Monitoring volcanic ash in the atmosphere
نویسندگان
چکیده
منابع مشابه
The Injection of Volcanic Ash into the Atmosphere
In this paper, we present some physical models that can describe the ascent of volcanic ash into the atmosphere during a volcanic eruption. We consider both sustained volcanic eruption columns and discrete volcanic thermal clouds. To test the modeling approach, we compare our predictions of the ascent rate of a model cloud with some observations of the ascent of the ash cloud during the April 1...
متن کاملRemoval Processes of Volcanic Ash Particles from the Atmosphere
INTRODUCTION The use of satellite techniques provides valuable information for mapping ash hazards, as well as the means to study and predict the fates of volcanic clouds. We have used ultraviolet (TOMS – Total Ozone Mapping Spectrometer) and infrared (e.g., AVHRR – Advanced Very High Resolution Radiometer; HIRS2 – High Resolution Infrared Radiation Sounder/2; GOES – Geostationary Operational E...
متن کاملVolcanic ash in the air we breathe
Earth is no stranger to volcanism. Since proto-Earth and crustal formation, volcanoes have provided pathways for degassing and cooling of our planet’s interior. Volcanism played an important role in the formation of the early atmosphere, oceans and continents, and was likely a necessary component for the development of life. Throughout our species brief history, innumerable volcanoes have erupt...
متن کاملMinerals in Volcanic Ash 1: Primary Minerals and Volcanic Glass
Volcanic ash is fragments of magma, and consists of minerals and volcanic glass. These materials in the ash can provide important information on the nature of the magma, because chemical compositions of magma usually show distinct features in each volcano, and because assemblages and compositions of minerals reflect their host melt. Using assemblages and chemical compositions of minerals and gl...
متن کاملHygroscopic Properties of Volcanic Ash
Limited observational data exists on the physical interactions between volcanic ash particles and water vapor; yet it is thought that these interactions can strongly impact the microphysical evolution of ash, with implications for its atmospheric lifetime and transport, as well as formation of water and ice clouds. In this study, we investigate for the first time, the hygroscopic properties of ...
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ژورنال
عنوان ژورنال: SPIE Newsroom
سال: 2013
ISSN: 1818-2259
DOI: 10.1117/2.1201306.004865