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| Titel |
A rapid deployment instrument network for temporarily monitoring volcanic SO2 emissions – a case study from Telica volcano |
| VerfasserIn |
V. Conde, D. Nilsson, B. Galle, R. Cartagena, A. Muñoz |
| Medientyp |
Artikel
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| Sprache |
Englisch
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| ISSN |
2193-0856
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| Digitales Dokument |
URL |
| Erschienen |
In: Geoscientific Instrumentation, Methods and Data Systems ; 3, no. 2 ; Nr. 3, no. 2 (2014-08-26), S.127-134 |
| Datensatznummer |
250115217
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| Publikation (Nr.) |
 copernicus.org/gi-3-127-2014.pdf |
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| Zusammenfassung |
| Volcanic gas emissions play a crucial role in describing geophysical
processes; hence, measurements of magmatic gases such as SO2 can be
used as tracers prior to and during volcanic crises. Different measurement
techniques based on optical spectroscopy have provided valuable information
when assessing volcanic crises. This paper describes the design and
implementation of a network of spectroscopic instruments based on
differential optical absorption spectroscopy (DOAS) for remote sensing of
volcanic SO2 emissions, which is robust, portable and can be deployed
in relatively short time. The setup allows the processing of raw data in
situ even in remote areas with limited accessibility, and delivers
pre-processed data to end users in near real time, even during periods of
volcanic crisis, via a satellite link. In addition, the hardware can be used
to conduct short-term studies of volcanic plumes in remote areas. We
describe here tests of the network at Telica, an active volcano located in
western Nicaragua, during three different measurement periods, including an
eruptive crisis. The tests produced what is so far the largest data set of
continuous SO2 flux measurements at this volcano. The measurements show
that, during the period 2010–2013, the flux averages approximately 100 tons
per day (t day−1). |
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