HR: 0800h
AN: V41A-02    [Abstracts]
TI: NOVAC Scanning Instruments at San Cristóbal and Masaya Volcanoes (Nicaragua): Installation and First Results
AU: * Rivera, C
EM: claudia.rivera@chalmers.se
AF: Department of Radio and Space Science, Chalmers University of Technology, Hörsalsvägen 11, Göteborg, 41296, Sweden
AU: Morales, A
EM: allan.morales@gf.ineter.gob.ni
AF: Instituto Nicaragüense de Estudios Territoriales (INETER), Frente a la Policlínica Oriental, Managua, 2110, Nicaragua
AU: Gutiérrez, L
EM: ligdamis.gutierrez@gf.ineter.gob.ni
AF: Instituto Nicaragüense de Estudios Territoriales (INETER), Frente a la Policlínica Oriental, Managua, 2110, Nicaragua
AU: Herrera, M
EM: martha.herrera@gf.ineter.gob.ni
AF: Instituto Nicaragüense de Estudios Territoriales (INETER), Frente a la Policlínica Oriental, Managua, 2110, Nicaragua
AU: Johansson, M
EM: mattias.johansson@chalmers.se
AF: Department of Radio and Space Science, Chalmers University of Technology, Hörsalsvägen 11, Göteborg, 41296, Sweden
AU: Zhang, Y
EM: zhangy@chalmers.se
AF: Department of Radio and Space Science, Chalmers University of Technology, Hörsalsvägen 11, Göteborg, 41296, Sweden
AU: Galle, B
EM: bo.galle@rss.chalmers.se
AF: Department of Radio and Space Science, Chalmers University of Technology, Hörsalsvägen 11, Göteborg, 41296, Sweden
AU: Strauch, W
EM: wilfried.strauch@gf.ineter.gob.ni
AF: Instituto Nicaragüense de Estudios Territoriales (INETER), Frente a la Policlínica Oriental, Managua, 2110, Nicaragua
AB: Volcanic emissions monitoring during volcanic unrest, especially at eruptive and intense passive degassing stages can give good indication of the pattern of activity of a volcano. The Network for Observation of Volcanic and Atmospheric Change (NOVAC) project encompasses a global network of stations to monitor volcanic gas emissions using Scanning Dual-beam miniature - Differential Optical Absorption Spectrometer (Mini-DOAS) instruments. This paper describes the installation of Scanning-DOAS instruments at San Cristóbal and Masaya volcanoes, as part of the NOVAC project. San Cristóbal and Masaya volcanoes form part of the Central American volcanic arc and both present permanent degassing conditions. In November 2006, three Scanning-DOAS instruments were installed at San Cristóbal volcano. The instruments scan over a 180° vertical plane, traversing the plume downwind the source and were placed perpendicularly to the predominant plume propagation direction. Additionally two Scanning-DOAS instruments were installed in the caldera of Masaya volcano during April 2007. A detailed description of the installation of Scanning-DOAS instruments at San Cristóbal and Masaya volcanoes and first results are further discussed.
DE: 8419 Volcano monitoring (7280)
DE: 8430 Volcanic gases
DE: 8485 Remote sensing of volcanoes
DE: 8488 Volcanic hazards and risks
DE: 8494 Instruments and techniques
SC: Volcanology, Geochemistry, and Petrology [V]
MN: 2007 Joint Assembly