Interaction Between Moderate Earthquakes and Volcanic Eruptions: Analyses of Global Data Catalog

Research output: Contribution to journalArticlepeer-review

1 Citation (Scopus)

Abstract

The interaction between earthquakes and volcanic eruptions is investigated by analyzing a modern seismic data catalog of centroid moment tensor solutions and eruption records summarized by the Smithsonian Institution. To determine the average features of the interactions, the numbers of earthquakes that occurred before and after the initiation of each eruption with a volcanic explosivity index of larger than or equal to 2 are analyzed. The results show that moderate earthquakes, which have moment magnitudes of 5 to 6 (Mw 5–6), are activated within a horizontal distance of 50 km from volcanoes for about 0.3 years after the initiation of an eruption. About 13% of volcanic eruptions are accompanied by moderate earthquakes. The occurrence possibility of earthquakes every 0.1 years for 0.3 years after an eruption is about 5 times larger than normal. No significant dependence on the tectonic settings and major rock types is recognized.

Original languageEnglish
Pages (from-to)8199-8204
Number of pages6
JournalGeophysical Research Letters
Volume45
Issue number16
DOIs
Publication statusPublished - 2018 Aug 28

Keywords

  • earthquake
  • interaction
  • trigger
  • volcanic eruption

ASJC Scopus subject areas

  • Geophysics
  • Earth and Planetary Sciences(all)

Fingerprint Dive into the research topics of 'Interaction Between Moderate Earthquakes and Volcanic Eruptions: Analyses of Global Data Catalog'. Together they form a unique fingerprint.

Cite this