Abstract：
:A large volcanic sulfate increase observed in ice core records around 1450 C.E. has been attributed in previous studies to a volcanic eruption from the submarine Kuwae caldera in Vanuatu. Both EPMA-WDS (electron microprobe analysis using a wavelength dispersive spectrometer) and SEM-EDS (scanning electron microscopy analysis using an energy dispersive spectrometer) analyses of five microscopic volcanic ash (cryptotephra) particles extracted from the ice interval associated with a rise in sulfate ca. 1458 C.E. in the South Pole ice core (SPICEcore) indicate that the tephra deposits are chemically distinct from those erupted from the Kuwae caldera. Recognizing that the sulfate peak is not associated with the Kuwae volcano, and likely not a large stratospheric tropical eruption, requires revision of the stratospheric sulfate injection mass that is used for parameterization of paleoclimate models. Future work is needed to confirm that a volcanic eruption from Mt. Reclus is one of the possible sources of the 1458 C.E. sulfate anomaly in Antarctic ice cores.
journal_name
Sci Repjournal_title
Scientific reportsauthors
Hartman LH,Kurbatov AV,Winski DA,Cruz-Uribe AM,Davies SM,Dunbar NW,Iverson NA,Aydin M,Fegyveresi JM,Ferris DG,Fudge TJ,Osterberg EC,Hargreaves GM,Yates MGdoi
10.1038/s41598-019-50939-xsubject
Has Abstractpub_date
2019-10-08 00:00:00pages
14437issue
1issn
2045-2322pii
10.1038/s41598-019-50939-xjournal_volume
9pub_type
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