Browsing Artículos científicos by Issue Date

Now showing items 1-20 of 36

    • Importancia de la batimetría de las planicies abisales en la propagación de tsunamis transoceánicos 

      Chacon-Barrantes, Silvia (Ciencia y tecnología Vol.25,No.1-2 22-33, 2007)
      The initial form of a tsunami originated by an homogeneous seismic source consists on a simple wave front. While the tsunami propagates in deep water, this simple form suffers several modifications ...

    • Simulación rápida de la propagación del tsunami de Chile de 1960 hasta la Bahía de Hilo en Hawaii 

      Chacon-Barrantes, Silvia (Tecnología en marcha Vol.20 No.4 24-29, 2007)
      En este trabajo se simula la propagación del tsunami de Chile de 1960, desde su región de generación hasta la bahía de Hilo en Hawái, empleando un método híbrido que permite obtener resultados en un intervalo relativamente ...

    • Factores que influyen en la forma de la cola de un tsunami 

      Chacon-Barrantes, Silvia (UNICIENCIA Vol. 23 65-69, 2009)
      The propagation speed of a tsunami depends on the depth of the ocean in which it propagates. As the tsunami crosses the abyssal plain, it suffers modifications in its form due to change in the depths of the ocean bottom. ...

    • Modeling a tsunami from the Nicoya, Costa Rica, seismic gap and its potential impact in Puntarenas 

      Chacon-Barrantes, Silvia; Protti, Marino (Journal of South American Earth Sciences .Vol.31 No.4 372-382, 2011)
      Although subduction zones around the world are known to be the source of earthquakes and/or tsunamis, not all segments of these plate boundaries generate destructive earthquakes and catastrophic tsunamis. Costa Rica, in ...

    • A combined first-principles computational/experimental study on LiNi 0.66Co 0.17Mn 0.17O 2 as a potential layered cathode material 

      Saavedra-Arias, José; Venkateswara Rao, Chitturi; Shojan, Jifi; Manivannan, Ayyakkannu; Torres, Lorraine; Ishikawa, Yasuyuki; Katiyar, Ram (Elsevier, 2012-08-01)
      First-principles calculations are used to analyze the phase stability, formation energy, and Li intercalation potential for a series of layered cathode materials. The calculations show LiNi 0.66Co 0.17Mn 0.17O 2 as a ...

    • Several Tsunami Scenarios at the North Sea and their consequences at the German Bight 

      Chacon-Barrantes, Silvia; Narayanan, Rangaswami; Mayerle, Roberto (Journal of Tsunami Society International vol.32 no.1 2013, 2013)
      Tsunamis occurred in the past at the North Sea, but not frequently. There are historical and geological records of several tsunamis: the Storegga tsunami caused sediment deposits in Scotland 8,000 years ago and records of ...

    • β- decay of 65Mn to 65Fe 

      Olaizola, Bruno; Fraille, L.M.; Mach, Henryk; Aprahamian, Ani; Briz, Jose Antonio; Cal-González, J.; Ghita, Dan Gabriel; Köester, U.; Kurcewicz, Wiktor; Lesher, S.R.; Pauwels, Dieter; Picado, Esteban; Poves, Alfredo; Radulov, D.; Simpson, G.S.; Udías, J.M. (American Physical Society, 2013-10-07)
      The low-energy structure of 65Fe has been studied by means of γ and fast-timing spectroscopy at the ISOLDE facility, CERN. A level scheme of 65Fe populated following the β-decay of 65Mn was established for the first time. ...

    • A combined experimental and theoretical study of gas sorption on nanoporous silver triazolato metal-organic frameworks 

      Yang, Guang; Santana, Juan A; Rivera Ramos, Milton E.; García - Ricard, Omar; Saavedra-Arias, José; Ishikawa, Yasuyuki; Hernandez-Maldonado, Arturo; Raptis, Raphael G. (2014-01-01)
      A new silver-triazolate metal-organic framework (MOF), {Ag 3[Ag5(μ3-3,5-tBu 2tz)6](BF4)2}n (2), has been prepared and structurally characterized. The CO2 sorption properties of this new MOF and previously reported isostructural ...

    • Polycrystalline indium films in the percolation threshold regime: Time correlation between electric conduction and optical properties with film morphology 

      Clark, Neville; Vargas, William E.; Azofeifa, Daniel E.; Sáenz-Arce, Giovanni; Solís, Hugo; Ramírez Hidalgo, Gustavo (IOP Publishing Ltd., 2014-02-21)
      Polycrystalline indium films have been deposited at room temperature by electron beam evaporation on amorphous quartz substrates. Once deposited, electrical resistance and specular reflection of the films, for wavelengths ...

    • Multiparticle emission in the decay of Ar 31 

      Koldste, G.T.; Blank, B.; Borge, M.J.G.; Briz, J.A.; Carmona-Gallardo, M.; Fraile, L.M.; Fynbo, H.O.U.; Giovinazzo, J.; Grann, B.D.; Johansen, J.G.; Jokinen, A.; Jonson, B.; Kurturkian-Nieto, T.; Kusk, J.H.; Nilsson, T.; Perea, A.; Pesudo, V.; Picado, Esteban; Riisager, K.; Saastamoinen, A.; Tengblad, O.; Thomas, J.C.; Van del Walle, J. (American Physical Society, 2014-06-25)
      A multihit capacity setup was used to study the decay of the dripline nucleus 31Ar, produced at the ISOLDE facility at CERN. A spectroscopic analysis of the β-delayed three-proton decay of 31Ar is presented for the first ...

    • The rock coast of South and Central America 

      Blanco-Chao, Ramon; Pedoja, Kevin; Witt, César; martinod, joseph; Husson, Laurent; Regard, Vincent; Audin, Laurence; Nexer, Maëlle; delcaillau, bernard; Saillard, Marianne; Melnick, Daniel; Dumont, Jean Francois; Santana, Essy; Navarrete, Edison; Martillo, Carlos; PAPPALARDO, MARTA; Ayala, Luis; Araya, J.F.; Feal-Pérez, A.; Correa, D.; Arozarena-Llopis, Isabel (Geological Society Memoirs 2014, 2014-07)
      The great variety of climatic conditions, tidal ranges and wave regimes of South and Central America act on a complex geology and tectonic framework. Many of the rock and cliffed coasts of South America are strongly ...

    • Sizeable beta-strength in 31Ar (β3p) decay 

      Koldste, G.T.; Blank, B.; Borge, M.J.G.; Briz, J.A.; Carmona-Gallardo, M.; Fraile, L.M.; Fynbo, H.O.U.; Giovinazzo, J.; Johansen, J.G.; Thomas, J.C.; Jokinen, A.; Jonson, B.; Kurturkian-Nieto, T.; Nilsson, T.; Perea, A.; Pesudo, V.; Picado, Esteban; Riisager, K.; Saastamoinen, A.; Tengblad, O.; Van del Walle, J. (Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics, 2014-10-07)
      We present for the first time precise spectroscopic information on the recently discovered decay mode β-delayed 3p-emission. The detection of the 3p events gives an increased sensitivity to the high energy part of the ...

    • Evaluating SODA for Indo-Pacific Ocean decadal climate variability studies 

      Vargas-Hernández , José Mauro ; Wijffels, Susan; Meyers, Gary; Holbrook, Neil (Journal of Geophysical Research: Oceans, 2014-10-31)
      Estimates of changes in upper ocean temperature, heat content, and sea level are dependent on the coverage of subsurface observations in space and time. Historically, these data are sparse, which has limited our understanding ...

    • Sistema Nacional de Monitoreo de Tsunamis 

      Chacon-Barrantes, Silvia (Revista Universidad en Diálogo vol.5 no.2 101-111 2015, 2015)
      En cualquier cuerpo de agua, y más específicamente en cualquier océano, se pude generar un tsunami. Por esto, nuestro país, al tener dos costas, se encuentra expuesto a ellos. Los tsunamis no se pueden evitar ni pronosticar ...

    • Evaluación de fuentes tsunamigénicas en el sur de Centroamérica y la generación de mapas de evacuación en la costa Pacífica de Costa Rica  

      Zamora-Sauma, Natalia; Chacon-Barrantes, Silvia (Geo - Network of Latinomerican - German alumi (GOAL) 7-10 2015, 2015)
      Costa Rica se encuentra en el extremo oeste de la placa Caribe, en el sur de América Central. En esta región se da la interacción de cuatro placas tectónicas. La placa Cocos se subduce bajo la placa Caribe y la microplaca ...

    • The rip current hazard in Costa Rica 

      Arozarena, Isabel; Houser, Chris; Gutiérrez-Echeverría, Alejandro; Brannstrom, Christian (2015-01-31)
      Deaths from rip currents are a major hazard on global beaches, but few data are available at a national scale to support the development of appropriate intervention programs. Analysis of data from the Judicial Investigation ...

    • Decadal Characterization of Indo-Pacific Ocean Subsurface Temperature Modes in SODA Reanalysis 

      Vargas-Hernández , José Mauro ; Wijffels, Susan; Meyers, Gary; Belo Couto, André; Holbrook, Neil (American Meteorological Society, 2015-04-29)
      Studies of decadal-to-multidecadal ocean subsurface temperature variability are fundamental to improving the understanding of low-frequency climate signals. The present study uses the Simple Ocean Data Assimilation (SODA) ...

    • Hidrography and river plumes in Golfo Dulce, South Pacific of Costa Rica 

      Rincón - Alejos, Fernando; Ballestero Sakson, Daniel (Universidad de Costa Rica, 2015-07)
      Oceanographic variables at 33 stations distributed in Golfo Dulce, Costa Rica, during the dry and rainy seasons between 2009 and 2010, were analyzed with CTD profiles, where salinity, temperature, sigma-T and currents were ...

    • Slow westward movement of salinity anomalies across the tropical South Indian Ocean 

      Vargas-Hernández , José Mauro ; Wijffels, Susan; Meyers, Gary; Holbrook, Neil (American Geophysical Union, 2015-08-06)
      Decadal salinity variability is an important characteristic of the ocean. It characterizes differences in evaporative and precipitation fluxes at the surface, and in the subsurface it contributes to steric sea level change ...

    • Electrochemical Hydrogen Oxidation on Pt(100): a Combined Direct Molecular Dynamics/Density Functional Theory Study 

      Santana, Juan A.; Saavedra-Arias, José; Ishikawa, Yasuyuki (Electrocatalysis, 2015-08-09)
      We have studied the hydrogen oxidation reaction on various catalytic sites at the water/Pt(100) interface with first-principles direct molecular dynamics and minimum energy pathway calculations. The calculations indicate ...