image: A researcher loads 18,000-year-old Antarctic ice for continuous analysis. view more
Credit: PNAS
Analyses of Antarctic ice cores indicate that an approximately 192-year series of halogen-rich volcanic eruptions occurred approximately 17,700 years ago and can be attributed to Mount Takahe in West Antarctica; the authors suggest that the halogen may have depleted stratospheric ozone concentrations over Antarctica, triggering a nearly synchronous deglaciation in the Southern Hemisphere that has been previously documented in paleoclimate records.
Article #17-05595: "Synchronous volcanic eruptions and abrupt climate change ?17.7 ka plausibly linked by stratospheric ozone depletion," by Joseph R. McConnell et al.
MEDIA CONTACT: Joseph R. McConnell, Desert Research Institute, Reno, NV; tel: 775-673-7348, 775-772-2418; e-mail: <Joe.McConnell@dri.edu>
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