Magma intrusions and eruptions commonly produce abrupt changes in seismicity far from
magma conduits,,, that cannot be associated with the diffusion of pore fluids or heat. Such …

Abstract A collapsed caldera, 1.6 km in diameter and 450 m in depth, was formed at the
summit of Miyakejima Volcano during the 2000 eruption. The collapsed caldera appeared …

Abstract Recent advances in Global Positioning System (GPS), tilt and Interferometric
Synthetic Aperture Radar (InSAR) have greatly increased the availability of volcano …

This report highlights the usefulness and applicability of various gravimetric methods for
studying earthquakes and volcanic activities. A high-resolution gravity anomaly map of …

Eruptive activity at the Showa crater of the Sakurajima volcano has steadily increased since
it resumed in June 2006, and 2718 vulcanian eruptions occurred during the period from …

Calderas are ubiquitous topographic features of volcanos, yet caldera formation itself has
not been recorded intensively by modern measurement techniques. Here we report the …

Some of the largest and most anomalous volcanic earthquakes have non‐double‐couple
focal mechanisms. Here, we investigate the link between volcanic unrest and the occurrence …

Lateral migration of magma away from Miyakejima volcanic island, Japan, generated
summit subsidence, associated with summit explosions in the summer of 2000. An …

The devastation caused by the January 2022 eruption of Hunga Tonga-Hunga Ha'apai
volcano (HTHH) in the Tongan archipelago reminded us of the importance of monitoring …

The formation of ring faults yields important implications for understanding the structural and
dynamic evolution of collapse calderas and potentially associated ash-flow eruptions …