Contribución a Congreso

URI permanente para esta colecciónhttp://10.0.96.45:4000/handle/11056/20585

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A Creep Event on the Shallow Interface of the Nicoya Peninsula, Costa Rica Seismogenic Zone
(American Geophysical Union, 2004) Protti, Marino; González, Victor; Kato, Teruyuki; Iinuma, Takeshi; Miyazaki, Shinichi; Obana, Koichiro; Kaneda, Yoshiyuki; LaFemina, Peter; Dixon, Timothy; Schwartz, Susan
Summary of the paper "A Creep Event on the Shallow Interface of the Nicoya Peninsula, Costa Rica Seismogenic Zone"
Active Thrusting in the Inner Fore arc of Middle America, Costa Rica
(American Geophysical Union, 2004) Sitchler, J. C.; Fischer, D. M.; Gardner, T. W.; Protti, Marino
Summary of the paper "Active Thrusting in the Inner Fore arc of Middle America, Costa Rica"
Coastal Deformation Patterns Along the Nicoya Seismic Gap, Pacific Coast, Costa Rica, Central America
(American Geophysical Union, 2004) Marshall, Jean S.; Khaw, Jonathan F.; Parra, J. G.; Annis, L. K.; Protti, Marino
Summary of the paper "Coastal Deformation Patterns Along the Nicoya Seismic Gap, Pacific Coast, Costa Rica, Central America"
Crustal Thickness Along the Central American Volcanic Arc
(American Geophysical Union, 2004) Auger, L. S.; Abers, G; Rossi, G.; Plank, T.; Fisher, K.; González, V.; Protti, Marino; Strauch, Wilfried
Resumen de ponencia "Crustal Thickness Along the Central American Volcanic Arc"
Fine-Tuning the Seismic Potential of the Nicoya Gap in NW Costa Rica
(American Geophysical Union, 2007-05-22) González, Victor; Protti, Marino
The Nicoya seismic gap is a subduction segment along the Middle American Trench where the Cocos plate subducts under the Caribbean plate. This seismic gap, located under the Nicoya Peninsula in northwestern Costa Rica, has ruptured with large earthquakes in 1853, 1900 and 1950. Its strong coupling contrasts with the immediately adjacent weak segments: Nicaragua to the NW and central Costa Rica to the SE. The Nicaragua segment has a very high level of background seismicity with several earthquakes per year with magnitudes above 5.0; its most recent large event was an abnormally slow earthquake (Mw=7.6) that generated a destructive tsunami in 1992. The central Costa Rica segment also has a high level of background seismicity with very frequent events with magnitudes above 4.5; its last large event (Mw=7.0) occurred in 1990 just at the boundary with the Nicoya seismic gap. The aftershock areas of the Costa Rica, 1990 and Nicaragua, 1992 earthquakes allowed the geographic extent of the Nicoya seismic gap to be clearly defined. Evidences that support a strong coupling for the Nicoya segment are: a) very low background seismicity; b) the sudden end of aftershocks of the 1990 and 1992 earthquakes at its boundaries; and c) the fast NE motion (parallel to convergence) of the Nicoya Peninsula (nearly 30mm/yr.) observed with GPS. Recent seismological and geodetic studies (Protti et al., 2001; Newman et al., 2002; Iinuma et al., 2004; Norabuena et al., 2004; DeShone et al., 2006) restrict the seismic coupling to 50 +/- 5% and the potential rupture area to 8000 +/- 1500 km2. These values, together with a convergence rate around 88mm/yr and no significant seismic slip since 1950, give the Nicoya seismic gap a potential, for the following 5 years, to generate a earthquake with Mw=7.8 +/- 0.1 magnitude.
Fluorosis dental en la población infantil en las cercanías del Volcán Irazú, Costa Rica
(Universidad Nacional, Costa Rica, 2014) Rojas Zúñiga, Floricelle; Floor, Geerke H.; Malavassi, Eduardo; Martínez Cruz, María; Van Bergen, Manfred
Póster presentado en el XX Congreso Latinoamericano de Estudiantes de Ingeniería Química
Imaging the Subduction Factory Beneath Central America: The TUCAN Broadband Seismic Experiment
(American Geophysical Union, 2004) Abers, Geoffrey; Auger, L.; Syracuse, E.; Plank, T.; Fischer, K. M.; Rychert, Catherine; Walker, A.; Protti, Marino; Strauch, Wilfried; Perez, P.
Summary of the paper "Imaging the Subduction Factory Beneath Central America: The TOUCAN Broadband Seismic Experiment"
Monitoreo geodésico de una Brecha Sísmica Madura: Nicoya, Costa Rica
(Universidad Nacional, Costa Rica, 2002-10) Protti, Marino; González, Victor
Una brecha sísmica existe bajo y frente a la Península de Nicoya en el noroeste de Costa Rica. Esta brecha es un segmento de la zona de subducción de Centroamérica donde la placa del Coco se introduce por debajo de la placa del Caribe. Grandes sismos han ocurrido en este segmento en 1853, 1900 y 1950. Sin deslizamiento significativo desde 1950, con una velocidad de convergencia cercana a los 90 mm/año y con un área de ruptura entre los 5000 y 10000 km2, la brecha sísmica de Nicoya tiene potencial para generar un terremoto de magnitud superior a los 7.5 grados. Dado su alto potencial sísmico, la disponibilidad de información y especialmente el hecho de que la Península de Nicoya se encuentra directamente sobre el área de ruptura, esta brecha sísmica ha sido seleccionada como uno de los dos sitios para el Experimento Mundial de las Zonas Sismogénicas (SEIZE). En un esfuerzo internacional por monitorear y documentar la deformación cortical, el OVSICORI-UNA ha venido trabajando con instituciones de los Estados Unidos y del Japón en la operación de estaciones sísmicas y en la ocupación de una red de GPS en y alrededor de la Península de Nicoya. Esta península está siendo desplazada hacia el continente y subsidiendo a velocidades de hasta 25 mm/año, consistente con la acumulación de deformación esperada a lo largo de una zona de subducción bloqueda. Durante el año 2002 estamos instalando 3 estaciones de registro continuo de GPS y re-ocuparemos la red total de GPS durante el 2003. Dado el estado de madurez de la brecha sísmica de Nicoya, estas mediciones podrían darnos la oportunidad de documentar la deformación co-sísmica y post-sísmica cuando este gran sismo ocurra.
Monitoring magmatic-hydrothermal activity with rare earth elements in crater lakes
(International Association of Volcanology and Chemistry of the Earth's Interior, 2013-07) Van Bergen, Manfred; Martínez Cruz, María; Ayres, Georgina
Resumen de la ponencia Monitoring magmatic-hydrothermal activity with rare earth elements in crater lakes
OVSICORI's Southern Costa Rica Geodynamic Control Network: The opening of a Pandora's Box
(IASPEI, 2016-06-20) Protti, Marino; González Salas, Victor; Hernández Rodríguez, Enrique; Muller, Cyril; Rojas, Daniel; Villalobos, Hairo
Summary of the presentation “OVSICORI's South Costa Rica Geodynamic Control Network: Opening a Pandora's box. Presented at II General Assembly of the Latin America and Caribbean Seismological Commission of IASPEI, Heredia, Costa Rica, June 20-22, 2016
Poás volcano: significance of mobile trace elements in the hyperacid crater lake
(IAVCEI Commission on Volcano Lakes, 2019-03) Martínez Cruz, María; Keizer, Martijn; Avard, Geoffroy; Brenes-Navarro, Gilberto; Herrera-Murillo, Jorge
Resumen de la ponencia: Poás volcano: significance of mobile trace elements in the hyperacid crater lake
Seismic activity at Irazú volcano after the 5th September 2012 Nicoya, Earthquake, Costa Rica
(2013) Martínez Cruz, María; Pacheco Alvarado, Javier; Avard, Geoffroy; Chavarría Kopper, Federico
Póster sobre actividad sísmica en el volcán Irazú después del terremoto del 5 de septiembre de 2012 en Nicoya, Costa Rica
Seismogenic zone structure along the Middle America Trench, Nicoya Peninsula, Costa Rica, from 3D local earthquake tomography
(American Geophysical Union, 2004) Deshon, Heather R.; Schwartz, Susan; Dorman, LeRoy; Newman, Andrew V.; Protti, Marino; González, Victor
Resumen de la ponencia "Estructura de la zona sismogénica a lo largo de la Fosa Mesoamericana, Nicoya Península, Costa Rica, a partir de tomografía sísmica local 3D"
Spatial shifts in fumarolic degassing at Poás volcano: Phreatic Activity in the Ultra Acid Crater Lake versus Subaerial Degassing
(IAVCEI Commission on Hazards and Risk, 2011-09-11) Martínez Cruz, María; Fernández, Erick; Van Bergen, Manfred J.
Summary of the presentation Spatial shifts in fumarolic degassing at Poás volcano: Phreatic Activity in the Ultra Acid Crater Lake versus Subaerial Degassing
Sulphur isotopic composition of volcanic gases from Poás and Turrialba volcanoes, Costa Rica
(Goldschmidt Conference, 2015) Alfonso, P.; Martínez Cruz, María; Canet, C.; Delgado, H.; Fernández, Erick; Sáenz, Wendy
Póster presentado en Goldschmidt Conference 2015
The opening of vents like decompression valves of the hydrothermal system at Turrialba volcano, Costa Rica
(International Association of Volcanology and Chemistry of the Earth's Interior, 2013-07-24) Avard, Geoffroy; Pacheco, Javier; Martínez Cruz, María; Miranda, Sebastian; Conde, Vladimir; Galle, Bo
When the hazard you are monitoring is the least of your troubles: the early days of a ubiquitous computing citizen science initiative on active volcanoes
(American Geophysical Union, 2014) Van Manen, Saskia M.; Richards, Mike; Seaton, Robert; Cameron, Ian; Avard, Geoffroy; Martínez Cruz, María

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