Diffuse volcanic gas emission and thermal energy release from the summit crater of Pico do Fogo, Cape Verde

Dionis, Samara; Melián, Gladys V.; Rodríguez, Fátima; Hernández, Pedro A.; Padrón, Eleazar; Pérez, Nemesio M.; Barrancos, José; Padilla, Germán D.; Sumino, Hirochika; Fernandes, Paulo M.; Bandomo, Zuleyka; Silva, Sónia; Pereira, José Manuel; Semedo, Helio

doi:10.1007/s00445-014-0897-4

Cited by 30 publications

(23 citation statements)

References 43 publications

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“…Fogo volcano and the fumaroles located within the summit crater of Pico do Fogo (Figure 1c) [40][41][42]). The 2014-2015 eruption was jointly monitored by researchers from the University of Cape Verde (UNICV) and from INVOLCAN directly in field, and remotely by the Istituto Nazionale di Geofisica e Vulcanologia-Osservatorio Etneo (INGV-OE) of Italy through satellite images [30,43].…”

Section: Methodsmentioning

confidence: 99%

Satellite and Ground Remote Sensing Techniques to Trace the Hidden Growth of a Lava Flow Field: The 2014–2015 Effusive Eruption at Fogo Volcano (Cape Verde)

et al. 2018

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Fogo volcano erupted in 2014-2015 producing an extensive lava flow field in the summit caldera that destroyed two villages, Portela and Bangaeira. The eruption started with powerful explosive activity, lava fountains, and a substantial ash column accompanying the opening of an eruptive fissure. Lava flows spreading from the base of the eruptive fissure produced three arterial lava flows. By a week after the start of the eruption, a master lava tube had already developed within the eruptive fissure and along the arterial flow. In this paper, we analyze the emplacement processes based on observations carried out directly on the lava flow field, remote sensing measurements carried out with a thermal camera, SO 2 fluxes, and satellite images, to unravel the key factors leading to the development of lava tubes. These were responsible for the rapid expansion of lava for thẽ 7.9 km length of the flow field, as well as the destruction of the Portela and Bangaeira villages. The key factors leading to the development of tubes were the low topography and the steady magma supply rate along the arterial lava flow. Comparing time-averaged discharge rates (TADR) obtained from satellite and Supply Rate (SR) derived from SO 2 flux data, we estimate the amount and timing of the lava flow field endogenous growth, with the aim of developing a tool that could be used for hazard assessment and risk mitigation at this and other volcanoes.

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Section: Methodsmentioning

confidence: 99%

Satellite and Ground Remote Sensing Techniques to Trace the Hidden Growth of a Lava Flow Field: The 2014–2015 Effusive Eruption at Fogo Volcano (Cape Verde)

et al. 2018

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“…The Fogo volcanic cone is truncated at ~1700 m above sea level (asl) by the Cha das Caldeiras summit caldera, inside which is the cone of Pico do Fogo that rises up to 2928 m asl. During the last five centuries, around 27 eruptions in the caldera have been reported with a mean interval of about 20 years [ Day et al ., ; Dionis et al ., ]. Eruptive activity occurring after the eighteenth century took place from ~ north‐south trending eruptive fissures crossing the north and south bases of Pico do Fogo, related to the east‐west spreading of the volcanic edifice and to the eastward sliding of the collapse scar and produced lava flows reaching the east coast [ Texier‐Teixeira et al ., ].…”

Section: Geological Setting and Eruptive History Of Fogomentioning

confidence: 99%

Lava flow hazard modeling during the 2014–2015 Fogo eruption, Cape Verde

et al. 2016

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Satellite remote sensing techniques and lava flow forecasting models have been combined to enable a rapid response during effusive crises at poorly monitored volcanoes. Here we used the HOTSAT satellite thermal monitoring system and the MAGFLOW lava flow emplacement model to forecast lava flow hazards during the 2014–2015 Fogo eruption. In many ways this was one of the major effusive eruption crises of recent years, since the lava flows actually invaded populated areas. Combining satellite data and modeling allowed mapping of the probable evolution of lava flow fields while the eruption was ongoing and rapidly gaining as much relevant information as possible. HOTSAT was used to promptly analyze MODIS and SEVIRI data to output hot spot location, lava thermal flux, and effusion rate estimation. This output was used to drive the MAGFLOW simulations of lava flow paths and to continuously update flow simulations. We also show how Landsat 8 OLI and EO‐1 ALI images complement the field observations for tracking the flow front position through time and adding considerable data on lava flow advancement to validate the results of numerical simulations. The integration of satellite data and modeling offers great promise in providing a unified and efficient system for global assessment and real‐time response to effusive eruptions, including (i) the current state of the effusive activity, (ii) the probable evolution of the lava flow field, and (iii) the potential impact of lava flows.

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“…Diffuse soil degassing is an important component of the gas budget of an active volcano [ Allard et al , ; Chiodini et al , ; Diliberto et al , ; Granieri et al , ; Dionis et al , ]. The low solubility of carbon dioxide (CO 2 ) in magma and the high mobility of exsolved gases allow tracking magma transfer [ Giammanco et al , , ; Papale , ; Granieri et al , ; Papale et al , ].…”

Section: Introductionmentioning

confidence: 99%

New perspectives on volcano monitoring in a tropical environment: Continuous measurements of soil CO₂ flux at Piton de la Fournaise (La Réunion Island, France)

Boudoire

Muro

Liuzzo

et al. 2017

Geophysical Research Letters

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Detecting renewal of volcanic activity is a challenging task and even more difficult in tropical settings. Continuous measurements of soil CO2 flux were carried out at the Piton de la Fournaise volcano during 2013–2016. Since this site is in the tropics, periods of heavy rainfall are in the norm. Measurements covered volcanic unrest after a hiatus of 3.5 years. We find that while temperature has the strongest effect, extreme rainfall causes short‐term noise. When corrected and filtered from the environmental influence, soil CO2 time series permit to detect a major deep magmatic event during March–April 2014, 3 months before the first eruption of the new activity phase. Correlation with geophysical data sets allows timing of further stages of upward fluid ascent. Our study validates soil CO2 flux monitoring in tropical environments as a valuable tool to monitor magma transfer and to enhance understanding of volcano unrest down to the lithospheric mantle.

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Diffuse volcanic gas emission and thermal energy release from the summit crater of Pico do Fogo, Cape Verde

Cited by 30 publications

References 43 publications

Satellite and Ground Remote Sensing Techniques to Trace the Hidden Growth of a Lava Flow Field: The 2014–2015 Effusive Eruption at Fogo Volcano (Cape Verde)

Satellite and Ground Remote Sensing Techniques to Trace the Hidden Growth of a Lava Flow Field: The 2014–2015 Effusive Eruption at Fogo Volcano (Cape Verde)

Lava flow hazard modeling during the 2014–2015 Fogo eruption, Cape Verde

New perspectives on volcano monitoring in a tropical environment: Continuous measurements of soil CO₂ flux at Piton de la Fournaise (La Réunion Island, France)

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Diffuse volcanic gas emission and thermal energy release from the summit crater of Pico do Fogo, Cape Verde

Cited by 30 publications

References 43 publications

Satellite and Ground Remote Sensing Techniques to Trace the Hidden Growth of a Lava Flow Field: The 2014–2015 Effusive Eruption at Fogo Volcano (Cape Verde)

Satellite and Ground Remote Sensing Techniques to Trace the Hidden Growth of a Lava Flow Field: The 2014–2015 Effusive Eruption at Fogo Volcano (Cape Verde)

Lava flow hazard modeling during the 2014–2015 Fogo eruption, Cape Verde

New perspectives on volcano monitoring in a tropical environment: Continuous measurements of soil CO2 flux at Piton de la Fournaise (La Réunion Island, France)

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Product

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New perspectives on volcano monitoring in a tropical environment: Continuous measurements of soil CO₂ flux at Piton de la Fournaise (La Réunion Island, France)