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![Page 1: NOVAC A global network for volcano gas monitoring · PDF fileNOVAC A global network for volcano gas monitoring Bo Galle Chalmers University of Technology Göteborg, Sweden](https://reader031.fdocuments.in/reader031/viewer/2022020302/5a70b75d7f8b9a9d538c3acd/html5/thumbnails/1.jpg)
NOVAC A global network for volcano gas monitoring
Bo Galle Chalmers University of Technology Göteborg, Sweden
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Outline
• The Scanning mini-DOAS instrument
• The NOVAC project
• Examples of results
– global SO2 emissions
– risk assessment
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The Scanning Mini-DOAS instrument
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SO2 [mg/m²]
Angle to Zenith [deg]
Scanning mini-DOAS
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Scanning mini-DOAS measurement, San Cristobal 23 Nov. 2002
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wind measurement
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NOVAC instrument, San Cristobal Volcano, Nicaragua
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NOVAC Network for Observation of Volcanic and
Atmospheric Change
Idea:
• To establish a network based on Dual-Beam Scanning mini-DOAS instruments on volcanoes.
• To use the data for local geophysical research and risk assessment
• To improve global gas assessments, validate satellites and study correlation of gas emission in time and space
• In addition spectra will be used for atmospheric change research
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Project Partners
Chalmers University B. Galle Heidelberg University U. Platt Institut Aerospatiale de Belgique (IASB), Belgium M. Van Roozendael Cambridge University, UK C. Oppenheimer IFM-GEOMAR, Kiel, Germany T. Hansteen Massachusetts Institute of Technology, USA L. Molina University of Maryland, USA S. Carn
INGV-CT, Italy M. Burton Etna IPGP, France G. Boudon Reunion INETER, Nicaragua A. Muños San Cristobal, Masaya, Conception OVSICORI, Costa Rica E. Duarte Arenal, Turrialba INGEOMINAS, Colombia G. Garzon Galeras, Nevado del Ruiz, N. de Huila SNET, El Salvador D. Escobar San Miguel, Santa Ana OVG, D.R. Congo M. Kasereka Nyiaragongo UNAM, Mexico H. Delgado Popocatepetl, Colima IGEPN, Ecuador S. Hidalgo Tungurahua, Cotopaxi INSIVUMEH, Guatemala E. Sanchez Fuego, Santiaguito INGV-PA, Italy S. Inguaggiato Vulcano OVDAS, Chile T. Hansteen Villarrica, Llama IMO, Iceland K. Vogfjord Eyjafjallajokul, Hekla Phivolcs, Philippines (EOS, Singapore) Mayon
Volcano Observatories
Instrument, Networking and global data exploitation
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Installations made until July 2011
Volcano Country Installed Date
San Cristobal Nicaragua 3 instruments Nov. 2006
Tungurahua Ecuador 3+1 instruments March 2007
Masaya Nicaragua 2 instruments April 2007
Popocatepetl Mexico 3+1 instruments May 2007
Nyiragongo D. R. Congo 4 instruments June 2007
Piton de Fournaise Reunion Island 3+1 instruments August 2007
Cotopaxi Ecuador 2 instruments Oct 2007 and 2010
Galeras Colombia 3 instruments Nov 2007
Colima Mexico 4 instruments Dec 2007 and Feb 2011
Santa Ana El Salvador 2 instruments April 2008
San Miguel El Salvador 2 instruments April 2008
Fuego Guatemala 2 instruments April 2008
Santiaguito Guatemala 2 instruments April 2008
Turrialba Costa Rica 4 instruments April 2008
Volcano Italy 1 instrument May 2008
Etna Italy 2+2 instruments July 2008
Villarrica Chile 2 instruments March 2009
Nevado de Huila Colombia 2 instruments March 2009
Nevado de Ruiz Colombia 2 instruments Nov 2009
Llama Chile 3 instruments Jan 2009
Ejyafjallajokul Iceland 2 instrument May 2010
Conception Nicaragua 2 instruments Feb 2011
Mayon Philippines 2 instruments April 2011
Hekla Iceland 2 instruments July 2011
64 instruments installed on 24 volcanoes,
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Popocatépetl Colima
Santiaguito Fuego Telica
Concepción San Cristóbal
Masaya
Santa Ana San Miguel Arenal Turrialba
Nevado del Ruiz Nevado del Huila
Galeras Cotopaxi
Tungurahua Llaima
Villarica
Vulcano Stromboli Mount Etna
Nyiragongo Piton de la Fournaise
Harestua
Mayon
Hekla Eyjafjallajökull
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Total number of scans in the NOVAC database
About 2.2 million scans April 2012
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Average SO2 emission from NOVAC volcanoes (preliminary data, work in progress)
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Eruption of Santa Ana Volcano, El Salvador 1 October 2005
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Olmos et al, Pure and Applied Geophysics PAGEOPH, 64 (2007), 2489-2506.
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SO2 gas emission, Nevado del Ruiz Volcano, Colombia
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Future
DORSIVA
Instrument development 2002 – 2005
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Future
DORSIVA NOVAC
Instrument development Instrument implementation 2002 – 2005 2005 – 2010
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Future
DORSIVA NOVAC
Instrument development Instrument implementation Data exploitation 2002 – 2005 2005 – 2010 2010 -
Risk assessment
Geophysical research
Environmental impact
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Future
DORSIVA NOVAC
Instrument development Instrument implementation Data exploitation 2002 – 2005 2005 – 2010 2010 -
Risk assessment
Geophysical research
Support existing network Maintain archive, GEO Supply instruments Provide platform
Volcanology Atmospheric chemistry Environmental impact Instrument development
Volcano risk assessment Climate change modelling Satellite validation Volcanic ash advisory
Networking Research Data exploitation
Environmental impact
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Thank you for your attention!