Browsing Observatorio Vulcanológico y Sismológico de Costa Rica by Title
Now showing items 166-185 of 185
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Thin-skinned mass-wasting responsible for widespread deformation at Arenal volcano
(Frontiers Media, 2014-12-03)The shape and stability of a volcano’s edifice depends on the relationship between eruption rate and the loss or redistribution of material due to erosion, mass-wasting or deformation. This work provides measurements of ... -
Tomographic evidence for a subducted seamount beneath the Gulf of Nicoya, Costa Rica: The cause of the 1990 Mw = 7.0 Gulf of Nicoya earthquake
(American Geophysical Union, 2002-04-26)Tomographic images constrain the existence of a subducted seamount beneath the Gulf of Nicoya, Costa Rica. The subducted seamount is found at a depth of 30 km within the rupture area of the March 25, 1990, Mw = 7.0 Gulf ... -
Transport properties of glassy and molten lavas as a function of temperature and composition
(Elsevier, 2016-11-15)We provide measurements of thermal diffusivity (D), heat capacity (CP), and viscosity (η) for 12 remelted natural lavas and 4 synthetic glasses and melts, ranging in composition from leucogranite to low-silica basalt, and ... -
Understanding and forecasting phreatic eruptions driven by magmatic degassing
(Springer Nature, 2018-05-18)This paper examines phreatic eruptions which are driven by inputs of magma and magmatic gas. We synthesize data from several significant phreatic systems, including two in Costa Rica (Turrialba and Poás) which are currently ... -
Using the sulfide replacement petrology in lunar breccia 67915 to construct a thermodynamic model of S-bearing fluid in the lunar crust
(Elsevier, 2015-12-15)In this work, we investigate the compositions and origin of metasomatic fluids responsible for the formation of sulfide replacement textures in Mg-Suite lithologies of lunar samples 67915-149 and 67915-150. We have constructed ... -
Videos de visitas al volcán Arenal (24 videos)
(Universidad Nacional, Costa Rica, 2016)Videos del volcán Arenal, en gira de campo -
Videos de visitas al volcán Irazú (20 videos)
(Universidad Nacional, Costa Rica, 2016)Videos del volcán Irazú, en gira de campo -
Videos de visitas al Volcán Poás (20 videos)
(Universidad Nacional, Costa Rica, 2016)Videos del volcán Póas, en gira de campo -
Videos de visitas al Volcán Rincón de la Vieja (8 videos)
(Universidad Nacional, Costa Rica, 2016)Videos of the Rincón de la Vieja Volcano, in a field tour -
Videos de visitas al volcán Turrialba (20 videos)
(Universidad Nacional, Costa Rica, 2016)Videos del volcán Turrialba, en gira de campo -
Visita al Flanco Oeste del Volcán Turrialba: Efectos Continuados de la Acidificación y Caída de Cenizas (Reporte de campo: 6 de setiembre de 2016)
(Universidad Nacional, Costa Rica, 2016)Este informe resume observaciones hechas en el flanco bajo e intermedio del volcán Turrialba, el 6 de setiembre de 2016. -
Visita al sur y suroeste de la cima del volcán Turrialba: Estimado de espesores de ceniza (Reporte de campo: 7 de setiembre de 2016)
(Universidad Nacional, Costa Rica, 2016)Se presenta aquí un informe breve de campo basado en la visita al sur y suroeste de la cima del volcán Turrialba, el 7 de setiembre de 2016. -
Visita al Volcán Rincón de la Vieja: Mapeo de Efecto y Características de Erupciones Freáticas Recientes. (Reporte de campo: 10-11 de marzo de 2016)
(Universidad Nacional, Costa Rica, 2016)Entre el 10 y el 11 de marzo de 2016 se visitó la cima del volcán Rincón de la Vieja con el fin de mapear “in Situ” el efecto y características generales de los depósitos de materiales expulsados por erupciones freáticas ... -
Volcán Poas: Algunos Cambios Comparativos del Domo y Alrededores (Reporte de campo, 21 de julio de 2015)
(Universidad Nacional, Costa Rica, 2015)Durante la visita al volcán Poás, el 21 de julio de 2015, se realizaron algunas observaciones principalmente en el sector oeste del domo en sus secciones superior e inferior. -
Yield estimate (230 kt) for a Mueller-Murphy model of the 3 september 2017, North Korean nuclear test (mbNEIC = 6.3) from teleseismic broadband P waves assuming extensive near-source damage
(AGU Advancing Earth and Space Sciences, 2018)The 3 September 2017 underground nuclear test (mbNEIC= 6.3) is the largest of six announced North Korean explosions. The event generated many P wave seismograms at global broadband seismic stations with good signal-to-noise ... -
Yield estimates for the six North Korean nuclear tests from teleseismic P wave modeling and intercorrelation of P and Pn recordings
(AGU Advancing Earth and Space Sciences, 2019)The yields of the six declared underground nuclear tests at the North Korean test site are estimated using high-frequency teleseismic P wave amplitude modeling and waveform equalization of short-period teleseismic P waves ...