On the triggering of volcanic eruptions by Earth tides

作者：Frederick J. Mauk, Malcolm J. S. Johnston · 发表于：Journal of Geophysical Research Atmospheres · 年份：1973 · DOI：10.1029/jb078i017p03356 · 被引用次数：99 · 研究领域：Geological and Geochemical Analysis、Geology and Paleoclimatology Research、earthquake and tectonic studies

The reported times of major eruptions since 1900 from the world's nonsubmarine volcanoes have been compared at each location with the phase of the various components of the solid earth tide. A correlation, significant to the 5% level, was found between eruption times and the fortnightly component of the tide for the total data set of 680 eruptions. The probability of eruption is greatest at times of maximum tidal amplitude. For individual volcanoes significant peaks in eruption probability occur also at phases other than at the fortnightly tidal maximum. The volcanoes could be subgrouped in terms of petrology, geographic location, local crustal deformation rates, and other geophysical parameters. Subpopulations of andesitic and basaltic eruptions each showed significant concentrations of events at the tidal maximum. In addition, basalt eruptions had an equally well developed concentration at the tidal minimum. In a detailed study of the Japanese region, each volcano that characteristically erupted at or near the fortnightly tidal maximum is located in an area having a negative Bouguer anomaly, a large crustal thickness, and a small rate of horizontal crustal deformation. Conversely, volcanoes in areas characterized by thinner crusts and crustal deformation rates greater than 3.0 cm/yr generally erupt at or near the fortnightly tidal maximum.