Search
Search Results
-
A Textural Perspective on the Magmatic System and Eruptive Behaviour of Merapi Volcano
Quantitative textural analysis of crystals, including their number density, shapes, sizes, overall abundance and size distribution can be used to...
-
The dynamics of dual-magma-chamber system during volcanic eruptions inferred from physical modeling
A magma plumbing system with dual magma chambers beneath active volcanoes is commonly observed through petrological and geophysical measurements....
-
Magma fragmentation: a perspective on emerging topics and future directions
The breaking apart of magma into fragments is intimately related to the eruptive style and thus the nature and footprint of volcanic hazards. The...
-
Eruption of compositionally heterogeneous andesites from a complex storage region during the 2006 eruption of Augustine Volcano
Despite the common occurrence of heterogeneous andesitic eruptions, few studies have investigated the compositional effects on microlite...
-
Rapid eruptive transitions from low to high intensity explosions and effusive activity: insights from textural analysis of a small-volume trachytic eruption, Ascension Island, South Atlantic
Proximal deposits of small-volume trachytic eruptions are an under-studied record of eruption dynamics despite being common across a range of...
-
An Eхplosive–Effusive Eruption of Alaid Volcano in 2022 (Atlasova Island, Northern Kuril Islands)
AbstractThis work reports on data on a moderate effusive-explosive eruption of a summit crater of Alaid volcano (Atlasova Island, Northern Kuril...
-
Historical earthquakes, tsunamis, volcanic eruptions and comets in the eastern Mediterranean and the Sinai sub-plate: evidence from two little-known Greek documents
The eastern Mediterranean region is characterized by high seismicity which has been documented by instrumental data and historical reporting. Strong...
-
Exploring Eruptive Phenomena from Vesiculation and Crystallization
The previous chapters explained the mechanism of each individual process (elementary process) involved in the vesiculation and crystallization of...
-
Transitions: comparing timescales of eruption and evacuation at Volcán de Fuego (Guatemala) to understand relationships between hazard evolution and responsive action
During volcanic crisis, effective risk mitigation requires that institutions and local people respond promptly to protect lives and livelihoods. In...
-
Permutation entropy variations in seismic noise before and after eruptive activity at Shinmoedake volcano, Kirishima complex, Japan
Permutation entropy (PE) is a complexity metric that encodes a time series into sequences of symbols and can be used to decipher between...
-
Fragmentation Processes in Magmas and Volcanic Rocks
In this chapter, we consider the many processes by which magma and volcanic rock can be fragmented. This comprehensive review describes the...
-
Formation of dense pyroclasts by sintering of ash particles during the preclimactic eruptions of Mt. Pinatubo in 1991
Dense, vitric, dacitic pyroclasts (dacite lithics) from the 1991 preclimactic explosions of Mt. Pinatubo were analyzed for their vesicular and...
-
Shallow crystallization of eruptive magma inferred from volcanic ash microtextures: a case study of the 2018 eruption of Shinmoedake volcano, Japan
The occurrence of groundmass crystals reveals the shallow conduit process of magmas, which affects the behavior of eruptions. Here, we analyzed...
-
Integrating hazard, exposure, vulnerability and resilience for risk and emergency management in a volcanic context: the ADVISE model
Risk assessments in volcanic contexts are complicated by the multi-hazard nature of both unrest and eruption phases, which frequently occur over a...
-
Subaerial Pyroclastic Density Currents (Pyroclastic Flows and Surges)
Explosive eruptions can produce a spectrum of pyroclastic density currents (pdcs) which we describe in this chapter. Pdcs are potentially the most...
-
Constraints on the pre-eruptive magma storage conditions and magma evolution of the 56–30 ka explosive volcanism of Ciomadul (East Carpathians, Romania)
A detailed mineral-scale study was conducted on pumices of the latest, dominantly explosive eruption epoch (56–30 ka) of Ciomadul, the youngest,...
-
Late-stage groundmass differentiation as a record of magma stagnation, fragmentation, and rewelding
In the 2011 eruption of Shinmoedake of the Kirishima volcano group, sub-Plinian eruptions were followed by lava extrusion with intermittent Vulcanian...
-
Estimating the ashfall volume for a small eruption using ellipse-approximated isopach analysis: how many seeking points are required to determine a suitable axis?
A volcanic ash eruption began on March 1, 2018, and a lava flow was observed on March 6 at Shinmoedake volcano in the Kirishima Volcano Group. The...
-
Eruptions in the Northern Group of Volcanoes, in Kamchatka, during the Early 21st Century
AbstractThe early 21st century saw increased eruption activity of major volcanoes in the Northern Group of Kamchatka, namely, Sheveluch,...
-
Evolution and dynamics of the open-vent eruption at Arenal volcano (Costa Rica, 1968–2010): what we learned and perspectives
On 29 July 1968, there was a violent reactivation of Arenal volcano. The resulting westward-directed lateral blast eruption left two villages...
