Live Breaking News & Updates on Initial Phases

Stay updated with breaking news from Initial phases. Get real-time updates on events, politics, business, and more. Visit us for reliable news and exclusive interviews.

Frontiers | Sequence of Volcanic Activity of Sakurajima Volcano, Japan, as Revealed by Non-Eruptive Deflation

Since 1955, the Sakurajima volcano has experienced repeated Vulcanian eruptions accompanied by intense air-shocks, large ash clouds, and deflation ground deformations. However, ground deflations sometimes occurred even if no eruption took place. In this study, we categorize deflation events contained in continuous deformation records covering eruptive activities at the Sakurajima volcano Minamidake crater during the period from November 2017 to December 2020. The deflation events are classified into eruptive deflation and non-eruptive deflation (NED) types by examining the seismic data, infrasound generations, and visual phenomena. Their event type occurrence characteristics are then further clarified based on their relationships to pressure source volume changes. Comparing the pressure source volume changes with the monthly mass of volcanic ash expelled from the crater, which is estimated from deposition data around the volcano, we found the contribution of NED events to volcanic ash ....

Ecuador General , United States , Augustine Volcano , Provincia De Morona Santiago , Japan General , Jt Freymueller Reston , Minamidake Mori , Mp Ryan Chichester , Kyushu Regional Development Bureau , Committee Of Prediction Volcanic Eruption , Osumi Office Of The River , Ministry Of Education , Sakurajima Volcano Research Center , Scientific Research , Volcanological Bulletin Japan Meteorological Agency , Kagoshima Meteorological Office , Disaster Prevention Research Institute , Kyoto University , Japan Meteorological Agency , Us Geological Survey Professional Paper , Research Program , Single Force Components , Ministry Of Land , Minamidake Summit , Summit Crater Eruptions Since , Sakurajima Volcanological Observatory ,