Paroxysmal summit activity at Mt. Etna (Italy) monitored through continuous soil radon measurements

Details Paroxysmal summit activity at Mt. Etna (Italy) monitored through continuous soil radon measurements Paroxysmal summit activity at Mt. Etna (Italy) monitored through continuous soil radon measurements

Aug 2005

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2005georl..3216307a&link_type=abstract

Geophysical Research Letters, Volume 32, Issue 16, CiteID L16307

Physics

13

Seismology: Volcano Seismology (8419), Structural Geology: Role Of Fluids, Volcanology: Volcano Monitoring (7280), Volcanology: Instruments And Techniques

Scientific paper

Soil radon emissions have been proved as a useful tool for predicting earthquakes and volcanic eruptions and furthermore aided in determining the location of active faults. Continuous radon monitoring was carried out near Southeast Crater of Mt. Etna in September-November 1998, during a period of frequent eruptive episodes at that crater. Radon anomalies were detected when eruptive episodes and the accompanying volcanic tremor became increasingly intense: no anomalies in radon activity were observed during the first five, and weaker, eruptive episodes, whereas significant spikes in radon activity preceded the latter five episodes by >=46 hours. This probably reflects increased gas leakage through fractures intersecting the shallow plumbing system, as gas pressure in the Southeast Crater conduit became higher with time. Radon monitoring thus might serve to better understand eruptive mechanisms and possible precursors, making further studies in this field a promising perspective.

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