2018 journal article
Tidal Triggering of Microearthquakes Over an Eruption Cycle at 9 degrees 50 ' N East Pacific Rise
GEOPHYSICAL RESEARCH LETTERS, 45(4), 1825–1831.
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Source: Web Of Science
Added: August 6, 2018
AbstractStudies have found that earthquake timing often correlates with tides at mid‐ocean ridges and some terrestrial settings. Studies have also suggested that tidal triggering may preferentially happen when a region is critically stressed, making it a potential tool to forecast earthquakes and volcanic eruptions. We examine tidal triggering of ∼100,000 microearthquakes near 9°50'N East Pacific Rise recorded between October 2003 and January 2007, which encompasses an eruption in January 2006. This allows us to look at how tidal triggering signal varies over an eruption cycle to examine its utility as a forecasting tool. We find that tidal triggering signal is strong but does not vary systematically in the 2+ years leading up to the eruption. However, tidal triggering signal disappears immediately posteruption. Our findings suggest that tidal triggering variation may not be useful for forecasting mid‐ocean ridge eruptions over a 2+ year timescale but might be useful over a longer timescale.