Mon Tue Wed Thu Fri Sat Sun
26
27

AgriExp, a new workflow for the automated detection of heritage at risk by recent expansion of agricultural lands

A new article led by Landscape Archaeology Research Group (GIAP) of the Catalan Institute of Classical Archaeology (ICAC) presents an integrated workflow that combines Big Earth Data and spatial analysis in Google Earth Engine to provide an efficient... Read more

31-01-2023 News

Trabajos en la mina de Riotinto. /Atalaya Riotinto Minera S.L.

El CSIC aplica dos técnicas pioneras de monitorización de la actividad minera en Riotinto

Investigadores del Consejo Superior de Investigaciones Científicas (CSIC) aplicarán dos sistemas de monitoreo pioneros a nivel nacional e internacional en las actividades mineras en Riotinto. Equipos del Instituto de Geociencias de Madrid (IGEO-CSIC-... Read more

12-01-2023 News

Erupción volcánica en La Palma. | Marta López Saavedra

Una nueva publicación propone mejoras para la reducción del riesgo de desastres naturales en zonas volcánicas

Una nueva publicación de Geociencias Barcelona (GEO3BCN-CSIC) evalúa el estado actual del concepto “multi-peligrosidad” en las políticas y estrategias de mitigación del riesgo natural y propone mejoras en línea con los objetivos marcados por el Marco... Read more

09-01-2023 News

Olaya Dorado y Wentao Zhang, ganadores del GEO3BCN PCPA 2022

Olaya Dorado y Wentao Zhang han sido los ganadores del GEO3BCN-CSIC PhD Candidate Presentation Awards (PCPA) 2022. La entrega de premios se realizó el pasado 20 de diciembre en el marco de la Jornada de Invierno del GEO3BCN. La edición de este año co... Read more

22-12-2022 News

Estefanía Bravo gana por segundo año consecutivo el concurso de fotografía

Las fotografías presentadas por Estefanía Bravo, Jordi Tritlla i Cambra y Liam Bullock son las tres más votadas en el concurso de fotografía de Geociencias Barcelona (GEO3BCN-CSIC) 2022. Los resultados fueron presentados en la tradicional jornada de ... Read more

21-12-2022 News

Joan Martí recibió el premio en la jornada de invierno del ICOG | Imagen cedida por el ICOG.

El Colegio de Geólogos distingue como colegiado de honor a Joan Martí

El investigador de Geociencias Barcelona (GEO3BCN-CSIC), Joan Martí, ha recibido el pasado viernes, 16 de diciembre, la distinción de colegiado de honor en el acto institucional de Navidad del Ilustre Colegio Oficial de Geólogos (ICOG). ... Read more

19-12-2022 News

Sondatges de sediment: una finestra a l'evolució passada de la Terra

‘Sondatges de sediment: una finestra a l'evolució passada de la Terra’ és el nou objecte que protagonitza la tercera part del cicle ‘Objectes de la Rercerca’. Des d'aquest Dijous, 15 de Desembre, es pot visitar a la Delegació del CSIC a Catalunya la ... Read more

15-12-2022 News

25N: día contra la violencia de género

El comité de igualdad de Geociencias Barcelona (GEO3BCN-CSIC) secunda el comunicado de la Comisión Delegada de Igualdad y la Comisión de Mujeres y Ciencia en contra de cualquier tipo de acoso laboral o sexual en el CSIC. ... Read more

25-11-2022 News

Els volkis, premiats amb un accèssit als Premis de Divulgació Científica de l’ACCC

El projecte per a la divulgació de la geologia ‘Descobreix els volcans: Acompanya els Volkis en la seva aventura volcànica’ ha estat premiat amb un accèssit en els Premis de Divulgació Científica de l’Associació Catalana de Comunicació Científica (AC... Read more

23-11-2022 News

European Union. Copernicus Sentinel-2 Imagery - Processed by @DEFIS_EU

The Earth vibrated for eight hours after the eruption of the hunga-tonga volcano

The Earth was beating every 4.5 minutes during the hours following the powerful Hunga-Tonga eruption in Oceania. A new study carried out by the Geosciences Barcelona researcher of the Spanish Research Council (GEO3BCN-CSIC), Jordi Díaz, analyzes the ... Read more

22-11-2022 News

Monitoring storm evolution using a high-density seismic network

Diaz, J., Ruiz, M., Udina, M., Polls, F., Martí, D., & Bech, J. (2023). Monitoring storm evolution using a high-density seismic network. Scientific Reports, 13(1), 1853. https://doi.org/10.1038/s41598-023-28902-8

Latest GEO3BCN Publications

Read more

Catalogue of South African mine tailings for geochemical carbon dioxide removal purposes

Bullock, L. A., Nkosi, Z., Vele, M., & Amponsah-Dacosta, M. (2023). Catalogue of South African mine tailings for geochemical carbon dioxide removal purposes. International Journal of Greenhouse Gas Control, 124, 103844. https://doi.org/https://doi.org/10.1016/j.ijggc.2023.103844

Latest GEO3BCN Publications

Read more

Excitonic luminescence of iodine-intercalated HfS2

Zawadzka, N., Woźniak, T., Strawski, M., Antoniazzi, I., Grzeszczyk, M., Olkowska-Pucko, K., Muhammad, Z., Ibanez, J., Zhao, W., Jadczak, J., Stępniewski, R., Babiński, A., & Molas, M. R. (2023). Excitonic luminescence of iodine-intercalated HfS2. Applied Physics Letters, 122(4), 42102. https://doi.org/10.1063/5.0126894

Latest GEO3BCN Publications

Read more

Choice of hydrogen energy storage in salt caverns and horizontal cavern construction technology

Peng, T., Wan, J., Liu, W., Li, J., Xia, Y., Yuan, G., Jurado, M. J., Fu, P., He, Y., & Liu, H. (2023). Choice of hydrogen energy storage in salt caverns and horizontal cavern construction technology. Journal of Energy Storage, 60, 106489. https://doi.org/https://doi.org/10.1016/j.est.2022.106489

Latest GEO3BCN Publications

Read more

Effects of fluvial sedimentary heterogeneity on CO2 geological storage: Integrating storage capacity, injectivity, distribution and CO2 phases

Sun, X., Cao, Y., Liu, K., Alcalde, J., Cabello, P., Travé, A., Cruset, D., & Gomez-Rivas, E. (2023). Effects of fluvial sedimentary heterogeneity on CO2 geological storage: Integrating storage capacity, injectivity, distribution and CO2 phases. Journal of Hydrology, 617, 128936. https://doi.org/https://doi.org/10.1016/j.jhydrol.2022.128936

Latest GEO3BCN Publications

Read more

Geochemical carbon dioxide removal potential of Spain

Bullock, L. A., Alcalde, J., Tornos, F., & Fernandez-Turiel, J.-L. (2022). Geochemical carbon dioxide removal potential of Spain. Science of The Total Environment, 161287. https://doi.org/https://doi.org/10.1016/j.scitotenv.2022.161287

Latest GEO3BCN Publications

Read more

An Algorithm to Detect Endangered Cultural Heritage by Agricultural Expansion in Drylands at a Global Scale

Conesa, F. C., Orengo, H. A., Lobo, A., & Petrie, C. A. (2023). An Algorithm to Detect Endangered Cultural Heritage by Agricultural Expansion in Drylands at a Global Scale. In Remote Sensing (Vol. 15, Issue 1). https://doi.org/10.3390/rs15010053

Latest GEO3BCN Publications

Read more

Evolution of a low convergence collisional orogen: a review of Pyrenean orogenesis

Ford M, Masini E, Vergés J, Pik R, Ternois S, Léger J, Dielforder A, Frasca G, Grool A, Vinciguerra C, Bernard T, Angrand P, Crémades A, Manatschal G, Chevrot S, Jolivet L, Mouthereau F, Thinon I, Calassou S. 2022. Evolution of a low convergence collisional orogen: a review of Pyrenean orogenesis, BSGF - Earth Sciences Bulletin 193: 19.

Latest GEO3BCN Publications

Read more

The timing of the deglaciation in the Atlantic Iberian mountains: insights from the stratigraphic analysis of a lake sequence in Serra da Estrela (Portugal)

Hernández, A, Sáez, A, Santos, RN, et al. The timing of the deglaciation in the Atlantic Iberian mountains: insights from the stratigraphic analysis of a lake sequence in Serra da Estrela (Portugal). Earth Surf. Process. Landforms. 2022. Accepted Author Manuscript. https://doi.org/10.1002/esp.5536

Latest GEO3BCN Publications

Read more

Pressure-induced band-gap energy increase in a metal iodate

Liang, A., Shi, L.-T., Turnbull, R., Manjón, F. J., Ibáñez, J., Popescu, C., Jasmin, M., Singh, J., Venkatakrishnan, K., Vaitheeswaran, G., & Errandonea, D. (2022). Pressure-induced band-gap energy increase in a metal iodate. Physical Review B, 106(23), 235203. https://doi.org/10.1103/PhysRevB.106.235203

Latest GEO3BCN Publications

Read more

1590 years ago, in 431 CE, the Maya civilisation was laid waste as the Ilopango volcano erupted, killing every living thing within 40 km around the volcano, according to a new study carried out by an international team of scientists and with the participation of Dario Pedrazzi, researcher at Geosciences Barcelona–CSIC (GEO3BCN). The article has been published in the journal PNAS.

It was known, as previous studies had shown, that there had been a major volcanic eruption in the region, but the date was still unknown. This new research lead by Victoria Smith, Associate Professor from University of Oxford and head Tephrochronology group, has established the precise date and nature of this eruption.

To do so, the team of scientists analysed an ice core recovered from Greenland and also carried out radiocarbon measurements from a charred tree found in the TBJ ash deposits. Hence, they were able to date accurately the massive eruption to within just a couple of years, in 431 CE.

The research team used a 3-D tephra dispersal model and they could estimate that the eruption plume rose to 45 km and that the Ilopango’s ash was sent more than 7.000 km, as far away as Greenland.

20190508 FotoNoti03

“This work follows previous studies that were published in 2019 and in which we described, thanks to an extensive analysis of the ash deposits in El Salvador, the main physical parameters of this violent eruption that reached its climax with a series of pyroclastic flows linked a caldera collapse”, said Dario Pedrazzi, researcher at GEO3BCN and co-author of the study. “A great part of this research has been possible thanks to all the data acquired during 3 field campaigns carried out in El Salvador during which we conducted a detailed mapping of the ash deposits present in an area of 200.000 km2”, said Pedrazzi.

Around 55 km3 of magma erupted from Illopango. “More than 2 million km2 of Central America was covered with at least ½ cm of ash and it would have been dark over this region for at least a week”, said Victoria Smith.

50 times bigger than Mount Saint Helens eruption

According to Smith, “Ilopango Eruption was more than 50 times bigger than that of Mount Saint Helens”, occurred in 1980. “The pyroclastic flows from the eruption of Ilopango were 10 times the volume of those from Vesuvius, which erupted in 79 CE, preserving the Roman city of Pompeii in ash.”, she added.

The explosion took place during the Maya Early Classic Period, which extended from 300 to 600 CE, as the civilisation saw growth across Central America. But, according to Victoria Smith, ‘The explosion would have killed every living thing within 40 km and there would have been no inhabitants for many years or decades in the vicinity.’ The enormous eruption did not, however, have a marked impact on the Maya elsewhere.

Ilopango was thought to have been responsible for the anomalously cold decade in the Northern Hemisphere around 540 CE. But, the work shows this date is at odds with archaeological evidence (pottery production), which actually suggests a date near the start of the Early Classic period.

20190508 FotoNoti07

The Ilopango Caldera is located less than 10 km from San Salvador City, the capital of El Salvador, and it's a part of Volcanic Arc of El Salvador which includes a total of 21 active volcanoes, being one of the most active segments of the Central America Volcanic Arc.

This research has been possible with the support of a research project funded by CONACYT and lead by Gerardo Aguirre-Díaz, from Centro de Geociencias, Universidad Nacional Autónoma de México (UNAM). This project is focused in the study of the Ilopango caldera and its aimed to constrain the danger of volcanic supereruptions in Central America.

Researchers from Istituto Nazionale di Geofisica e Vulcanologia (INGV), Centro de Geociencias, Universidad Nacional Autónoma de México (UNAM) and the University of Groningen also participated in the study. They worked alongside with researchers from Queen's University Belfast, Université Clermont Auvergne (CNRS), Università degli studi di Padova, Desert Research Institute, Instituto Potosino de Investigación Científica y Tecnológica, University of Bern and the Ministerio de Medio Ambiente y Recursos Naturales from El Salvador.

Original article

Smith, V., et al (2020)., The magnitude and impact of the 431 CE Tierra Blanca Joven eruption of Ilopango, El Salvador. PNAS. doi: https://www.pnas.org/cgi/doi/10.1073/pnas.2003008117

We use cookies to improve our website and your experience when using it. Cookies used for the essential operation of this site have already been set. To find out more about the cookies we use and how to delete them, see our privacy policy.

  I accept cookies from this site.
EU Cookie Directive plugin by www.channeldigital.co.uk