Open AccessThe reawakening of Alaska's Augustine volcano
Author(s) -
Power John A.,
Nye Christopher J.,
Coombs Michelle L.,
Wessels Rick L.,
Cervelli Peter F.,
Dehn Jon,
Wallace Kristi L.,
Freymueller Jeffery T.,
Doukas Michael P.
Publication year - 2006
Publication title -
eos, transactions american geophysical union
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.316
H-Index - 86
eISSN - 2324-9250
pISSN - 0096-3941
DOI - 10.1029/2006eo370002
Subject(s) - geology , lava , volcano , phreatic eruption , lava dome , explosive eruption , seismology , debris , dome (geology) , explosive material , impact crater , geomorphology , geochemistry , magma , archaeology , geography , oceanography , physics , astronomy
Augustine volcano, in south central Alaska, ended a 20‐year period of repose on 11 January 2006 with 13 explosive eruptions in 20 days. Explosive activity shifted to a quieter effusion of lava in early February, forming a new summit lava dome and two short, blocky lava flows by late March (Figure 1). The eruption was heralded by eight months of increasing seismicity, deformation, gas emission, and small phreatic eruptions, the latter consisting of explosions of steam and debris caused by heating and expansion of groundwater due to an underlying heat source.