Physics
Scientific paper
Oct 2004
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2004georl..3120608s&link_type=abstract
Geophysical Research Letters, Volume 31, Issue 20, CiteID L20608
Physics
10
Volcanology: Ash Deposits, Volcanology: Atmospheric Effects (0370), Volcanology: Eruption Mechanisms, Volcanology: Physics And Chemistry Of Magma Bodies, Volcanology: General Or Miscellaneous
Scientific paper
We suggest that the Tambora 1815 eruption was smaller than previously thought, yielding 30-33 km3 of magma. Valuable insight into the eruption is gained by comparing it to the much smaller 1991 Pinatubo event, which had a similar eruption style and rate. By measuring pre- and post-eruption sulfur concentrations in 1815 ejecta, we estimate that Tambora released 53-58 Tg (5.3-5.8 × 1013 g) of SO2 within a period of about 24 hours on 10-11 April, 1815. This was sufficient to generate between 93 and 118 Tg of stratospheric sulfate aerosols. A value within this range, distributed globally, agrees well with estimates of aerosol mass from ice-core acidity and the radiative impact of the eruption. In contrast to other recent explosive arc eruptions, the Tambora ejecta retain a record of the sulfur mass released, with no ``excess sulfur''.
Gertisser Ralf
Rampino Michael R.
Self Stephen
Thordarson Th.
Wolff John A.
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