Correlation between rate of sea-level change and frequency of explosive volcanism in the Mediterranean

Details Correlation between rate of sea-level change and frequency of explosive volcanism in the Mediterranean Correlation between rate of sea-level change and frequency of explosive volcanism in the Mediterranean

Oct 1997

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1997natur.389..473m&link_type=abstract

Nature, Volume 389, Issue 6650, pp. 473-476 (1997).

Physics

30

Scientific paper

Volcanic activity has frequently been linked to Quaternary environmental change, either by driving climate modification, or in response to environmental changes. Although a link has been established between large explosive eruptions and small (0.5°C), brief (1-2 years) falls in global temperatures, both the evidence and mechanisms responsible for longer episodes of eruption-induced planetary cooling remain questionable,,,. In contrast, recent research based on ice-core data suggests that rapid climate changes during the past 110,000 years increased explosive volcanic activity. Here we present a statistical analysis relating the frequency of explosive activity of Mediterranean volcanoes - based on dated tephra layers in deep-sea sediment cores - to the rate of late Quaternary sea-level change. The nonlinear correlation between the two is tentatively explained in terms of dynamic responses of the volcanoes to stress-related influences on various spatial scales. The correlation supports a mechanism or mechanisms by which the climate-driven growth and decay of large ice sheets can influence the eruptive chronologies of distant volcanic edifices via changes in global sea level.

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