Results 41 to 50 of about 24,110 (329)

First results of the Piton de la Fournaise STRAP 2015 experiment: multidisciplinary tracking of a volcanic gas and aerosol plume [PDF]

open access: yesAtmospheric Chemistry and Physics, 2017
The STRAP (Synergie Transdisciplinaire pour Répondre aux Aléas liés aux Panaches volcaniques) campaign was conducted over the entire year of 2015 to investigate the volcanic plumes of Piton de La Fournaise (La Réunion, France).
P. Tulet   +34 more
doaj   +1 more source

Gas emission strength and evolution of the molar ratio of BrO/SO2 in the plume of Nyiragongo in comparison to Etna [PDF]

open access: yes, 2015
Airborne and ground-based differential optical absorption spectroscopy observations have been carried out at the volcano Nyiragongo (Democratic Republic of Congo) to measure SO2 and bromine monoxide (BrO) in the plume in March 2004 and June 2007 ...
Aiuppa   +73 more
core   +1 more source

Volcanic plume simulation on large scales [PDF]

open access: yesJournal of Volcanology and Geothermal Research, 1998
Abstract The plume model ATHAM (Active Tracer High Resolution Atmospheric Model) is designed to simulate explosive volcanic eruptions for a given mass flux of pyroclastic material under realistic atmospheric background conditions. Based on the assumption that all particles are small the model's equations are simplified such that, besides equations ...
Oberhuber, J.   +3 more
openaire   +2 more sources

Volcano remote sensing with ground-based spectroscopy [PDF]

open access: yes, 2005
The chemical compositions and emission rates of volcanic gases carry important information about underground magmatic and hydrothermal conditions, with application in eruption forecasting.
Burton M.R   +5 more
core   +1 more source

Reactive halogen chemistry in volcanic plumes [PDF]

open access: yesJournal of Geophysical Research: Atmospheres, 2007
Bromine monoxide (BrO) and sulphur dioxide (SO2) abundances as a function of the distance from the source were measured by ground‐based scattered light Multiaxis Differential Optical Absorption Spectroscopy (MAX‐DOAS) in the volcanic plumes of Mt. Etna on Sicily, Italy, in August–October 2004 and May 2005 and Villarica in Chile in November 2004.
BOBROWSKI N   +6 more
openaire   +2 more sources

Annex to: Volcanic Ash Cloud Observation using Ground-based Ka-band Radar and Near-Infrared Lidar Ceilometer during the Eyjafjallajökull eruption

open access: yesAnnals of Geophysics, 2015
Volcanic ash plumes are formed during explosive volcanic eruptions. After advection over several thousands of kilometers, volcanic ash particles are highly fragmented, dispersed and aged with micron- sized sorting.
Frank S. Marzano   +4 more
doaj   +1 more source

Quantification of the depletion of ozone in the plume of Mount Etna [PDF]

open access: yes, 2014
Volcanoes are an important source of inorganic halogen species into the atmosphere. Chemical processing of these species generates oxidised, highly reactive, halogen species which catalyse considerable O3 destruction within volcanic plumes. A campaign of
Aiuppa, A   +4 more
core   +3 more sources

DSMC Modeling Of Gasdynamics, Radiation And Fine Particulates In Ionian Volcanic Jets [PDF]

open access: yes, 2003
Aerospace ...
Gimelshein, N. E.   +6 more
core   +1 more source

Gas plumes and near-seafloor bottom current speeds of the southernmost Okinawa Trough determined from echo sounders

open access: yesTerrestrial, Atmospheric and Oceanic Sciences, 2019
Using echo sounders to detect gas plumes in seawater is common, especially in the context of hydrothermal circulation areas or gas hydrate-bearing cold seeps.
Ching-Hui Tsai   +7 more
doaj   +1 more source

Post-collisional Tertiary–Quaternary mafic alkalic magmatism in the Carpathian–Pannonian region: a review [PDF]

open access: yes, 2004
Mafic alkalic volcanism was widespread in the Carpathian–Pannonian region (CPR) between 11 and 0.2 Ma. It followed the Miocene continental collision of the Alcapa and Tisia blocks with the European plate, as subduction-related calc-alkaline magmatism was
Albarede   +75 more
core   +1 more source

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