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Stratospheric sulfate from the Gareloi Eruption, 1980: Contribution to the "ambient" aerosol by a poorly documented volcanic eruption
Author(s) -
Sedlacek W. A.,
Mroz E. J.,
Heiken G.
Publication year - 1981
Publication title -
geophysical research letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.007
H-Index - 273
eISSN - 1944-8007
pISSN - 0094-8276
DOI - 10.1029/gl008i007p00761
Subject(s) - volcano , explosive eruption , vulcanian eruption , geology , plume , aerosol , sulfate aerosol , northern hemisphere , debris , altitude (triangle) , impact crater , volcanic ash , atmospheric sciences , panache , stratosphere , pyroclastic rock , astrobiology , meteorology , geochemistry , oceanography , geography , physics , geometry , mathematics
While sampling stratospheric aerosols during July‐August 1980 a plume of "fresh" volcanic debris was observed in the Northern hemisphere. The origin of this material seems to be a poorly documented explosive eruption of Gareloi volcano in the Aleutian Islands. The debris was sampled at an altitude of 19.2 km ‐ almost twice the height of observed eruption clouds. Such remote, unobserved or poorly documented eruptions may be a source that helps maintain the "ambient" stratospheric aerosol background.