Protocols for UV camera volcanic SO2 measurements

Alessandro Aiuppa, Giancarlo Tamburello, Euripides P. Kantzas, Robert G. Bryant, Alessandro Aiuppa, Mcgonigle

Risultato della ricerca: Articlepeer review

65 Citazioni (Scopus)

Abstract

Ultraviolet camera technology offers considerable promise for enabling 1 Hz timescale acquisitions ofvolcanic degassing phenomena, providing two orders of magnitude improvements on sampling frequenciesfrom conventionally applied scanning spectrometer systems. This could, for instance enable unprecedentedinsights into rapid processes, such as strombolian explosions, and non-aliased corroboration with volcanogeophysical data. The uptake of this technology has involved disparate methodological approaches, hitherto.As a means of expediting the further proliferation of such systems, we here study these diverse protocols,with the aim of suggesting those we consider optimal. In particular we cover: choice and set up of hardware,calibration for vignetting and for absolute concentrations using quartz SO2 cells, the retrieval algorithm andwhether one or two filters, or indeed cameras, are necessary. This work also involves direct intercomparisonswith narrowband observations obtained with a scanning spectrometer system, employing a differentialoptical absorption spectroscopic evaluation routine, as a means of methodological validation.
Lingua originaleEnglish
pagine (da-a)55-60
Numero di pagine6
RivistaJournal of Volcanology and Geothermal Research
Volume194
Stato di pubblicazionePublished - 2010

All Science Journal Classification (ASJC) codes

  • Geophysics
  • Geochemistry and Petrology

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