Thomas Boulesteix

Instituto de Productos Naturales y Agrobiología

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Noémie Taquet

Universidad Nacional Autónoma de México

Robin Campion

Universidad Nacional Autónoma de México

A. Hildenbrand

Geosciences Paris Sud

D. Legrand

Universidad Nacional Autónoma de México

Alejandro Bezanilla

Universidad Nacional Autónoma de México

Michel Grutter

Universidad Nacional Autónoma de México

Wolfgang Stremme

Universidad Nacional Autónoma de México

Jesús Solé

Universidad Nacional Autónoma de México

Thomas Blumenstock

Karlsruhe Institute of Technology

Sébastien Valade

Universidad Nacional Autónoma de México

Cooperative Institutions

Universidad Nacional Autónoma de México

Centre National de la Recherche Scientifique

Consejo Superior de Investigaciones Científicas

Agencia Estatal de Meteorología

Instituto de Productos Naturales y Agrobiología

Université Paris Cité

Université Paris-Saclay

Université Paris-Sud

Geosciences Paris Sud

Universidad de La Laguna

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Ilmenites and their alteration products, sinkholes for uranium and radium in roll-front deposits after the example of South Tortkuduk (Kazakhstan)

Journal of Geochemical Exploration (2019)

Thomas Boulesteix ‪Michel Cathelineau Étienne Deloule Marc Brouand H. Toubon

Ilmenite

Radium

10.1016/j.gexplo.2019.106343

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Citations (13)

PROVENANCE OF LATE PALEOZOIC FINE SEDIMENT OF THE ANADARKO BASIN (OK) – EVIDENCES FROM K-AR GEOCHRONOLOGY AND REE SYSTEMATICS OF DETRITAL ILLITE

Abstracts with programs - Geological Society of America (2020)

Branimir Šegvić Giovanni Zanoni Hunter Green Thomas Boulesteix Jesús Solé

Geochronology

Illite

10.1130/abs/2020sc-343899

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Citations (1)

Breathing and Coughing: The Extraordinarily High Degassing of Popocatépetl Volcano Investigated With an SO2 Camera

Frontiers in Earth Science (2018)

Robin Campion Hugo Delgado Granados D. Legrand Noémie Taquet Thomas Boulesteix

How do lava domes release volcanic gases? Studying this problem is crucial to understand, and potentially anticipate, the generation of the sudden and dangerous explosive eruptions that frequently accompany dome extrusions. Since its awakening in 1994, Popocatépetl volcano has produced more than fifty lava domes and has been consistently among the strongest permanent emitters of volcanic gases. In this work, we have characterized the passive and explosive degassing between 2013 and 2016 at a high time resolution using an SO2 camera, to achieve a better understanding of the conduit processes. Our 4-year average SO2 flux is 45 kg/s, in line with the long-term average of the whole current eruptive period. We show that Popocatépetl volcano is essentially an open system and that passive degassing, i.e. degassing with no associated emission of lava or ash, dominates >95% of the time. This passive degassing is continuous and sustained, whether the crater contains a lava dome or not. It shows most of the time a strong periodic component, with a pseudo-period of ~5 minutes, and amplitudes of 30 to 60% of the average value. We could distinguish two types of explosions based on their SO2 flux patterns. The first type (E1) occurs in the middle of the normal passive degassing and is followed by a rapid return of the SO2 flux down to its pre-explosive level. The second type (E2), which corresponds to the strongest events, is anticipated by a rapid decrease of the SO2 flux to abnormally low values and is followed by a return to its normal values. The E2 explosions are probably caused by the accumulation of gas below a rapidly compacting permeable dome. We suggest that transient episodes of gravitational compaction of the usually permeable dome and the upper conduit is the only mechanism that is fast enough to explain the sharp decrease of the SO2 flux that anticipates the E2 explosions. Our model is potentially applicable to a large number of andesitic volcanoes that undergo passive degassing interspersed with short-lived explosions.

Lava dome

Volcanic Gases

10.3389/feart.2018.00163

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Citations (36)

Morpho-structural evolution of a volcanic island developed inside an active oceanic rift: S. Miguel Island (Terceira Rift, Azores)

Journal of Volcanology and Geothermal Research (2015)

A. Sibrant A. Hildenbrand F.O. Marques Benedikt Weiß Thomas Boulesteix

Mass wasting

Volcanic cone

10.1016/j.jvolgeores.2015.04.011

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Citations (61)

Impact of the 2021 La Palma volcanic eruption on air quality: Insights from a multidisciplinary approach

The Science of The Total Environment (2023)

C. Milford Carlos Torres Jon Vilches Ann-Kathrin Gossman Frederik Weis

The La Palma 2021 volcanic eruption was the first subaerial eruption in a 50-year period in the Canary Islands (Spain), emitting ~1.8 Tg of sulphur dioxide (SO2) into the troposphere over nearly 3 months (19 September-13 December 2021), exceeding the total anthropogenic SO2 emitted from the 27 European Union countries in 2019. We conducted a comprehensive evaluation of the impact of the 2021 volcanic eruption on air quality (SO2, PM10 and PM2.5 concentrations) utilising a multidisciplinary approach, combining ground and satellite-based measurements with height-resolved aerosol and meteorological information. High concentrations of SO2, PM10 and PM2.5 were observed in La Palma (hourly mean SO2 up to ~2600 μg m−3 and also sporadically at ~140 km distance on the island of Tenerife (> 7700 μg m−3) in the free troposphere. PM10 and PM2.5 daily mean concentrations in La Palma peaked at ~380 and 60 μg m−3. Volcanic aerosols and desert dust both impacted the lower troposphere in a similar height range (~ 0–6 km) during the eruption, providing a unique opportunity to study the combined effect of both natural phenomena. The impact of the 2021 volcanic eruption on SO2 and PM concentrations was strongly influenced by the magnitude of the volcanic emissions, the injection height, the vertical stratification of the atmosphere and its seasonal dynamics. Mean daily SO2 concentrations increased during the eruption, from 38 μg m−3 (Phase I) to 92 μg m−3 (Phase II), showing an opposite temporal trend to mean daily SO2 emissions, which decreased from 34 kt (Phase I) to 7 kt (Phase II). The results of this study are relevant for emergency preparedness in all international areas at risk of volcanic eruptions; a multidisciplinary approach is key to understand the processes by which volcanic eruptions affect air quality and to mitigate and minimise impacts on the population.

Vulcanian eruption

10.1016/j.scitotenv.2023.161652

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Citations (42)

Modulation of Popocatépetl’s activity by regional and worldwide earthquakes

Bulletin of Volcanology (2022)

Thomas Boulesteix D. Legrand Noémie Taquet Diego Coppola Marco Laiolo

Abstract Volcanoes switching from quiescence to eruption shortly after catastrophic earthquakes have raised interest for volcanic triggering and the influence of earthquakes on volcanic activity. Its influence on already active systems and especially at open-vent volcanoes is more difficult to apprehend. A number of recent observations suggest an influence of tectonic earthquakes on Popocatépetl’s activity, the importance of which remains unknown. To further investigate this, we introduce an index, based on the near-field concept, identifying the earthquakes with the highest potential to promote volcanic activity (hereafter termed “significant earthquakes”). The time series of significant earthquakes is compared with the intensity of the volcanic activity, as characterized by the number and energy of volcano-tectonic earthquakes, the number of dome extrusions, the intensity of thermal and degassing fluxes, and ash production. Three main periods with contrasting activity stand out showing that Popocatépetl presents intense activity when significant tectonic earthquakes are frequent. Enhanced extrusion apparently follows significant earthquakes quickly with pulses of dome extrusion that peak after 1.3 ± 0.3 years. Conversely, extrusive activity vanishes when significant seismicity disappears, as during the period 2003–2011, which coincides with a 12-year-long significant seismicity gap. Hence, we propose that the 1994–2022 open-vent activity at Popocatépetl is in part modulated by the repetitive occurrence of significant earthquakes that periodically promote volcanic activity.

Extrusive

10.1007/s00445-022-01584-2

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Citations (9)

Variability in the Gas Composition of the Popocatépetl Volcanic Plume

Frontiers in Earth Science (2019)

Noémie Taquet Wolfgang Stremme Michel Grutter Jorge L. Baylon Alejandro Bezanilla

Long term time series of volcanic plumes composition constitute valuable indicators of the evolution of the magmatic and volcanic systems. We present here a 4 years long time series of molecular ratios of HF/HCl, HCl/SO2 , SiF4 /SO2 , HF/SiF4 measured in the Popocat epetl 's volcanic plume using ground-based solar absorption FTIR spectroscopy. The instrument based in the NDACC (Network for the Detection of Atmospheric Composition Change) station of Altzomoni site, facing the Popocatepetl volcano, provides an unrivalled precision. The computed mean and standard deviation of the HF/HCl and HCl/SO2 ratios for this period were found to be 0.24±0.03 and 0.11±0.03, respectively. SiF4 was detected in three occasions and the SiF4 /SO2 ratios ranged between (1.9±0.5) x 10e−3 and (9.9±0.4) x 10e−3. The HBr/HCl and HBr/SO2 ratios remained below their detection limit (1.25 x 10e−4 and 1.25 x 10e−5, respectively), given that a part of the HBr has already been converted to other bromine species (e.g.: BrO, Br2 ) a few kilometers downwind of the crater. Combining our time-series with satellite SO2 fluxes and seismic data, we explain the significant long-term HCl/SO2 variations by changes in the conduit and edifice permeabilities, impacting the deep and shallow degassing processes. The high temporal resolution of the data also allows capturing the variation of the volcanic plume composition preceding and induced by a common moderate explosion at Popocatepetl volcano. We interpret the observed variations of the HCl/SO2 ratio during the explosion as a progressive decompression and release of the gas (Taquet et al. 2017) stored in the deep conduit. SiF4 /HCl versus HF/HCl is found to have a linear relation with a slope of -1/4 during the explosions, which implies a conservation of fluorine.

Volcanic Gases

Fumarole

Panache

10.3389/feart.2019.00114

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Citations (27)

Lava dome cycles reveal rise and fall of magma column at Popocatépetl volcano

Nature Communications (2023)

Sébastien Valade Diego Coppola Robin Campion Andreas Ley Thomas Boulesteix

Abstract Lava domes exhibit highly unpredictable and hazardous behavior, which is why imaging their morphological evolution to decipher the underlying governing mechanisms remains a major challenge. Using high-resolution satellite radar imagery enhanced with deep-learning, we image the repetitive dome construction-subsidence cycles at Popocatépetl volcano (Mexico) with very high temporal and spatial resolution. We show that these cycles resemble gas-driven rise and fall of the upper magma column, where buoyant bubble-rich magma is extruded from the conduit (in ~hours-days), and successively drained back (in ~days-months) as magma degasses and crystallizes. These cycles are superimposed on a progressive decadal crater deepening, accompanied by heat and gas flux decrease, which could be partially explained by gas depletion within the magma plumbing system. Results reinforce the idea that gas retention and escape from the magma column play a key role in the short- and long-term morphological evolution of low-viscosity lava domes and their associated hazards.

Lava dome

Dome (geology)

Phreatic eruption

Lateral eruption

10.1038/s41467-023-38386-9

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Citations (10)

Reappraisal of the GL‐O Reference Material for K‐Ar Dating: New Insight from Microanalysis, Single‐Grain and Milligram Ar Measurements

Geostandards and Geoanalytical Research (2019)

Thomas Boulesteix Jesús Solé Teresa Pi‐Puig ‪Michel Cathelineau

The homogeneity and Ar‐dating suitability of the GL‐O reference material were re‐evaluated to determine whether this material is sufficiently homogeneous to be suitable for the calibration of modern high sensitivity instruments. Based on new micro‐analyses and noble gas determinations, our contribution reveals several kinds of inhomogeneity at the grain scale: disparity in the glauconitisation among and within the pellets, variable occurrence of a phosphatic component within pellets (1% m / m on average), and rare occurrences of calcite and detrital grains. Measurements on test portions of ≤ 1 mg reflect such heterogeneity with variability in 40 Ar* content that exceeds analytical uncertainty, including a few highly anomalous values. The lesser evolved glauconite population yielded 40 Ar* contents ~ 15% lower than the value of 24.8 nl g −1 recommended by Odin et al . (1982, Numerical dating in stratigraphy. Wiley (Chichester, UK), 123–148). But the measured concentrations of 40 Ar* converge towards the aforementioned value as test portion mass increased to > 3 mg. A few rare 3 mg experiments still yielded 40 Ar* contents lower than the recommended value (down to 24.0 nl g −1 ), and we recommend using more conservative minimum masses of 5–10 mg. A further purification step for GL‐O or the intercalibration of its powder version could be considered to diminish the size of the test portions and the intensity of the measured signals.

Glauconite

10.1111/ggr.12306

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Citations (18)

K-Ar geochronology and trace-element geochemistry of 2M illite from upper Paleozoic shale of SW Laurentia – Insights into sediment origin and drainage pathways in the Anadarko Basin, USA

Palaeogeography Palaeoclimatology Palaeoecology (2021)

Branimir Šegvić Giovanni Zanoni Ömer Bozkaya Dustin E. Sweet Melanie A. Barnes

Illite

Authigenic

Laurentia

Detritus

10.1016/j.palaeo.2021.110486

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Citations (11)