Results 41 to 50 of about 6,088 (199)

Improving volcanic ash predictions with the HYSPLIT dispersion model by assimilating MODIS satellite retrievals [PDF]

Atmospheric Chemistry and Physics, 2017
Currently, the National Oceanic and Atmospheric Administration (NOAA) National Weather Service (NWS) runs the HYSPLIT dispersion model with a unit mass release rate to predict the transport and dispersion of volcanic ash.
T. Chai, A. Crawford, B. Stunder, M. J. Pavolonis, R. Draxler, A. Stein   +5 more
doaj   +1 more source

Iron and Nickel Substituted Perovskite Cobaltites for Sustainable Oxygen Evolving Anodes in Alkaline Environment

ChemSusChem, Volume 18, Issue 6, March 15, 2025.
Perovskite oxide catalysts with reduced Co content, substituted by Fe and Ni, are synthesized and studied for their activity in the oxygen evolution reaction in alkaline media. An increase in the intrinsic catalytic activity (obtained by the (RctCdl)−1 product) of the base material (Ba0.5Gd0.8La0.7Co2O6‐δ) is seen for an as high as 70 % substitution of
Henrik Petlund, Alaa Faid, Junjie Zhu, Anuj Pokle, Truls Norby, Svein Sunde, Athanasios Chatzitakis   +6 more
wiley   +1 more source

Elemental composition and mineralogical characteristics of volcanic ash and soil affected by the eruption of Mount Semeru, East Java

Journal of Degraded and Mining Lands Management
The eruption of Mount Semeru at the end of 2021 was responsible for emitting volcanic ash with specific characteristics. These unique mineralogy and chemical properties have both positive and negative effects on soil fertility, as excessive heavy metals ...
Tri Candra Setiawati, Mohammad Nurcholis, Basuki Basuki, Subhan Arif Budiman, Dwi Fitri Yudiantoro   +4 more
doaj   +1 more source

The impact of Volcanic Ash of Kelud Eruption and Manure on Availability and Magnesium Uptake of Corn in Alfisols

Sains Tanah: Journal of Soil Science and Agroclimatology, 2014
Impact of fresh volcanic ash on soil fertility is rarely studied mainly on nutrient availability, uptake and on plant growth. Fresh volcanic ash is primary mineral that takes time and agents such as organic materials to mineralized before it contribute ...
Suntoro, Hery Widijanto, Sudadi, Eko Eri Sambodo   +3 more
doaj   +1 more source

A review of volcanic ash aggregation [PDF]

Physics and Chemistry of the Earth, Parts A/B/C, 2012
Most volcanic ash particles with diameters
Brown, R.J., Bonadonna, C., Durant, A.J.
openaire   +4 more sources

Ensemble-Based Data Assimilation of Volcanic Ash Clouds from Satellite Observations: Application to the 24 December 2018 Mt. Etna Explosive Eruption

Atmosphere, 2020
Accurate tracking and forecasting of ash dispersal in the atmosphere and quantification of its uncertainty are of fundamental importance for volcanic risk mitigation.
Federica Pardini, Stefano Corradini, Antonio Costa, Tomaso Esposti Ongaro, Luca Merucci, Augusto Neri, Dario Stelitano, Mattia de’ Michieli Vitturi   +7 more
doaj   +1 more source

Nonisothermal viscous sintering of volcanic ash [PDF]

Journal of Geophysical Research: Solid Earth, 2014
AbstractVolcanic ash is often deposited in a hot state. Volcanic ash containing glass, deposited above the glass transition interval, has the potential to sinter viscously both to itself (particle‐particle) and to exposed surfaces. Here we constrain the kinetics of this process experimentally under nonisothermal conditions using standard glasses.
Wadsworth, Fabian B., Vasseur, Jérémie, von Aulock, Felix W., Hess, Kai-Uwe, Scheu, Bettina, Lavallée, Yan, Dingwell, Donald B.   +6 more
openaire   +3 more sources

Operational all‐sky assimilation of geostationary infrared water‐vapour channels in the regional ICON‐D2 model with an ensemble Kalman filter

Quarterly Journal of the Royal Meteorological Society, EarlyView.
Though many studies have shown potential benefit in assimilating all‐sky infrared radiances from geostationary satellites, at numerical weather prediction centres it is still common practice to assimilate clear‐sky radiances. We present the operationalization of the all‐sky assimilation of the spinning enhanced visible and infrared imager (SEVIRI ...
Annika Schomburg, Christoph Schraff, Christina Köpken‐Watts, Klaus Stephan, Liselotte Schühl, Robin Faulwetter   +5 more
wiley   +1 more source

Bridging the Late Antique Gap in Northwest Arabia: New Archaeological Evidence on the Occupation of Wādī al‐Qurā (al‐ʿUlā [AlUla], Saudi Arabia) Between the Third and Seventh Centuries CE

Arabian Archaeology and Epigraphy, EarlyView.
ABSTRACT In 2019, the Dadan Archaeological Project (CNRS/RCU/AFALULA) identified a Late Antique village 1 km south of ancient Dadan in the al‐ʿUlā valley (northwest Saudi Arabia). Three excavation seasons at this site (2021–2023) have uncovered a massive building constructed in the late third or early fourth cent.
Jérôme Rohmer, Abdulrahman Alsuhaibani, Charlène Bouchaud, Elora Chambraud, Vladimir Dabrowski, Hatem Djerbi, Fabien Lesguer, Hervé Monchot, Paul Picavet, Louise Purdue, Bertrand Riba, Shadi Shabo   +11 more
wiley   +1 more source

Investigating Technology and Raw Materials Source of the Archaic and Classical Architectural Terracottas From the Athenaion in Castro (Apulia, Italy)

Archaeometry, EarlyView.
ABSTRACT Since 2000, archaeological excavations have brought to light the sanctuary of Athena in Castro (Apulia, Italy), including terracotta roofs dated between the 6th and 4th centuries bce. Based on their morphological and stylistic features, it is suggested that the terracotta items were manufactured in the Greek colony of Taras (modern Taranto ...
M. M. N. Franceschini, T. Ismaelli, S. Vettori, L. Chelazzi, S. Ciattini, F. Di Benedetto, C. Grifa, E. Cantisani   +7 more
wiley   +1 more source