Now showing items 1-20 of 29

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

      Vargas, William E.; Clark, Neville; 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 ...
    • 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 ...
    • Evaluación de fuentes tsunamigénicas en el sur de Centroamérica y la generación de mapas de evacuación en la costa Pacífica de Costa Rica  

      Chacon-Barrantes, Silvia; Zamora-Sauma, Natalia (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 ...
    • 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 ...
    • 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 ...
    • Hidrography and river plumes in Golfo Dulce, South Pacific of Costa Rica 

      Ballestero Sakson, Daniel; Rincón - Alejos, Fernando (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 ...
    • Polymer gel dosimeter based on itaconic acid 

      Chacón, David; Mattea, Facundo; Vedelago, José; VALENTE, MAURO; Strumia, Miriam (2015-11)
      A new polymeric dosimeter based on itaconic acid and N, N'-methylenebisacrylamide was studied. The preparation method, compositions of monomer and crosslinking agent and the presence of oxygen in the dosimetric system were ...
    • Evaluación de la peligrosidad del tsunami de Chile del 16 de setiembre del 2015 para Costa Rica 

      Chacon-Barrantes, Silvia (Revista Ciencias Marinas y Costeras vo.8 no.1 113-128 2016, 2016)
      A Mw 8.3 earthquake took place in Chile on September 16th, 2015 causing a local tsunami. As a consequence, this earthquake prompted the National Tsunami Monitoring System (SINAMOT) in Costa Rica to conduct a tsunami hazard ...
    • Metodología para la Evaluación de Rutas de Evacuación en caso de Tsunami Aplicado a la Costa del Pacífico Norte y Central de Costa Rica 

      Chacon-Barrantes, Silvia; Rivera, Fabio; Arozarena Llopis, Isabel; Barrantes Castillo, Gustavo (Revista en Torno a la Prevención no.16 17-26 2016, 2016)
      Se ha diseñado un método con el objetivo de elaborar una cartografía de rutas de evacuación en caso de tsunami a escala 1:10.000, basado en las directrices establecidas por la Comisión Europea. Las áreas de estudio son las ...
    • Characterization of the VARIAN®PaxScan 2020+ flat panel detector for quantitative X-ray imaging 

      Geser, Federico Alejandro; Chacón, David; Figueroa, R.; Malano, F.; Santibañez, M.; Valente, M. (X-Ray Spectrometry vol.45 no.3 169-175 2016, 2016-02-19)
      In this work, the response of the VARIAN® PaxScan 2020+ flat panel detector was characterized in terms of spatial resolution and uniformity across the detection area along with detection efficiency for photon beams from ...
    • Variations in the geostrophic circulation pattern and thermohaline structure in the Southeast Central American Pacific 

      Ballestero, Daniel; Brenes, Carlos; BENAVIDES, ROSARIO; Salazar, Juan Pablo; Murillo, Gustavo (Revista de Biologia Tropical vol.64 suppl.1 s121-s134 2016, 2016-03)
      This study was conducted in the southeast region of the Central American Pacific, an area of great oceanographic importance due to the presence of various upwelling phenomena and the direct influence of the ENSO on its ...
    • Experimental validation of gallium production and isotope-dependent positron range correction in PET 

      Fraile, L.M.; Herraiz, J.L.; Cal-González, J.; Corzo, P.M.G.; España, S.; Herranz, E.; Pérez-Liva, M.; Picado, Esteban; Vicente, E.; Muñoz-Martín, A.; Vaquero, J.J. (Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment vol.814 110-116 2016, 2016-04-01)
      Positron range (PR) is one of the important factors that limit the spatial resolution of positron emission tomography (PET) preclinical images. Its blurring effect can be corrected to a large extent if the appropriate ...