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Full-Text Articles in Geological Engineering
Out Of The Blue: Volcanic So2 Emissions During The 2021–2022 Eruptions Of Hunga Tonga—Hunga Ha’Apai (Tonga), S. A. Carn, N. A. Krotkov, B. L. Fisher, C. Li
Out Of The Blue: Volcanic So2 Emissions During The 2021–2022 Eruptions Of Hunga Tonga—Hunga Ha’Apai (Tonga), S. A. Carn, N. A. Krotkov, B. L. Fisher, C. Li
Michigan Tech Publications
Most volcanism on Earth is submarine, but volcanic gas emissions by submarine eruptions are rarely observed and hence largely unquantified. On 15 January 2022 a submarine eruption of Hunga Tonga-Hunga Ha’apai (HTHH) volcano (Tonga) generated an explosion of historic magnitude, and was preceded by ∼1 month of Surtseyan eruptive activity and two precursory explosive eruptions. We present an analysis of ultraviolet (UV) satellite measurements of volcanic sulfur dioxide (SO2) between December 2021 and the climactic 15 January 2022 eruption, comprising an unprecedented record of Surtseyan eruptive emissions. UV measurements from the Ozone Monitoring Instrument (OMI) on NASA’s Aura satellite, the …
Lava Volume From Remote Sensing Data: Comparisons With Reverse Petrological Approaches For Two Types Of Effusive Eruption, Pauline Verdurme, Simon Carn, Andrew J.L. Harris, Diego Coppola, Andrea Di Muro, Santiago Arellano, Lucia Gurioli
Lava Volume From Remote Sensing Data: Comparisons With Reverse Petrological Approaches For Two Types Of Effusive Eruption, Pauline Verdurme, Simon Carn, Andrew J.L. Harris, Diego Coppola, Andrea Di Muro, Santiago Arellano, Lucia Gurioli
Michigan Tech Publications
Five effusive eruptions of Piton de la Fournaise (La Réunion) are analyzed to investigate temporal trends of erupted mass and sulfur dioxide (SO2) emissions. Daily SO2 emissions are acquired from three ultraviolet (UV) satellite instruments (the Ozone Monitoring Instrument (OMI), the Ozone Mapping and Profiler Suite (OMPS), and the Tropospheric Monitoring Instrument (TROPOMI)) and an array of ground-based UV spectrometers (Network for Observation of Volcanic and Atmospheric Change (NOVAC)). Time-averaged lava discharge rates (TADRs) are obtained from two automatic satellite-based hot spot detection systems: MIROVA and MODVOLC. Assuming that the lava volumes measured in the field are accurate, the MIROVA …