Revista Geológica de América Central
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Characterization of the ashes from the 2014-2015 Turrialba Volcano eruptions by means of scanning electron microscopy and energy dispersive x-ray spectroscopy
(2016)The Turrialba Volcano is a stratovolcano located approximately 35 km northwest from San José, Costa Rica’s capital city. Since October 29, 2014, until at least late 2015, a series of eruptions has represented ... -
Petrographic analysis of the volcanic bombs and blocks from Poás Volcano: April-June 2017 eruptive period
(2017-09)During the first semester of 2017, Poás Volcano, in the Central American Volcanic Arc (CAVA) initiated a period of volcanic unrest that included high energy phreatomagmatic and magmatic eruptions. The most notable erup-tions ... -
Changes in vegetation due to volcanic activity, case study: Turrialba Volcano, Costa Rica, 2014 to 2017 eruptive period
(2018)Since October of 2014, the Turrialba Volcano began an eruptive cycle involving phreatic and phreato-magmatic eruptions. These eruptions signal an important change in behavior of this volcanic system which between 1886 and ... -
State of static stress on the Costa Rican Cocos-Caribbean plate interface: mechanical interpretation for the origin of asperities on the seismogenic zone
(2015-11)The forearc region along the Central American Subduction Zone shows a series of trench-parallel posi-tive gravity anomalies with corresponding gravity lows along the trench and toward the coast. These features extend from ... -
El deslizamiento del 8 de diciembre de 1994 en el volcán Irazú (Costa Rica): aspectos históricos y geomorfología con base en fotografías aéreas históricas y recientes
(2018)On December 8th, 1994, at 22:48 (local time), a particular event took place on the northern flank of the Irazú volcano, which was described at that time as a phreatic eruption. Recently, the volcanic nature of this event ... -
El terremoto de Sámara (Costa Rica) del 5 de setiembre del 2012 (Mw 7,6)
(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 ... -
Sismicidad en Costa Rica durante el 2015
(2016)Durante el 2015 la Red Sismológica Nacional (RSN: UCR-ICE) localizó 6989 sismos de los cuales 168 fueron sentidos por la población. Se percibieron en Costa Rica 13 sismos con magnitud Mw > 5,0. La mayoría (86%) de los ... -
Modelo mínimo unidimensional de velocidades de la onda P para la cordillera volcánica de Guanacaste, Costa Rica
(2016)En este estudio se calcula un modelo mínimo de velocidades para la Cordillera Volcánica de Guanacaste a partir de 475 sismos locales registrados por el Observatorio Vulcanológico y Sismológico Arenal Miravalles (OSIVAM) ... -
Sismicidad registrada por la RSN en el 2016
(2017)During 2016, the National Seismological Network (RSN: UCR-ICE) registered 4594 earthquakes and reported 210 felt events. There were 13 significant earthquakes with magnitude Mw > 5.0. The majority (86%) of felt earthquakes ... -
Actividad sísmica percibida en Costa Rica durante el 2017
(2018)Durante el 2017 la Red Sismológica Nacional (RSN: UCR-ICE) localizó 2755 sismos y reportó 216 eventos sentidos por la población, incluyendo cuatro sismos relevantes con magnitudes (Mw) de entre 5,5 y 6,3. La mayoría (91%) ... -
El Sistema de Falla Navarro: desplazamientos izquierdos a lo largo del Cinturón Deformado del Centro de Costa Rica
(2016)En este estudio se define el sistema de falla Navarro con base en observaciones geológicas, geomorfológicas y sismológicas. Este sistema de falla está localizado entre las estribaciones norte de la cordillera de Talamanca ...
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