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SHAKE AND BLOW
Unrestricted access to the details of deadly eruptions
by Staff Writers
Bristol UK (SPX) Jan 22, 2013


File image courtesy AFP.

Details of around 2,000 major volcanic eruptions which occurred over the last 1.8 million years have been made available in a new open access database, complied by scientists at the University of Bristol with colleagues from the UK, US, Colombia and Japan. Volcanic eruptions have the potential to cause loss of life, disrupt air traffic, impact climate, and significantly alter the surrounding landscape.

Knowledge of the past behaviours of volcanoes is key to producing risk assessments of the hazards of modern explosive events. The open access database of Large Magnitude Explosive Eruptions (LaMEVE) will provide this crucial information to researchers, civil authorities and the general public alike.

Compiled by an international team headed by Dr Sian Crosweller from the Bristol's School of Earth Sciences with support from the British Geological Survey, the LaMEVE database provides - for the first time - rapid, searchable access to the breadth of information available for large volcanic events of magnitude 4 or greater with a quantitative data quality score.

Dr Crosweller said: "Magnitude 4 or greater eruptions - such as Vesuvius in 79AD, Krakatoa in 1883 and Mount St Helens in 1980 - are typically responsible for the most loss of life in the historical period. The database's restriction to eruptions of this size puts the emphasis on events whose low frequency and large hazard footprint mean preparation and response are often poor."

Currently, data fields include: magnitude, Volcanic Explosivity Index (VEI), deposit volumes, eruption dates, and rock type; such parameters constituting the mainstay for description of eruptive activity.

Planned expansion of LaMEVE will include the principal volcanic hazards (such as pyroclastic flows, tephra fall, lahars, debris avalanches, ballistics), and vulnerability (for example, population figures, building type) - details of value to those involved in research and decisions relating to risk.

LaMEVE is the first component of the Volcanic Global Risk Identification and Analysis Project (VOGRIPA) database for volcanic hazards developed as part of the Global Volcano Model (GVM).

Principal Investigator and co-author, Professor Stephen Sparks of Bristol's School of Earth Sciences said: "The long-term goal of this project is to have a global source of freely available information on volcanic hazards that can be used to develop protocols in the event of volcanic eruptions.

"Importantly, the scientific community are invited to actively participate with the database by sending new data and modifications to the database manager and, after being given clearance as a GVM user, entering data thereby maintaining the resource's dynamism and relevance."

'Global database on large magnitude explosive volcanic eruptions (LaMEVE)' by Helen Sian Crosweller, Elizabeth Cottrell, Natalia Irma Deligne, Natalie Ortiz Guerrero, Laura Hobbs, Koji Kiyosugi, Susan Clare Loughlin, Lee Siebert, Robert Stephen John Sparks, Shinji Takarada in the Journal of Applied Volcanology

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Related Links
Open access database of Large Magnitude Explosive Eruptions (LaMEVE)
Bringing Order To A World Of Disasters
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SHAKE AND BLOW
Volcano lava flows worry Italian island
Rome (AFP) Jan 14, 2013
Spectacular lava flows and smoke from an active volcano on the Italian island of Stromboli on Monday sparked fear among inhabitants but geophysicists said the situation was under control. Stromboli is part of the seven-island Eolian Archipelago just off Sicily in southern Italy. The volcano is active but on Monday there was a particularly powerful eruption and sustained lava flows follow ... read more


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