Seismic Triggering of Volcanic Eruptions: The 2025 Krasheninnikov Case Study After 450 Years of Dormancy Nanang Dwi Ardi, Salma Nasywa Syahidah, Dadi Rusdiana
Physics Program, FPMIPA, Universitas Pendidikan Indonesia
Abstract
On 3rd August 2025, Krasheninnikov Volcano in Kamchatka, Russia, erupted after approximately 450 years of dormancy. This eruption occurred only five days after a 8.7 Mw earthquake struck offshore Kamchatka, raising questions about earthquake-volcano interactions. Using Global Centroid Moment Tensor (CMT) data from 2020-2025, we analyzed ten significant earthquakes near Krasheninnikov and modeled Coulomb Failure Stress Change (CFS). Results indicate that the 8.7 Mw earthquake imparted a significant positive CFS beneath the volcano, plausibly acting as a trigger. This case supports the hypothesis that large earthquakes can influence volcanic systems, though eruption likelihood also depends on magma chamber conditions, gas pressure, and crustal structure. The findings highlight the importance of integrated monitoring and the potential for improved early warning systems in tectonically active regions.
