Direct measurements (22): Acoustic records
10 km high plume
(2001, 2003, next?)
Other basaltic volcanoes have magmatic plume eruptions:
Cerro Negro
(Nicaragua)
Lopevi
(Vanuatu)
Similar mechanisms than Shishaldin?
1992, similar to 1968 eruption
(6 wt% H2O + 1 wt% CO2);