Results 121 to 130 of about 6,961 (274)

Volcanology of tuff rings at Kellyville, Onewhero and Bombay, South Auckland Volcanic Field

, 2011
The South Auckland volcanic field hosts 82 volcanic centres over an area of approximately 300 km2 in the Pukekohe, Bombay, Tuakau, Pukekawa and Onewhero regions. The intraplate, monogenetic basaltic volcanic field was active between 1.59 and 0.51 Ma, and
Gibson, April Christina
core  

Tephrochronology and its application: A review

, 2011
Tephrochronology (from tephra, Gk ‘ashes’) is a unique stratigraphic method for linking, dating, and synchronizing geological, palaeoenvironmental, or archaeological sequences or events.
Lowe, David J., David J. Lowe
core   +1 more source

Explosive eruption processes inferred from high-frequency seismic waveforms of eruption tremor and explosion events

Geophysical Journal International
SUMMARY We investigated the relation between high-frequency seismic signals and eruption size and duration using seismic data of eruption tremor and explosion events generated during sub-Plinian and Vulcanian eruptions, respectively, at various volcanoes.
Azusa Mori, Hiroyuki Kumagai
openaire   +1 more source

The Maddaloni/X-6 eruption stands out as one of the major events during the Late Pleistocene at Campi Flegrei

Communications Earth & Environment
The Campi Flegrei caldera (Italy) is among the most productive volcanoes of the Mediterranean area. However, the volcanic history preceding the VEI 7 Campanian Ignimbrite eruption (~40 ka) is still poorly constrained.
Giada Fernandez, Antonio Costa, Biagio Giaccio, Jacopo Natale, Danilo M. Palladino, Gianluca Sottili   +5 more
doaj   +1 more source

New constraints on the occurrence of Y-3 Upper Pleistocene tephra marker layer in the Tyrrhenian Sea

, 2004
: Munno R. & Petrosino P., New constraints on the occurrence of Y-3 Upper Pleistocene tephra layer in the Tyrrhenian Sea. (IT ISSN 0394 – 3356, 2004). A widespread tephra layer, other than the well known Y-5, has been identified in the Upper Pleistocene ...
Petrosino, Paola, Munno, Rosalba
core  

The 5,660 yBP Boquerón explosive eruption, Teide-Pico Viejo complex, Tenerife

, 2012
Quantitative hazard assessments of active volcanoes require an accurate knowledge of the past eruptive activity in terms of eruption dynamics and the stratified products of eruption.
Pioli, L., Martí Molist, Joan, García, Olaya, Pioli, Laura, Bonadonna, C., Martí, Joan, Bonadonna, Costanza   +6 more
core   +1 more source

The Potential of Stratospheric Aerosol Injection to Reduce the Climatic Risks of Explosive Volcanic Eruptions

Geophysical Research Letters
Sulfur‐rich volcanic eruptions happen sporadically. If Stratospheric Aerosol Injection (SAI) were to be deployed, it is likely that explosive volcanic eruptions would happen during such a deployment.
I. Quaglia, D. Visioni, E. M. Bednarz, D. G. MacMartin, B. Kravitz   +4 more
doaj   +1 more source

Once despised now desired: innovative land use and management of multilayered Pumice Soils in the Taupo and Galatea areas, central North Island, New Zealand

, 2014
The tour brings together innovative land use change and management associated with dairy farming, and land-based effluent disposal, on weakly weathered and multi-layered, glass-rich, Pumice Soils (Vitrands) in the Taupo and Galatea areas.
Lowe, David J., Laubscher, Nadia, Balks, Megan R.   +2 more
core  

High temperature SO2 chemisorption on model systems. Implications for in-plume processes. [PDF]

, 2010
Volcanic volatile species are scavenged by silicate ash during transition through eruption plumes. Scavenging may form S, F and Cl salts and acids on ash surfaces, though the mechanisms and controlling variables remain poorly understood.
Ayris, Paul Martin
core  

Brief and intensive volcanic emissions from Ontong Java Nui heralded Oceanic Anoxic Event 1a

Communications Earth & Environment
The volcanic episode that formed Ontong Java Nui (OJN) in the western Pacific ~ 120 million-year-ago is thought to have triggered Oceanic Anoxic Event (OAE) 1a, yet the cause-effect relationship remains insufficiently understood. Here, we present a Pb-Os-
Hironao Matsumoto, Kosuke T. Goto, Gen Shimoda, Yasuto Watanabe, Kotaro Shirai, Maria Luisa G. Tejada, Akira Ishikawa, Atsushi Ando, Takashi Sano, Junichiro Kuroda, Katsuhiko Suzuki   +10 more
doaj   +1 more source