A5077148126- Plant Pathogens and Fungal Diseases
- Geology and Paleoclimatology Research
- Historical Economic and Social Studies
- Australian History and Society
- Mycorrhizal Fungi and Plant Interactions
- Geological and Geochemical Analysis
- Scottish History and National Identity
- Medical History and Innovations
- Geographic Information Systems Studies
- Lichen and fungal ecology
- Cryospheric studies and observations
- Yeasts and Rust Fungi Studies
- Atmospheric chemistry and aerosols
- Historical Studies on Reproduction, Gender, Health, and Societal Changes
- Atmospheric and Environmental Gas Dynamics
- Canadian Identity and History
- Plant Pathogens and Resistance
- European Political History Analysis
- Botany and Plant Ecology Studies
- Methane Hydrates and Related Phenomena
- Italian Fascism and Post-war Society
- Atmospheric aerosols and clouds
- Political and Economic history of UK and US
- Irish and British Studies
- History of Medicine Studies
British Geological Survey
2018-2024
University of Oxford
1999-2020
University of Leeds
2016
University of St Andrews
2016
University of Edinburgh
1996-2015
University of Manchester
2009-2012
Connecticut College
1825-2012
Universidad de Colima
2008-2010
The Open University
2005-2010
Griffith University
2001-2007
The 39-day long eruption at the summit of Eyjafjallajökull volcano in April–May 2010 was modest size but ash widely dispersed. By combining data from ground surveys and remote sensing we show that erupted material 4.8±1.2·1011 kg (benmoreite trachyte, dense rock equivalent volume 0.18±0.05 km3). About 20% lava water-transported tephra, 80% airborne tephra (bulk 0.27 km3) transported by 3–10 km high plumes. mostly fine (diameter <1000 µm). At least 7·1010 (70 Tg) very (<28 µm), several times...
Abstract The 2014–2015 Bárðarbunga‐Veiðivötn fissure eruption at Holuhraun produced about 1.5 km 3 of lava, making it the largest in Iceland more than 200 years. Over course eruption, daily volcanic sulfur dioxide (SO 2 ) emissions exceeded SO from all anthropogenic sources Europe 2010 by least a factor 3. We present surface air quality observations across Northern together with satellite remote sensing data and model simulations for September 2014. show that was transported lowermost...
The 2010 Eyjafjallajökull lasted 39 days and had 4 different phases, of which the first third (14–18 April 5–6 May) were most intense. Most this period was dominated by winds with a northerly component that carried tephra toward Europe, where it deposited in number locations sampled rain gauges or buckets, surface swabs, sticky‐tape samples air filtering. In UK, collected from each Phases 1–3 combined range latitudes spanning length country. modal grain size gauge 25 μ m, but largest grains...
The fragmentation process and aerodynamic behavior of ash from the Eyjafjallajökull eruption 2010 are investigated by combining grain‐size, Scanning Electron Microscopy (SEM), quantitative particle morphology. Ash samples were collected on land in Iceland at 3–55 km distance volcanic vent, represent various phases pulsating eruption. grain size is fine even for deposits close to suggesting that parent population consisted a substantial amount ash. SEM investigation reveals produced during...
Abstract This study examines the sensitivity of atmospheric dispersion model forecasts volcanic ash clouds to physical characteristics assigned particles. We show that particle size distribution (PSD) used initialise a has significant impact on forecast mass loading particles in atmosphere. is because modeled fall velocity sensitive diameter. Forecasts long‐range transport cloud consider with diameters between 0.1 μm and 100 μm. The diameter over 5 orders magnitude greater than μm, 30 88%...
Research Article| January 01 1967 The characterization and properties of castaprenol-11, -12 -13 from the leaves Aesculus hippocastanum (horse chestnut) AR Wellburn; Wellburn Search for other works by this author on: This Site PubMed Google Scholar J Stevenson; Stevenson FW Hemming; Hemming RA Morton Biochem (1967) 102 (1): 313–324. https://doi.org/10.1042/bj1020313 Views Icon Article contents Figures & tables Video Audio Supplementary Data Peer Review Share Facebook Twitter LinkedIn MailTo...
Abstract. There is a large discrepancy between the size of volcanic ash particles measured on ground at least 500 km from their source volcano (known as cryptotephra) and those reported by satellite remote sensing (effective radius 0.5–9 μm; 95% < 17 μm diameter). Here we present new results fields tephrochronology (a dating technique based layers), dispersion modelling in an attempt to understand why. A literature review measurements prehistoric recent eruptions were used characterise...
The growth rings on the valves of scallops collected from Digby area Bay Fundy are formed only once a year during winter. Observations special collections small have also shown position first ring. This information has been used to construct general curve measurements annuli area.
Resumen en inglés.