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Evolution and dynamics of the open‑vent eruption at Arenal volcano (Costa Rica, 1968–2010): what we learned and perspectives
(2022)
On 29 July 1968, there was a violent reactivation of Arenal volcano. The resulting westward-directed lateral blast eruption left two villages destroyed and 78 people dead. The activity continued as a long-lasting, open-vent ...
Volcano hazard and surveillance in Costa Rica
Peligro y vigilancia volcánica en Costa Rica
(2021-11-01)
Costa Rica hosts ten volcanic complexes and is highly tectonically active due to its location at the interaction between the Cocos, Nazca, and Caribbean plates and the Panama microplate. Three of the five historically ...
Programa y resúmenes: 5° Congreso Geológico UCR-2021
(2021)
El Congreso Geológico de la Universidad de Costa Rica llega a su quinto evento consecutivo desde el 2017 y con cada año que se celebra, se refuerza la necesidad de este claustro académico, en el cual la comunidad ...
El sismo de Capellades del 2016 y su secuencia sísmica: manifestación de fallamiento de rumbo en el arco volcánico de Costa Rica
The 2016 Capellades earthquake and its seismic sequence: Expression of strike-slip faulting in the volcanic arc of Costa Rica
(2018-05)
El 30 de noviembre del 2016 a las 18:25 (00:25 UTC del 1º de diciembre) ocurrió un sismo de Mw 5,5 a una profundidad de 2,7 km, 4 km al norte de Capellades de Alvarado, Costa Rica. Fue ...
Magmatic and Tectonic Domains of Central Costa Rica and the Irazú-Turrialba Volcanic Complex Revealed by Ambient Noise Tomography
(2022-11)
The Central America Volcanic Arc runs from Guatemala to Panama, locally interrupted in Costa Rica after the twin-system Irazú-Turrialba Volcanic Complex, at the onset of the Talamanca Cordillera. A marked geological ...
Explosion mechanisms at Arenal volcano, Costa Rica: An interpretation from integration of seismic and Doppler radar data
(2012-01-21)
We execute an integrated analysis of broadband seismic and Doppler radar data to gain insights into the subsurface mechanisms that drive repetitive, mildly explosive activity of Arenal volcano (Costa Rica). We find large ...
Time-Dependent Spatial Amplitude Patterns of Harmonic Tremor at Arenal Volcano, Costa Rica: Seismic-Wave Interferences?
(2012-12-01)
Seismograms recorded at the receivers of a small‐aperture seismic array usually display very similar waveforms and amplitudes, as a consequence of their close proximity. During the analysis of the volcanic tremor wave field ...
El terremoto de Sámara (Costa Rica) del 5 de setiembre del 2012 (Mw 7,6)
The Samara (Costa Rica) earthquake of 5 september 2012 (Mw7.6)
(2013)
El 5 de setiembre del 2012 se produjo un terremoto (Mw 7,6) en la región de la península de Nicoya. A partir de dos métodos que usan modelos de velocidades en 1D y 3D presentamos tres soluciones para el inicio de la ruptura ...
Array analysis of the seismic wavefield of long-period events and volcanic tremor at Arenal volcano, Costa Rica
(2014-06-06)
We use wavefield decomposition methods (time domain cross correlation and frequency domain multiple-signal classification) to analyze seismic data recorded by a dense, small-aperture array located 2 km West of Arenal ...