Ilanko, T. orcid.org/0000-0001-6535-1117, Pering, T. orcid.org/0000-0001-6028-308X, Wilkes, T. orcid.org/0000-0002-3448-6067 et al. (9 more authors) (2019) Degassing at Sabancaya volcano measured by UV cameras and the NOVAC network. Volcanica, 2 (2). pp. 239-252. ISSN 2610-3540
Abstract
We used low-cost Raspberry Pi ultraviolet (UV) cameras to measure sulphur dioxide (SO2) fluxes from Sabancaya volcano, Peru, during eruptive activity on 27 April 2018. Light dilution corrections were made by operating instruments at two distances simultaneously. Estimated SO2 fluxes of 27.1 kgs-1 are higher than previously reported, likely due to the current eruptive episode (ongoing since November 2016). Each eruptive event included frequent (2–3 per minute), ash-rich emissions, forming gas pulses with masses of 3.0–8.2 tonnes SO2. Sustained degassing and lack of overpressure suggest open-vent activity. Mean fluxes are consistent with those measured by a permanent NOVAC station (25.9 kgs-1) located under the plume, with remaining differences likely due to windspeed estimates and sampling rate. Our work highlights the importance of accurate light dilution and windspeed modelling in SO2 retrievals and suggests that co-location of UV cameras with permanent scanning spectrometers may be valuable in providing accurate windspeeds.
Metadata
Item Type: | Article |
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Authors/Creators: |
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Copyright, Publisher and Additional Information: | © The Author(s) 2019. This article is distributed under the terms of theCreative Commons Attribution 4.0 International License, http://creativecommons.org/licenses/by/4.0/ which permits unrestricted use, distribution, and reproduction in any medium, provided you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. |
Keywords: | Sulfur dioxide; PiCam; UV camera; NOVAC; DOAS; Sabancaya |
Dates: |
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Institution: | The University of Sheffield |
Academic Units: | The University of Sheffield > Faculty of Social Sciences (Sheffield) > Department of Geography (Sheffield) |
Funding Information: | Funder Grant number ROYAL SOCIETY RG170226 COMMONWEALTH SCHOLARSHIP COMMISSION NZRF-2017-308 |
Depositing User: | Symplectic Sheffield |
Date Deposited: | 13 Dec 2019 11:31 |
Last Modified: | 13 Dec 2019 19:47 |
Status: | Published |
Publisher: | Presse universitaires de Strasbourg |
Refereed: | Yes |
Identification Number: | 10.30909/vol.02.02.239252 |
Open Archives Initiative ID (OAI ID): | oai:eprints.whiterose.ac.uk:154245 |