Noble gas signals in corals predict submarine volcanic eruptions

Álvarez-Valero, Antonio M.; Burgess, R.; Récio, Clemente; Matos, V. de; Sánchez-Guillamón, Olga; Gómez-Ballesteros, M.; Recio, Guillermo; Fraile-Nuez, E.; Sumino, Hirochika; Flores, José Abel; Ban, Masao; Geyer, Adelina; Bárcena, María Ángeles; Borrajo, Javier; Compaña, J.M.

doi:10.1016/j.chemgeo.2017.05.013

Cited by 19 publications

(10 citation statements)

References 49 publications

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“…On one of the world's youngest volcanic islands created by an eruption of a submarine volcano (December 2014 into early 2015) in Tonga (Garvin et al, 2018), scientists have found signs of life just 4 years later, nurturing flowering plants. As an additional example, Álvarez-Valero et al (2018) described the immediate colonization of black corals on the basanites just erupted during the Tagoro volcano (Canary Islands) submarine event occurred in October 2011. In general however, the existence of pyroclastic cones may be extremely short, because after the cessation of the volcanic processes the parts emerging above sea level are subjected to rapid tidal and wave-current erosion, resulting in formation of shoals (Schmidt and Schmincke, 2002).…”

Section: Discussionmentioning

confidence: 99%

Unraveling Past Submarine Eruptions by Dating Lapilli Tuff-Encrusting Coralligenous (Actea Volcano, NW Sicilian Channel)

et al. 2021

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The dating of young submarine volcanic eruptions, with their potential generation of tsunamigenic waves, is essential for a reliable hazard assessment. This is particularly relevant in highly populated coastal areas. The scarce knowledge of the underwater environment makes however, this reconstruction challenging. Our study is focused on the NW sector of the Sicilian Channel, where several small- and medium-size volcanic edifices are present. The only documented Surtseyan-type eruption occurred in A.D. 1831, forming the ephemeral Ferdinandea Island. Late Pleistocene to mid-Holocene eruptions have been up to now only hypothesized, and based solely on indirect data. Here we present the first radiocarbon dates of a coralligenous bioconstruction sampled at 34 m water depth from the summit of the Actea volcano, grown up progressively (up to nowadays) on a lapilli tuff deposit. Actea volcano is a recently discovered pyroclastic cone located at only four nautical miles off the SW coast of Sicily. The oldest age of the bioconstructions that started to encrustate the shallow water pyroclastics shortly after their emplacement (7,387 ± 175 cal years B.P.) represents a terminus ante quem, thus testifying a mid-Holocene submarine eruption in this sector of the Sicilian Channel. This method may be effectively used to bridge the gap between historical accounts and the geological record and thus may contribute to a better volcanic hazard assessment of submarine eruption and related phenomena such as tsunamis.

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Section: Discussionmentioning

confidence: 99%

Unraveling Past Submarine Eruptions by Dating Lapilli Tuff-Encrusting Coralligenous (Actea Volcano, NW Sicilian Channel)

et al. 2021

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“…The formation of the Tagoro volcano complex (TVC) included extrusion of magmatic material and the formation of new hard bottoms, as well as changes in the physical-chemical characteristics of water masses in the area [6,10,26,27]. This eruptive process locally impacted pre-existing habitats through burial, mainly those conformed by antipatharians (Stichopathes, Antipathes, and Tanacetipathes), which when detected were considered survivors of the eruption and the water column anomalies [37]. Black corals grow at relatively slow rates (maximum longevities ranging from decades to millennia), with long life spans and older age of maturity [38]; extended longevity of some detected individuals may represent an indicator of resilience to environmental changes, such as the Tagoro eruption is in this case.…”

Section: Discussionmentioning

confidence: 99%

First Macro-Colonizers and Survivors Around Tagoro Submarine Volcano, Canary Islands, Spain

et al. 2019

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Tagoro, the youngest submarine volcano of the Canary Islands, erupted in 2011 South of El Hierro Island. Pre-existing sea floor and inhabiting biological communities were buried by the newly erupted material, promoting the appearance of new habitats. The present study pursues to describe the first metazoans colonizing different new habitats formed during the eruption and to create precedent on this field. Through dredge and remote operated vehicle samplings, five main habitat types have been detected based on the substrate type and burial status after the eruption. Inside the Tagoro volcanic complex (TVC), two new habitats are located in and around the summit and main craters—hydrothermal vents with bacterial mats and sulfurous-like fields mainly colonized by small hydrozoan colonies. Two other habitats are located downslope the TVC; new hard substrate and new mixed substrate, holding the highest biodiversity of the TVC, especially at the mixed bottoms with annelids (Chloeia cf. venusta), arthropods (Monodaeus couchii and Alpheus sp.), cnidarians (Sertularella cf. tenella), and molluscs (Neopycnodonte cochlear) as the first colonizers. An impact evaluation was done comparing the communities of those habitats with the complex and well-established community described at the stable hard substrate outside the TVC, which is constituted of highly abundant hydrozoans (Aglaophenia sp.), antipatharians (Stichopates setacea and Antipathes furcata), and colonizing epibionts (e.g., Neopycnodonte cochlear). Three years after the eruption, species numbers at Tagoro were still low compared to those occurring at similar depths outside the TVC. The first dominant species at the TVC included a large proportion of common suspension feeders of the circalittoral and bathyal hard bottoms of the area, which could have exploited the uncolonized hard bottoms and the post eruptive fertilization of water masses.

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“…It has been reported that the 2011 eruption of El Hierro submarine volcano started release of noble gases from depth (i.e. eruption's triggering) several weeks before the beginning of the seismic activity (Padrón et al, 2013;Álvarez-Valero et al, 2018). In addition, the studies of the syn-caldera eruption stages are required to understand the possible coexistence of contemporary open-and closed-system reservoirs at different depths for an accurate assessment of future eruptions.…”

Section: Implications For Hazard Assessment and Eruption Forecastingmentioning

confidence: 99%

δD and δ18O variations of the magmatic system beneath Deception Island volcano (Antarctica): Implications for magma ascent and eruption forecasting

Álvarez-Valero

Gisbert²,

Aulinas

et al. 2020

Chemical Geology

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Noble gas signals in corals predict submarine volcanic eruptions

Cited by 19 publications

References 49 publications

Unraveling Past Submarine Eruptions by Dating Lapilli Tuff-Encrusting Coralligenous (Actea Volcano, NW Sicilian Channel)

Unraveling Past Submarine Eruptions by Dating Lapilli Tuff-Encrusting Coralligenous (Actea Volcano, NW Sicilian Channel)

First Macro-Colonizers and Survivors Around Tagoro Submarine Volcano, Canary Islands, Spain

δD and δ18O variations of the magmatic system beneath Deception Island volcano (Antarctica): Implications for magma ascent and eruption forecasting

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