dome-collapse pyroclastic flows. Vulcanian explosions produced more fallout tephra in about five weeks in 1997 than did dome collapses in about one year from June 1996 to June 1997 (Bonadonna et al. 2002). However, the ash associated with dome-collapse pyroclastic flows seems to be more hazardous to health than Vulcanian tephra, as it contains more crystalline silica and is very fine-grained (Baxter et a/. 1999; Moore et al. 2002). Furthermore, large dome collapses also occurred once dome