A5087202100- Atmospheric and Environmental Gas Dynamics
- Geological and Tectonic Studies in Latin America
- Geological and Geochemical Analysis
- Geochemistry and Geologic Mapping
- earthquake and tectonic studies
- Geological and Geophysical Studies Worldwide
- CO2 Sequestration and Geologic Interactions
- Seismic Waves and Analysis
- Methane Hydrates and Related Phenomena
- Radioactivity and Radon Measurements
- Geology and Paleoclimatology Research
- Earthquake Detection and Analysis
- Seismology and Earthquake Studies
- Groundwater and Isotope Geochemistry
- Atmospheric Ozone and Climate
- Landslides and related hazards
- Hydrocarbon exploration and reservoir analysis
- Geotourism and Geoheritage Conservation
- Geophysical and Geoelectrical Methods
- Cryospheric studies and observations
- Geological and Geophysical Studies
- Air Quality Monitoring and Forecasting
- Odor and Emission Control Technologies
- Ocean Acidification Effects and Responses
- High-pressure geophysics and materials
Instituto Tecnológico y de Energías Renovables
2016-2025
Instituto Volcanológico de Canarias
2016-2025
Universidad de La Laguna
2024
German Cancer Research Center
2023
Heidelberg University
2023
Institute of Geosciences and Earth Resources
2023
Universidad Andrés Bello
2023
Texas A&M University
2023
Tenerife Island Energy Agency
2015-2022
Universidad Autónoma de Madrid
2019
Tajogaite cone in the Cumbre Vieja ridge (La Palma, Canary Islands) erupted between 19 September and 13 December 2021. The tephra lava sourced from newly formed fissure rapidly built a pyroclastic cone. During early days of eruption after several small-scale landslides, west flank edifice partially collapsed on 25 September, breaching emplacing prominent raft-bearing flow. Our research combines direct observations, digital elevation models, thermal visible imaging, textural compositional...
For the first time, we obtained high-resolution images of Earth's interior La Palma volcanic eruption that occurred in 2021 derived during eruptive process. We present evidence a rapid magmatic rise from base oceanic crust under island to produce an was active for 85 days. This is interpreted as very accelerated and energetic used data 11,349 earthquakes perform travel-time seismic tomography. high-precision earthquake relocations 3D distributions P S-wave velocities highlighting geometry...
How and why magmatic systems reactivate evolve is a critical question for monitoring hazard mitigation efforts during initial response ongoing volcanic crisis management. Here we report the first integrated petrological results interpretation provided to authorities eruption of Cumbre Vieja, La Palma, Canary Islands, Spain. The eruptive products comprised simultaneous Strombolian fountain-fed lava flows tephra fall from near-continuous plumes. From combined field, petrographic geochemical...
Identifying accurate topographic variations associated with volcanic eruptions plays a key role in obtaining information on eruptive parameters, volcano structure, input data for processes modelling, and civil protection recovery actions. The 2021 eruption of Cumbre Vieja is the largest event recorded history La Palma Island. Over course almost 3 months, produced profound morphological changes landscape affecting both natural anthropic environment over an area tens km
Magmatic carbon dioxide (CO2) degassing has been documented before the 31 March 2000 eruption of Usu volcano, Hokkaido, Japan. Six months eruption, an increase in CO2 flux was detected on summit caldera, from 120 (September 1998) to 340 metric tons per day 1999), followed by a sudden decrease 39 June 2000, 3 after eruption. The change and seismic observations suggests that advective processes controlled gas migration toward surface. at caldera could be due rapid release during ascending...
Research Article| May 01, 2013 Diffusive helium emissions as a precursory sign of volcanic unrest Eleazar Padrón; Padrón * 1Environmental Division, Instituto Tecnológico y de Energías Renovables, 38611 Granadilla Abona, Tenerife, Canary Islands, Spain2Instituto Volcanológico Canarias (INVOLCAN), 38400 Puerto la Cruz, Spain *E-mail: eleazar@iter.es. Search for other works by this author on: GSW Google Scholar Nemesio M. Pérez; Pérez Pedro A. Hernández; Hernández Hirochika Sumino; Sumino...
Abstract. Lava flow simulations help to better understand volcanic hazards and may assist emergency preparedness at active volcanoes. We demonstrate that Fogo Volcano, Cabo Verde, such can explain the 2014–2015 lava crisis therefore provide a valuable base prepare for next inevitable eruption. conducted topographic mapping in field satellite-based remote sensing analysis. produced first model of from combined terrestrial laser scanner (TLS) photogrammetric data. This high-resolution...
Abstract 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 MAGFLOW emplacement model forecast hazards 2014–2015 Fogo eruption. In many ways this was one of major eruption recent years, since flows actually invaded populated areas. Combining data modeling allowed mapping probable evolution fields while ongoing...
Abstract Alkaline mafic magmas forming intra-plate oceanic islands are believed to be strongly enriched in CO 2 due low-degree partial melting of mantle sources. However, until now, such enhancement has not been verified by measuring degassing during a subaerial eruption. Here, we provide evidence highly -rich gas emissions the 86-day 2021 Tajogaite eruption Cumbre Vieja volcano on La Palma Island, Canary archipelago. Our results reveal sustained high plume /SO ratios, which, when combined...
On Sept. 19th, 2021, the largest historical eruption on island of La Palma began, which had a significant scientific, social, and economic impact. The 2021 Tajogaite was characterised by short precursors, lasting only 8 days. seismicity started 11th with westward upward migration hypocenters. Permanent GNSS stations recording deformation 12th island's western side, reached more than 15 cm just before eruption. After onset, ground increased, reaching maximum 22nd showing nearly steady...
Research Article| March 01, 2011 Global CO2 emission from volcanic lakes Nemesio M. Pérez; Pérez * 1Environmental Division, Instituto Tecnológico y de Energías Renovables (ITER), 38611 Granadilla Abona, Tenerife, Canary Islands, Spain *E-mail: nperez@iter.es. Search for other works by this author on: GSW Google Scholar Pedro A. Hernández; Hernández German Padilla; Padilla Dácil Nolasco; Nolasco José Barrancos; Barrancos Gladys Melían; Melían Eleazar Padrón; Padrón Samara Dionis; Dionis David...
The purpose of this work is to gain insights into the 2011–2012 eruption El Hierro (Canary Islands) by mapping evolution seismic b-value. sequence offers a rather unique opportunity investigate process reawakening an oceanic intraplate volcano after long period repose. submarine volcanic event that took place about 2 km off southern coast Hierro. was accompanied intense swarm and surface manifestations activity. earthquake catalogue during unrest includes over 12 000 events, largest with...
On October 12, 2011, a submarine eruption began 2 km off the coast of La Restinga, south El Hierro Island. CO and H S soil efflux were continuously measured during period volcanic unrest by using accumulation chamber method at two different geochemical stations, HIE01 HIE07. Recorded effluxes showed precursory signals that preceded eruption. Beginning in late August, time series started increasing relatively constant rate over one month, reaching maximum 19 gm −2 d −1 week before onset The...
Abstract The study of geothermal systems is nowadays a topic great importance because the huge amount energy that could be converted in electricity for human consumption from such sources. Among various geophysical methods employed to reservoirs, magnetotelluric (MT) method capable reveal internal structures subsurface and interpret geological electrical resistivity. We present first 3D resistivity model La Palma (Canary archipelago, Spain) obtained dataset 44 broadband soundings distributed...
Abstract We report significant changes in the 3 He/ 4 He ratio measured at Dos Aguas CO 2 ‐rich cold mineral spring (La Palma, Canary Islands) that represent early precursory signals of 2021 Tajogaite eruption Cumbre Vieja volcano. Air‐corrected has an average value 9.80 R A last 30 years (1991–2021). Helium isotope ratios higher than were observed during period 2008–2013 suggesting input He‐rich less‐degassed magma beneath La Palma lithosphere. Magma ascended 2017–2018 toward another...
Abstract The explosive activity of the 2021 Tajogaite eruption eludes pigeonholing into well‐defined styles, with a variety pyroclast ejection modes occurring both alternately and simultaneously at multiple vents. Visually, we defined four endmembers activity, referred to as fountaining, spattering, ash‐poor jets ash‐rich jets. To capture physical parameters these activities, deployed camera array including one high‐speed three high‐definition cameras in two field campaigns. Transitions...
Abstract The simultaneous or sequential occurrence of several hazards—be they natural anthropogenic sources—can interact to produce unexpected compound hazards and impacts. Since success in responding volcanic crises is often conditional on accurate identification spatiotemporal patterns hazard prior an eruption, ignoring these interactions can lead a misrepresentation misinterpretation the risk and, during emergencies, ineffective management priorities. 2021 eruption Tajogaite volcano...
Diffuse emission of CO 2 , CH 4 and ³He was investigated in the summit crater Teide volcano, Tenerife, Canary Islands. The results indicate that volcano releases abundant not only from its active crater, but also flanks as diffuse soil emanations. spatial distribution these emanations correlates quite closely with geothermal anomalies manifestations. Our flux measurements a total output 380 ton·day −1 1.6 on·day by degassing. From ³He/CO ratios we estimate 0.052 mol·year . Isotopic analysis...
Abstract Soil gas Radon ( 222 Rn) and Thoron 220 activities have been continuously measured during the period of recent volcanic unrest that occurred at El Hierro, Canary Islands, two different monitoring stations, namely HIE02 HIE03. Significant increases in soil Rn activity Rn/ ratio from were observed both stations prior to 2011‐2012 submarine eruption off coast showing highest before onset occurrence strongest seismic event (M = 4.6). Statistical analysis showed long‐term temporal trend...
Abstract We report herein the results of extensive diffuse CO 2 emission surveys performed on El Hierro Island in period 1998–2012. More than 17,000 measurements efflux were carried out, most them during volcanic unrest that started July 2011. Two significant precursory signals based geochemical and geodetical studies suggest a magma intrusion processes might have before 2011 Island. During preeruptive eruptive periods, time series released by whole island experienced two increases. The...