Search
Search Results
-
Petrology, geochemistry, and crystal size distribution of the basaltic andesite–dacite association at Mt. Sumbing, Central Java, Indonesia: Insights to magma reservoir dynamics and petrogenesis
Ten rock samples consisting of one pyroclastic density current (PDC1) deposit, seven lava flows (LF1–7), and two summit lava domes (LD1, 2) were...
-
The pivotal role of Vulcanian activity in ending the explosive phase of rhyolitic eruptions: the case of the Big Obsidian Flow eruption (Newberry Volcano, USA)
Explosive volcanism produces myriad hazards from pyroclastic flows to widespread ejecta dispersal. Effusive eruptions can emit noxious, damaging...
-
Mid-Holocene lateral collapse of Antuco volcano (Chile): debris avalanche deposit features, emplacement dynamics, and impacts
Antuco (37.4°S, 71.4°W; Chile) is a dominantly basaltic stratovolcano whose original ~ 3300 m altitude main cone experienced a catastrophic sector...
-
Lessons learned from the 1980–1986 eruption of the Mount St. Helens composite lava dome
After its cataclysmic explosive eruptive activity on May 18, 1980, most of the output of Mount St. Helens (MSH) for the next six and a half years was...
-
Reexamination of the magma plumbing system of the Suwolbong tuff ring, Jeju Island, Korea, based on a refined componentry analysis
The Suwolbong tuff ring is a basaltic monogenetic volcano in the Quaternary intraplate volcanic field of Jeju Island, Korea. The tuff ring was...
-
Characterizing lithological, weathering, and hydrothermal alteration influences on volcanic rock properties via spectroscopy and laboratory testing: a case study of Mount Ruapehu volcano, New Zealand
The geomechanical characterization of volcanic material has important implications for geothermal and mineral exploration, engineering design,...
-
Sediment waves and the gravitational stability of volcanic jets
It is increasingly recognized that the gravitational stability of explosive eruption columns is governed by complex ash-pumice-gas (multiphase)...
-
Cooling rates of pyroclastic deposits inferred from mineral magnetic investigations: a case study from the Pleistocene Mýtina Maar (Czech Republic)
Tephra layers of the Mýtina Maar, Czech Republic, contain ferrimagnetic Mg–Al-rich titanomagnetite, which is suggested to originate from a...
-
A laboratory-scale study on the role of mechanical vibrations in pore pressure generation in pyroclastic materials: implications for pyroclastic flows
The results of laboratory-scale experiments with ignimbrite material are reported and discussed. The ignimbrite material contained in a rotating drum...
-
Tsunami Waveform Stacking and Complex Tsunami Forcings from the Hunga-Tonga Eruption
On January 15, 2022 the Hunga Tonga Hunga Ha’apai volcano erupted violently, generating a significant tsunami that was observed around the world....
-
Calibration strategies of PDC kinetic energy models and their application to the construction of hazard maps
The availability of computer tools able to describe the behavior of pyroclastic density currents (PDCs) with uncertainty quantification is of primary...
-
Merapi’s Lahars: Characteristics, Behaviour, Monitoring, Impact, Hazard Modelling and Risk Assessment
Lahar is an Indonesian term, and Merapi volcano is arguably one of the most renowned lahar producers worldwide. Frequent and voluminous lahars at...
-
The Effectiveness of Geotrails to Support Sustainable Development in the Campi Flegrei Active Volcanic Area
The fruition and protection of natural heritage to restore cultural identity and promote the regeneration of a marginal urban area fully comply with...
-
Hydrovolcanic activity on a continental shelf inferred from the subsurface diatreme- and crater-filling deposits of Jeju Island, Korea
Jeju Island comprises numerous tuff rings and tuff cones and their reworked deposits in the subsurface, which formed on the ca. 120-m-deep Yellow Sea...
-
Time Pulses of Cenozoic Explosive Phreatic Eruptions in Southwestern Primorye: Correlation of the Results of Isotopic and Phytostratigraphic Age Dating
AbstractThe Cenozoic tephroid deposits as products of explosive phreatic eruptions of maar volcanoes in the southwestern part of the Primorye region...
-
Investigation of variable aeration of monodisperse mixtures: implications for pyroclastic density currents
The high mobility of dense pyroclastic density currents (PDCs) is commonly attributed to high gas pore pressures. However, the influence of spatial...
-
Inferring pyroclastic density current flow conditions using syn-depositional sedimentary structures
The processes occurring in the basal region of concentrated pyroclastic density currents (PDCs) influence the mobility, runout distance, and damage...
-
Traces of Catastrophic Volcanic Eruptions in the Moscovian Stage (Middle Pennsylvanian, Carboniferous) in the Central East European Platform
AbstractTraces of extremely powerful explosive volcanic eruptions are documented in the southern Moscow Syneclise; the eruptions occurred in the...
-
Influence of hydrothermal recharge on the evolution of eruption styles and hazards during the 2018–2019 activity at Kuchinoerabujima Volcano, Japan
The activity of the 2018 – 2019 eruption of Kuchinoerabujima Volcano in Japan changed from continuous ejection of ash-laden plumes between October 21...
