Browsing Observatorio Vulcanológico y Sismológico de Costa Rica by Title

Now showing items 95-114 of 185

    • Mantle anisotropy beneath Costa Rica and Nicaragua and the TUCAN Broadband Seismometer Array 

      Fischer, K. M.; Rychert, C. A.; Walker, A.; Abers, G. A.; Auger, L.; Syracuse, E.; Plank, T. A.; Protti, Marino; Salas, V. G.; Strauch, Wilfried; Perez, P. (2004)

    • Mechanics of back arc deformation in Costa Rica: Evidence from an aftershock study of the April 22, 1991, Valle de la Estrella, Costa Rica, earthquake (Mw=7.7) 

      Protti, Marino; Schwartz, Susan (American Geophysical Union, 1994-10)
      The April 22, 1991, Mw=7.7 Valle de la Estrella, Costa Rica, earthquake represents back arc thrusting of the Caribbean plate beneath the Panama block along the North Panama Thrust Belt. Large back arc thrusting events are ...

    • Mechanisms of Unrest and Eruption at Persistently Restless Volcanoes: Insights From the 2015 Eruption of Telica Volcano, Nicaragua 

      Roman, Diana C.; Bussard, Rebecca; Higgins, Machel; Feineman, Maureen; de Moor, Joost Maarten; Saballos, Armando; Ibarra, Martha; Strauch, Wilfried; Tenorio, Virginia; LaFemina, Peter; Stephens, Kirsten; Wauthier, Christelle; Arellano, Santiago; Avard, Geoffroy; Martínez Cruz, María; Burton, Michael; Varnam, Matthew (Advancing Earh and Space Science, 2019)
      Many of Earth's volcanoes experience well‐defined states of “quiescence” and “unrest,” with unrest occasionally culminating in eruption. Some volcanoes, however, experience an unusually protracted (i.e., decades‐long) ...

    • Mercury fluxes from volcanic and geothermal sources: an update 

      Bagnato, E.; Tamburello, G.; Avard, G.; Martínez-Cruz, M.; Enrico, M.; Fu, X.; Sprovieri, M.; Sonke, J. E. (Geological Society, London, Special Publications, 2014-08-02)
      We review the state of knowledge on global volcanogenic Hg emissions to the atmosphere and present new data from seven active volcanoes (Poa´s, Rinco´n de la Vieja, Turrialba, Aso, Mutnovsky, Gorely and Etna) and two ...

    • Mercury fluxes from volcanic and geothermal sources: An update 

      BAGNATO, E.; TAMBURELLO, Giancarlo; AVARD, G.; MARTINEZ-CRUZ, M.; ENRICO, M.; FU, X.; SPROVIERI, MARIO; Sonke, Jeroen; BAGNATO, e. (The Geological Society of London vol. 410 263 – 285. 2015, 2015-03-01)
      We review the state of knowledge on global volcanogenic Hg emissions to the atmosphere and present new data from seven active volcanoes (Poás, Rincón de la Vieja, Turrialba, Aso, Mutnovsky, Gorely and Etna) and two geothermal ...

    • Microbial Community Structure Along a Horizontal Oxygen Gradient in a Costa Rican Volcanic Influenced Acid Rock Drainage System 

      Arce-Rodríguez, Alejandro; Puente-Sánchez, Fernando; Avendaño, Roberto; Libby, Eduardo; Mora-Amador, Raúl; Rojas-Jiménez, Keilor; Martínez, María; Pieper, Dietmar H.; Chavarría, Max (Springer, 2020)
      We describe the geochemistry and microbial diversity of a pristine environment that resembles an acid rock drainage (ARD) but it is actually the result of hydrothermal and volcanic influences. We designate this environment, ...

    • Middle to Late Miocene Contractional Deformation in Costa Rica Triggered by Plate Geodynamics 

      Mescua, José Francisco; Porras, Hernán; Durán, Patrick; Giambiagi, Laura; Maarten de Moor, J; Cascante, Monserrat; Protti, Marino; Poblete, Fernando (AGU Publications, 2017-12-11)
      Contractional deformation in Costa Rica is usually attributed to the subduction of the aseismic Cocos Ridge. In this work, we review the evidences for contraction in the middle to late Miocene, prior to the arrival of the ...

    • Monitoreo geodésico de una Brecha Sísmica Madura: Nicoya, Costa Rica 

      Protti, Marino; González, Victor (Universidad Nacional, Costa Rica, 2002-10)
      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 ...

    • Monitoring magmatic-hydrothermal activity with rare earth elements in crater lakes 

      Van Bergen, Manfred; Martínez Cruz, María; Ayres, Georgina (International Association of Volcanology and Chemistry of the Earth's Interior, 2013-07)
      Resumen de la ponencia Monitoring magmatic-hydrothermal activity with rare earth elements in crater lakes

    • Monitoring transient changes within overpressured regions of subduction zones using ambient seismic noise 

      Chaves, Esteban; Schwartz, Susan (American Association for the Advancement of Sciences (AAAS), 2016)
      In subduction zones, elevated pore fluid pressure, generally linked to metamorphic dehydration reactions, has a profound influence on the mechanical behavior of the plate interface and forearc crust through its control on ...

    • Morphological and geochemical features of crater lakes in Costa Rica: an overview 

      Tassi, Franco; Vaselli, Orlando; Fernández, Erik; Duarte, Eliecer; Martínez, María; Delgado Huertas, Antonio; Bergamaschi, Francesco (Journal of limnology, 2009)
      This paper describes the compositional and morphological features of the crater lakes found in the volcanoes of Rincón de La Vieja, Poás, Irazú, Congo and Tenorio volcanoes (Costa Rica). As evidenced by the distribution ...

    • New insights into Kawah Ijen’s volcanic system from the wet volcano workshop experiment 

      Gunawan, Hendra; Caudron, Corentin; Pallister, John; Primulyana, Sofyan; Christenson, Bruce; Mccausland, Wendy; Van Hinsberg, Vincent; Lewicki, Jennifer; Rouwet, Dmitri; Kelly, Peter; Kern, Christoph; Werner, Cynthia; Johnson, Jeffrey B.; Saing, Ugan; Suparjan; Budi Utami, Sri; Kamil Syahbana, Devy; Heri Purwanto, Bambang; Sealing, Christine; Martínez Cruz, María; Maryanto, Sukir; Bani, Philipson; Laurin, Antoine; Schmid, Agathe; Bradley, Kyle; Agung Nandaka, I Gusti Made; Hendrasto, Mochammad (Geological Society London Special Publications, 2016-02-25)
      Volcanoes with crater lakes and/or extensive hydrothermal systems pose significant challenges with respect to monitoring and forecasting eruptions, but they also provide new opportunities to enhance our understanding of ...

    • Nicoya earthquake rupture anticipated by geodetic measurement of the locked plate interface 

      Protti, Marino; González, Victor; Newman, Andrew; Dixon, Timothy H.; Schwartz, Susan; Marshall, Jeffrey S; Feng, Lujia; Walter, Jacob; Malservisi, Rocco; Owen, Susan E. (Nature Research, 2013-12-22)
      The Nicoya Peninsula in Costa Rica is one of the few places on Earth where the seismically active plate interface of a subduction zone is directly overlaid by land rather than ocean. At this plate interface, large megathrust ...

    • NICOYA, COSTA RICA, TRANS-PENINSULA GPS EXPERIMENT AND INTER-PLATE COUPLING 

      Iinuma, Takeshi; Protti, Marino; Obana, Koichiro; Miyazaki, Shinichi; González, Victor; Van der Laat, Rodolfo; Kato, Teruyuki; Kaneda, Yoshiyuki; Hernández, Enrique (2003-06-30)
      Since 2001, a GPS observation project has been carried out on the Nicoya Peninsula, Costa Rica. Costa Rica is located on the western margin of the Caribbean plate, and the Cocos plate is subducting under the Caribbean plate ...

    • Nicoya, Costa Rica: an IOPD target where the seismogenic zone or large earthquake can be drilled and instrumented 

      Protti, Marino; González, Victor; Yoshiyuki, Kaneda; Brown, Kevin (2009-09-23)

    • Nitrogen recycling at the Costa Rican subduction zone: The role of incoming plate structure 

      Hyunwoo, Lee; Fischer, Tobias; De Moor, J. Maarten; Sharp, Zachary D.; Takahata, Naoto; Sano, Yuji (Springer Nature, 2017-10-24)
      Efficient recycling of subducted sedimentary nitrogen (N) back to the atmosphere through arc volcanism has been advocated for the Central America margin while at other locations mass balance considerations and N contents ...

    • Observatorio Vulcanológico y Sismológico de Costa Rica, Universidad Nacional 

      Protti, Marino (Universidad Nacional, Costa Rica, 1985-01)
      El OVSICORI realiza una serie de investigaciones volcánicas y sísmicas a nivel nacional. Como parte del programa de vigilancia volcánica se efectúan mediciones de temperatura y análisis de condensados en fumarolas.

    • OKSP: a novel deep learning automatic event detection pipeline for seismic monitoring in Costa Rica 

      Van der Laat, Leonardo; Baldares, Ronald; Chaves, Esteban; Meneses, Esteban (Instituto de Ingenieros Eléctricos y Electrónicos (IEEE), 2021)
      Small magnitude earthquakes are the most abundant but the most difficult to locate robustly and well due to their low amplitudes and high frequencies usually obscured by heterogeneous noise sources. They highlight crucial ...

    • OVSICORI's Southern Costa Rica Geodynamic Control Network: The opening of a Pandora's Box 

      Protti, Marino; González Salas, Victor; Hernández Rodríguez, Enrique; Muller, Cyril; Rojas, Daniel; Villalobos, Hairo (IASPEI, 2016-06-20)
      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, ...

    • Parâmetros de fonte de sismos locais por inversão de formas de ondas 

      Zahradnik, Jiri; Vieira Barros, Lucas; Quintero, Ronnie (Sociedade Brasileira de Geofísica, 2010-11)
      The main purpose of this work is to invert seismic waveforms in order to obtain moment tensor for two medium size earthquakes detected by OVSICORI-UNA Costa Rica permanent seismic network, occurred in 2004, following the ...