Evidence for near-source nonlinear propagation of volcano infrasound from Strombolian explosions at Yasur Volcano, Vanuatu

Characterization of moderate ash‐and‐gas explosions at Santiaguito volcano, Guatemala, from infrasound waveform inversion and thermal infrared measurements

The rapid discharge of gas and rock fragments during volcanic eruptions generates acoustic infrasound. Here we present results from the inversion of infrasound signals associated with small and moderate gas-and-ash explosions at Santiaguito volcano, Guatemala, to retrieve the time history of mass eruption rate at the vent. Acoustic waveform inversion is complemented by analyses of thermal infra...

Modeling Strombolian eruptions of Karymsky volcano, Kamchatka, Russia

A model is proposed to explain temporal patterns of activity in a class of periodically exploding Stromboliantype andesite volcanoes. These patterns include major events (explosions) which occur every 3^30 min and subsequent tremor with a typical period of 1 s. This two-periodic activity is thought to be caused by two distinct mechanisms of accumulation of the elastic energy in the moving magma...

Explosions and periodic tremor at Karymsky volcano, Kamchatka, Russia

Jonathan M. Lees,1 Evgenii I. Gordeev2 and Maurizio Ripepe3 1University of North Carolina, Department of Geological Sciences, CB#3315, Mitchell Hall, Chapel Hill, NC 27599-3315, USA. E-mail: [email protected] 2Geophysical Services, Russian Academy of Science, Petropavlovsk-Kamchatsky, Russia. E-mail: [email protected] 3Dipartimento di Scienze della Terrra, Universita’ di Firenze, via LaPira,...

Application of the Monopole Source to Quantify Explosive Flux During Vulcanian Explosions at Sakurajima Volcano (Japan)

Evidence for Recent Large Magnitude Explosive Eruptions at Damavand Volcano, Iran with Implications for Volcanic Hazards

Damavand is a large dormant stratovolcano in the Alborz Mountains of northern Iran located in one of the most populous provinces, which could be adversely affected by tephra fall from Damavand. The youngest known eruption is a lava flow on the western flanks with an age of 7.3 ka. The volcanic products are predominantly porphyritic trachyandesite. Three major young pumice deposits, named here a...