Hydrogeochemical temporal variations related to the recent volcanic eruption at the Cumbre Vieja Volcano, La Palma, Canary Islands

Amonte, Cecilia; Melián, Gladys V.; Asensio‐Ramos, María; Pérez, Nemesio M.; Padrón, Eleazar; Hernández, Pedro A.; D’Auria, Luca

doi:10.3389/feart.2022.1003890

Cited by 10 publications

(6 citation statements)

References 64 publications

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“…They also identified gas emissions (e.g., Helium and carbon dioxide) associated with such seismic swarms and explained these activities as a refilling of a deep magmatic chamber. Variations of isotopic composition and gases in groundwater before the 2021 eruption synchronously with seismic swarms have been reported by Amonte et al [11]. The presence of a deep chamber as well as a possibly complex system of dikes has been confirmed by Di Paolo et al [12], which made a magnetotelluric investigation of La Palma Island, providing an interesting resistivity map of the lithosphere.…”

Section: Brief Overview Of Previous Studies About La Palma Volcano Er...mentioning

confidence: 68%

Atmospheric and Ionospheric Effects of La Palma Volcano 2021 Eruption

et al. 2023

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On 19 September 2021, La Palma volcano (Canarias Archipelagos) started an eruption that persisted until 13 December 2021. Despite the Volcano Explosive Index (VEI) being estimated equal to 3, corresponding to not so powerful eruption, the long eruption activity posed much scientific interest in this natural hazard event. In this paper, we searched for possible effects of this eruption on the atmosphere and ionosphere, investigating the climatological archive and Swarm magnetic satellite data. In particular, we explored Aerosol, Sulphur Dioxide and Carbon Monoxide concentrations in the atmosphere identifying both the direct emissions from the volcano as well as the plume that drifted toward West-South-West and was reinforced during the eruption period. The vertical profile of temperature from the Saber satellite was analysed to search for the possible presence of acoustic gravity waves induced by volcanic activity. Compared with the year before without eruption in the areas, a lot of Saber profiles present an Energy Potential very much higher than the previous year, proposing the presence of Acoustic Gravity Waves (AGW) induced by volcano eruption activity. We also identified Swarm magnetic disturbances on the day of the eruption and in November. The mechanism of coupling could be different for the latter one, as there is no evidence for AGW. They may be due to a more complex of physical and chemical alterations that propagate from the lower atmosphere to the upper one into the ionosphere.

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Section: Brief Overview Of Previous Studies About La Palma Volcano Er...mentioning

confidence: 68%

Atmospheric and Ionospheric Effects of La Palma Volcano 2021 Eruption

et al. 2023

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“…Furthermore, the combination of a fractured crust and continuous 3 He degassing maintained a low magmatic volatile pressure, delaying the eruption. A week before the eruption, ground deformation reached its maximum of approximately 20 cm, and the seismicity became intense and shallower, indicating the rapid magma movement toward the surface (Amonte et al, 2022;DAuria et al, 2022).…”

Section: Geological Settingmentioning

confidence: 99%

Insights into fluid migration during the 2021 La Palma eruption using seismic noise interferometry

Carvalho,

Silveira,

Mendes

et al. 2024

Front. Earth Sci.

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Ambient noise correlation analyses are largely used to monitor temporal medium changes generally associated with stress field variations and/or fluid movement. Here, we analyze the 2021 eruption of La Palma, the most active island in the Canary archipelago, to study its effects on the structure in a post-eruptive stage. To date, most of the studies, whether in volcanic environments or other geological systems, focus on determining seismic velocity changes that can be associated with precursory signals. In our study, we are interested in localizing the medium changes that permit constraining the depth of the most affected structure and suggesting possible mechanisms capable of inducing such alterations. The auto- and cross-correlation functions were computed using the phase cross-correlation strategy. The correlations were linearly stacked using a 3-day sliding window. The combination of these two approaches proved to render the best results. The analysis of 3 years of data resulted in the detection of occasional decorrelation before the eruption, followed by a well-defined decoherence period after the eruption. In addition, the relationship between the waveform correlation and lag time, using autocorrelations from before and after the eruption, permits identifying phase shifts and waveform distortion, which are sensitive to different parameters and, thus, have great importance in inferring the possible mechanism. Phase shifts occur when there is only velocity change without changing the structure, whereas waveform distortion is caused by a structural (geological) change. We also inferred the depths at which the most significant medium alterations occur. We observed that the decorrelation occurs at lag times corresponding to changes localized in depth. The surface structure appears to not have undergone significant medium changes for depths until approximately 8 km, either before or after the eruption.

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“…In particular, we remark on the importance of repeated magmatic intrusion episodes beneath the crust (D'Auria et al., 2022; Klügel et al., 2000, 2005; Torres‐González et al., 2020). Besides, it can also aid the interpretation of the precursory geophysical and geochemical signals for improving the volcanic early warning in these geodynamic contexts (Padrón et al., 2022) as well as for a better understanding of syn‐eruptive changes (Amonte et al., 2022; D'Auria et al., 2022; Del Fresno et al., 2023).…”

Section: Discussionmentioning

confidence: 99%

Evidence of a Low‐Velocity Zone in the Upper Mantle Beneath Cumbre Vieja Volcano (Canary Islands) Through Receiver Functions Analysis

Ortega‐Ramos,

D'Auria,

Granja‐Bruña

et al. 2024

Geophysical Research Letters

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Oceanic volcanic islands have a complex internal structure due to their geological evolution. La Palma is the second youngest in the Canary Islands. Historical eruptions occurred in the Cumbre Vieja (CV) volcanic system, including the last 2021 Tajogaite eruption. The seismicity before, during, and after the Tajogaite eruption provides valuable information for a better understanding of deep volcanic processes. We applied the receiver function technique to image the crustal and upper mantle structures beneath the CV volcanic complex. We investigated the first 50 km of the lithosphere, identifying various seismic discontinuities. After a thin layer of recent volcanic rocks, we found a layer corresponding to the old oceanic crust. Beneath the Moho, we found a significant decrease in the seismic velocities until about 37 km of depth. This low‐velocity layer corresponds to a zone of partial melting with interconnected magmatic chambers that feed the volcanic activity in CV.

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Hydrogeochemical temporal variations related to the recent volcanic eruption at the Cumbre Vieja Volcano, La Palma, Canary Islands

Cited by 10 publications

References 64 publications

Atmospheric and Ionospheric Effects of La Palma Volcano 2021 Eruption

Atmospheric and Ionospheric Effects of La Palma Volcano 2021 Eruption

Insights into fluid migration during the 2021 La Palma eruption using seismic noise interferometry

Evidence of a Low‐Velocity Zone in the Upper Mantle Beneath Cumbre Vieja Volcano (Canary Islands) Through Receiver Functions Analysis

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