Report on Pagan (United States) — June 1981
Scientific Event Alert Network Bulletin, vol. 6, no. 6 (June 1981)
Managing Editor: Lindsay McClelland.
Pagan (United States) Renewed explosions on 11 June
Please cite this report as:
Global Volcanism Program, 1981. Report on Pagan (United States) (McClelland, L., ed.). Scientific Event Alert Network Bulletin, 6:6. Smithsonian Institution. https://doi.org/10.5479/si.GVP.SEAN198106-284170.
18.13°N, 145.8°E; summit elev. 570 m
All times are local (unless otherwise noted)
Residents of Alamagan Island, [roughly 60 km] SSE of Pagan, observed mild ash ejection and "fire and smoke" emerging from the volcano around 11 June. No additional activity has been reported.
Geologic Background. Pagan Island, the largest and one of the most active of the Mariana Islands volcanoes, consists of two stratovolcanoes connected by a narrow isthmus. Both North and South Pagan stratovolcanoes were constructed within calderas, 7 and 4 km in diameter, respectively. The 570-m-high Mount Pagan at the NE end of the island rises above the flat floor of the northern caldera, which may have formed less than 1000 years ago. South Pagan is a 548-m-high stratovolcano with an elongated summit containing four distinct craters. Almost all of the historical eruptions of Pagan, which date back to the 17th century, have originated from North Pagan volcano. The largest eruption of Pagan during historical time took place in 1981 and prompted the evacuation of the sparsely populated island.
Information Contacts: N. Banks, HVO.