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  • Coincidence summing corrections for volume samples using the PENELOPE/penEasy Monte Carlo code

     Vargas Drechsler, Arturo; Camps Brunés, Anna; Serrano Carreño, Maria Isabel; Duch Guillen, Maria Amor
    Applied radiation and isotopes
    Date of publication: 2014-05
    Journal article

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    The coincidence summing correction factors estimated with penEasy, a steering program for the Monte Carlo simulation code PENELOPE, and with penEasy-eXtended, an in-house modified version of penEasy, are presented and discussed for 152Eu and 134Cs in volume sources. The geometries and experimental data were obtained from an intercomparison study organized by the International Committee for Radionuclide Metrology (ICRM). A significant improvement in the results calculated with PENELOPE/penEasy was obtained when X-rays are included in the 152Eu simulations.

    The coincidence summing correction factors estimated with penEasy, a steering program for the Monte Carlo simulation code PENELOPE, and with penEasy-eXtended, an in-house modified version of penEasy, are presented and discussed for 152Eu and 134Cs in volume sources. The geometries and experimental data were obtained from an intercomparison study organized by the International Committee for Radionuclide Metrology (ICRM). A significant improvement in the results calculated with PENELOPE/penEasy was obtained when X-rays are included in the 152Eu simulations.

  • Validation of aerosol low-level activities by comparison with a deep underground laboratory

     Camacho Garcia, Antonia; Laubenstein, M.; Vargas Drechsler, Arturo; Serrano Carreño, Maria Isabel; Vallés, I.; Plastino, W.; Duch Guillen, Maria Amor
    Applied radiation and isotopes
    Date of publication: 2014-05
    Journal article

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    The activitiesonair filters oftheradionuclides 40K and 137Cs weremeasuredinanaboveground laboratoryandcomparedwiththeactivitiesmeasuredinanundergroundlaboratory.Theaverage relativedifferenceswerelowerthan20%for 137Cs and 40K. Thetemporalseriesoftheseradionuclidesin the period2006¿2010arealsopresented.Theseresultsformthebaselineoftheseradionuclidesinthe studied period,andareparticularlyinterestingbecausetheycorrespondtotheradioactivebackgroundin Barcelona beforetheFukushimaaccident.

    The activitiesonair filters oftheradionuclides 40K and 137Cs weremeasuredinanaboveground laboratoryandcomparedwiththeactivitiesmeasuredinanundergroundlaboratory.Theaverage relativedifferenceswerelowerthan20%for 137Cs and 40K. Thetemporalseriesoftheseradionuclidesin the period2006–2010arealsopresented.Theseresultsformthebaselineoftheseradionuclidesinthe studied period,andareparticularlyinterestingbecausetheycorrespondtotheradioactivebackgroundin Barcelona beforetheFukushimaaccident.

  • Lagrangian models for nuclear studies: exemples and applications

     Arnold, Delia; Seibert, P.; Nagai, H.; Wotawa, G.; Skomorowski, P.; Baumann-Stanzer, K.; Polreich, E.; Langer, M.; Jones, A.; Hort, M.; Andronopoulos, S.; Bartzis, J.G.; Davakis, E.; Kaufmann, P.; Vargas Drechsler, Arturo
    Date of publication: 2013-03
    Book chapter

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  • Gamma summing peak correction of volume samples using the PENELOPE/ penEasy Monte Carlo code

     Vargas Drechsler, Arturo; Camp, A.; Serrano Carreño, Maria Isabel; Duch Guillen, Maria Amor
    International Conference on Radionuclide Metrology and its Applications
    Presentation's date: 2013-06
    Presentation of work at congresses

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  • Continuos atmospheric 222Rn concentration measurements to study surface-air exchange at the station of Gredos and Iruelas, in Central Spain

     Grossi, Claudia; Morguí, Josep Anton; Àgueda Costafreda, Alba; Batet Torrell, Oscar; Curcoll, Roger; Arias, Rosa; Arnold, Delia; Ealo, Marina; Nofuentes, Manel; Occhipinti, Paola; Sánchez-García, Laura; Vargas Drechsler, Arturo; Rodó, Xavier
    European Geosciences Union General Assembly
    Presentation's date: 2013-04
    Presentation of work at congresses

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  • Application of atmospheric transport models at the new atmospheric Ebre Delta station (ClimaDat Network) in Eastern Spain

     Grossi, Claudia; Curcoll, Roger; Morguí, Josep Anton; Àgueda Costafreda, Alba; Ealo, Marina; Occhipinti, Paola; Nofuentes, Manel; Sánchez- García, L.; Batet Torrell, Oscar; Vargas Drechsler, Arturo; Vermeulen, A.T.; Rodó, Xavier
    International Conference on Harmonisation within Atmospheric Dispersion Modelling for Regulatory Purposes
    Presentation's date: 2013-05
    Presentation of work at congresses

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    The Ebre Delta atmospheric station (DEC3) was installed in Eastern Spain, within the framework of the ClimaDat project of the Institut Català de Ciències del Clima (IC3). This station offers continuous measurements of greenhouse gases and tracers concentrations (CO2, CH4, CO, N2O and SF6), along with atmospheric concentrations of the natural radioactive gas 222Rn. Meteorological parameters, such as humidity, temperature, wind speed and wind direction are also measured at DEC3 site. This qualitative analysis aims to use the FLEXPART and the HYSPLIT models, with meteorological input of ECMWF and with spatial resolution of 0.2 degrees, to perform back trajectories at DEC3 station and qualitatively analyze how different air masses coming from the Northern Western Europe or from the Mediterranean Sea influence observed gases concentrations.

    The Ebre Delta atmospheric station (DEC3) was installed in Eastern Spain, within the framework of the ClimaDat project of the Institut Català de Ciències del Clima (IC3). This station offers continuous measurements of greenhouse gases and tracers concentrations (CO2, CH4, CO, N2O and SF6), along with atmospheric concentrations of the natural radioactive gas 222Rn. Meteorological parameters, such as humidity, temperature, wind speed and wind direction are also measured at DEC3 site. This qualitative analysis aims to use the FLEXPART and the HYSPLIT models, with meteorological input of ECMWF and with spatial resolution of 0.2 degrees, to perform back trajectories at DEC3 station and qualitatively analyze how different air masses coming from the Northern Western Europe or from the Mediterranean Sea influence observed gases concentrations.

  • Radon tower measurements in a Spanish coastal site for lagrangian particle dispersion model inter-comparison and performance assessment at the mesoscales

     Vargas Drechsler, Arturo; Arnold, Delia; Hernández-Ceballos, Miguel Ángel; Adame, José Antonio; Morton, Don; Grossi, Claudia; Schicker, Irene; De la Morena, Benito; Bolivar, Juan Pedro; Gil, Manuel
    European Geosciences Union General Assembly
    Presentation's date: 2013-04
    Presentation of work at congresses

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  • Atmospheric Rn-222 concentration and source term at El Arenosillo 100 m meteorological tower in southwest Spain

     Grossi, Claudia; Arnold Arias, Delia; Adame, José Antonio; Lopez Coto, I.; Bolivar, J.P; de la Morena, Benito Arturo; Vargas Drechsler, Arturo
    Radiation measurements
    Date of publication: 2012-02
    Journal article

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  • Influence of the Fukushima Dai-ichi nuclear accident on Spanish environmental radioactivity levels

     Baeza, A.; Corbacho, J.A.; Rodríguez, Alicia; Galván, J.; García Tenorio, R.; Manjón, G.; Mantero, Juan; Vioque, I.; Arnold Arias, Delia; Grossi, Claudia; Serrano Carreño, Maria Isabel; Valles Murciano, Maria Isabel; Vargas Drechsler, Arturo
    Journal of environmental radioactivity
    Date of publication: 2012-12
    Journal article

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    This paper presents measurements of the effect of the atmospheric radioactive release from the Fukushima Dai-ichi nuclear power station at three sites belonging to the Spanish environmental monitoring system. Measured values varied depending on the locations of the sites in Spain and their respective climatic characteristics. 134Cs, 136Cs, 137Cs, 131I, and 132Te activity concentrations in filter samples were studied and associated levels of 131I fallout were estimated from wet and dry deposition. Particulate aerosol activity concentrations ranges, in mBq/m3, were 1.63e3080 (131I), 2.8e690 (137Cs), 1.3e620 (134Cs) and 3.6e330 (132Te), while the associated 131I fallout was roughly estimated to be less than 20 Bq/m2, Gaseous 131I was also detected and the 131I-gaseous/131I-total ratio increased at the three stations from approximately 0.75 at the end of March to 0.85e0.9 during the first few days of April. Finally, the presence of 131I in some crucial parts of the food chain was also studied. 131I was detected in samples from goat’s and cow’s milk (maximum levels of 1.11 Bq/L) and in broadleaf plants (maximum level 1.42 Bq/kg).

  • Visión de un auditor técnico

     Vargas Drechsler, Arturo; Duch Guillen, Maria Amor; Valles Murciano, Maria Isabel; Camacho Garcia, Antonia; Serrano Carreño, Maria Isabel; Blazquez Perez, Sonia Margarita
    Jornadas sobre Calidad en el Control de la Radiactividad Ambiental
    Presentation's date: 2012-05-30
    Presentation of work at congresses

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  • 222Rn as a tracer for air mass transport Characterization at 100-m-high tower in the south-west Spanish coast  Open access

     Grossi, Claudia
    Defense's date: 2012-03-30
    Department of Physics and Nuclear Engineering, Universitat Politècnica de Catalunya
    Theses

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    Es los últimos años se han llevado a cabo importantes trabajos de investigación, tomando el gas radón como elemento de evaluación en modelos de transporte atmosférico y así estimar el flujo de partículas. Además la utilización del radón ha encontrado otras aplicaciones en el estudio de las emisiones de gases de efecto invernadero a escala regional; en la actualidad en algunos proyectos europeos como el Ttorch y el InGOS se realizan medidas en continuo de radón atmosférico junto con otros gases de efecto invernadero. En este marco de actuación, la presente tesis quiere caracterizar una nueva estación de radón atmosférico en El Arenosillo, en la cuenca sur de España, llevando a cabo medidas de radón a diferentes alturas gracias a una torre de 100 metros. Además otro objetivo de la tesis ha sido la caracterización del flujo de radón en esta área geográfica. Este trabajo incluye, además de un análisis de las concentraciones de radón mediante un sistema de esfera por electrodeposición, las observaciones de los parámetros meteorológicos en la estación de El Arenosillo. El flujo de radón en la misma área ha sido estudiado tanto con métodos directos como indirectos. Para poder estudiar el origen de las masas de aire ricas o pobres en radón que llegan a la estación, se ha realizado un análisis cualitativo con retro trayectorias.

    An intensive research has been carried out during the last decade on a global scale using 222Rn for global atmospheric transport models evaluation as well as for estimating fluxes of atmospheric constituents. Furthermore, a new application in recent years has been the use of radon for estimating regional scale greenhouse gas emission. Nowadays, some European projects and data base, such as the TTtorch and the InGOS, are carrying out continuous measurements of the atmospheric 222Rn gas concentrations together with others greenhouse gases measurements at tall towers. In this framework, the present thesis aims to characterize a new atmospheric radon station at the El Arenosillo station, in the Southwest coast of Spain, by performing atmospheric radon concentration measurements at different heights thank to the presence of a 100 m tall tower. Furthermore, the study wants to properly characterize the radon flux background in this area. Therefore, this work includes the analysis of atmospheric radon gas concentration by electrostatic chamber method under seasonal meteorological parameters at two heights and the characterization of the radon flux of the El Arenosillo station area by direct and by indirect radon flux inventories. Finally, a qualitative back trajectories analysis has been performed to study the origin of air masses rich or poor in radon and to confirm the specific regions as radon source regions. During the Autumn season the geometric mean of radon data at 10 m is 4.48 Bq m-3 with a st. dev. of 2.03 Bq m-3 .and at 100 m is 2.93 with 1.98 Bq m-3 . In the Winter season the geometric mean of radon concentration data at 10 m is 3.82 Bq m-3 with a st. dev. of 2.34. At 100 m the geometric mean is and 3.06 Bq m-3 with 1.72. These radon concentrations are not as high as would be expected for winter and can be explained by the high frequency of radon-poor air masses coming from the Atlantic Ocean and from South Portugal during this season. The Spring season shows a geometric mean of radon concentration data at 10 m of 3.60 Bq m-3 with a st. dev. equal to 2.18 and at 100 m is 2.05 Bq m-3 with 2.20. These average radon concentrations indicate good atmospheric layer separation during this season. Finally, during the summer season the radon concentration data at 10 m is 2.64 Bq m-3 with a st. dev. of 1.86. At 100 m height, the geometric mean is 2.41 Bq m-3 with standard deviation of 1.88. These values indicate good statistics for this season and a strong mixing layer, as was expected for an unstable summer. The local radon flux contribution at el Arenosillo station is really low, of 5.3 ± 1.8 Bq m-2 h-1 which means that the atmospheric radon concentrations data will not have any strong noisly radon background and can be used in order to estimate remote radon source. The 222Rn flux observed from the close phosphogypsum pile and confirmed by different monitors and methods shows an average value of 33.5 ± 5.6 Bq m-2 h-1 , which is really low if compared with material 226Ra activity concentration of 550 Bq kg-1. The experimental analysis of atmospheric radon behaviour at El Arenosillo station has pointed out the existence of specific regions poor/rich in radon where the air masses use to come from such as the Sierra Morena system, the Betic system, the North of Portugal, the Atlantic Ocean, the Marocco area and the Guadalquivir Valley. A back-trajectory analysis has been performed by the transport model HYSPLIT4 in order to confirm the air masses origin from specific sectors and to justify the poor/rich radon concentrations transported and measured at El Arenosillo station.

  • Caracterización de Aerosoles Radiactivos en la Ciudad de Barcelona  Open access

     Gonzalez De perosanz, Miguel Angel
    Defense's date: 2012-03-19
    Department of Physics and Nuclear Engineering, Universitat Politècnica de Catalunya
    Theses

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    This research work has been developed in order to contribute to the knowledge of radioactive aerosol characteristics and their behaviour in the atmosphere. The study was carried out in the city of Barcelona. The Instituto de Técnicas Energéticas (INTE) of the Universidad Politécnica de Cataluña (UPC) has a wide variety of devices for measuring radioactive aerosols. Therefore, a bibliographical study of natural and artificial atmospheric aerosols was developed. New devices were acquired during the couse of this work: a device for the measurement of the dimensional spectrum of radioactive aerosol particles and another for the measurement of dry and wet deposition. The radionuclides analyzed in this work are the following: Rn-222 progeny, Be-7, K-40, Pb-210 and Cs-137. The information obtained by means of these devices has enabled us to develop a statistical analysis, that might be used to take decisions within the framework of environmental radiological surveillance. Correlations between the radioactive aerosols and meteorological parameters were also studied in order to draw conclusions about radioactive aerosol behaviour. These correlations might be useful for developing studies at other locations. The study of the activity median aerodynamic diameter of the radioactive aerosol particles allowed us to estimate the mean residence time and origin of the aerosol particles. The measurements developed with the dry and wet deposition devices provided us with information on the deposition velocities of some radioactive aerosols for the first time in the city of Barcelona. Cs-137 detection was classified according to the possible origin of different air masses reaching Barcelona. Therefore, with such information it was possible to analyze the probability of measuring re-suspended Cs-137 transported by air masses from different regions. Finally, the appendices include the resolution of basic general equations that enable us to calculate the concentrations of radioactive aerosol concentrations in the air for the measurement devices that are available at the INTE.

    El trabajo de investigación realizado pretende contribuir al conocimiento de las características de los aerosoles radiactivos, así como a su comportamiento en la atmósfera. El estudio descrito en este trabajo se ha llevado a cabo en la ciudad de Barcelona, donde el Instituto de Técnicas Energéticas (INTE) de la Universidad Politécnica de Cataluña (UPC) dispone de una gran variedad de equipos para la medida de los aerosoles radiactivos. Así, se ha realizado un estudio bibliográfico del grupo de aerosoles naturales y artificiales que se pueden encontrar en la atmósfera. La instrumentación mencionada ha sido ampliada durante la realización de la tesis. Concretamente, se ha puesto en marcha un equipo para la medida del espectro dimensional de las partículas que componen el aerosol radiactivo y otro para la medida de la deposición seca y húmeda. El grupo de radionucleidos que ha sido analizado comprende los descendientes de vida corta del Rn-222, Be-7, K-40, Pb-210 y Cs-137. El volúmen de información obtenida mediante estos equipos ha permitido llevar a cabo un análisis estadístico, que puede ser utilizado como soporte para la toma de decisiones en el marco de las redes de vigilancia radiológica ambiental. También se han estudiado las correlaciones de los aerosoles radiactivos con diferentes parámetros meteorológicos, con la finalidad de obtener conclusiones acerca del comportamiento de los aerosoles radiactivos en Barcelona y que, así mismo, puede ser de utilidad para estudios en otras localizaciones. El estudio del crecimiento del tamaño de las partículas del aerosol radiactivo ha permitido estimar el tiempo de residencia de los aerosoles radiactivos. Además, a partir del valor del tiempo de residencia se ha podido obtener información sobre el “envejecimiento” y estimar el origen del aerosol. Las medidas realizadas con el monitor de deposición seca y húmeda han llevado a conocer, por primera vez en la ciudad de Barcelona, la velocidad de deposición de algunos aerosoles radiactivos. Las detecciones de Cs-137 se han clasificado de acuerdo con posibles origenes de masas de aire que alcanzan la ciudad de Barcelona. Así, con dicha información se ha podido analizar la probabilidad de que la masa de aire transporte Cs-137 resuspendido de diferentes regiones. Finalmente, se ha incluido en los anexos de la tesis la solución de las ecuaciones básicas generales que permiten calcular las concentraciones en el aire de los distintos aerosoles radiactivos para cada uno de los equipos de medida existentes en el INTE.

  • PLAN DE ACCIONES DE REMEDIO EN VIVIENDAS Y LUGARES DE TRABAJO CON EXPOSICIONES DE RADÓN Y TORÓN

     Vargas Drechsler, Arturo; Jover Fontanals, Cristina
    Participation in a competitive project

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  • Inter-comparison of different direct and indirect methods to determine radon flux from soil

     Grossi, Claudia; Vargas Drechsler, Arturo; Camacho Garcia, Antonia; Lopez Coto, I.; Bolivar, J.P; Xia, Yu; Conen, F.
    Radiation measurements
    Date of publication: 2011-01
    Journal article

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    The physical and chemical characteristics of radon gas make it a good tracer for use in the application of atmospheric transport models. For this purpose the radon source needs to be known on a global scale and this is difficult to achieve by only direct experimental methods. However, indirect methods can provide radon flux maps on larger scales, but their reliability has to be carefully checked. It is the aim of this work to compare radon flux values obtained by direct and indirect methods in a measurement campaign performed in the summer of 2008. Different systems to directly measure radon flux from the soil surface and to measure the related parameters terrestrial g dose and 226Ra activity in soil, for indirect estimation of radon flux, were tested. Four eastern Spanish sites with different geological and soil characteristics were selected: Teruel, Los Pedrones, Quintanar de la Orden and Madrid. The study shows the usefulness of both direct and indirect methods for obtaining radon flux data. Direct radon flux measurements by continuous and integrated monitors showed a coefficient of variation between 10% and 23%. At the same time, indirect methods based on correlations between 222Rn and terrestrial g dose rate, or 226Ra activity in soil, provided results similar to the direct measurements, when these proxies were directly measured at the site. Larger discrepancies were found when proxy values were extracted from existing data bases. The participating members involved in the campaign study were the Institute of Energy Technology (INTE) of the Technical University of Catalonia (UPC), Huelva University (UHU), and Basel University (BASEL).

  • Tracking of Airborne Radionuclides from the Damaged Fukushima Dai-Ichi Nuclear Reactors by European Networks

     Vargas Drechsler, Arturo; [et, al]
    Environmental science and technology
    Date of publication: 2011-09-15
    Journal article

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  • Xenon-133 and caesium-137 releases into the atmosphere from the Fukushima Dai-ichi nuclear power plant: Determination of the source term, atmospheric dispersion, and deposition

     Stohl, A.; Seibert, P.; Wotawa, G.; Arnold Arias, Delia; Burkhart, J.; Eckhardt, S.; Tapia Fernandez, Carlos; Vargas Drechsler, Arturo; Yasunari, T. J.
    Atmospheric chemistry and physics discussions
    Date of publication: 2011
    Journal article

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  • Analysis of the representativeness of backward atmospheric transport modelling at different resolutions at the Takasaki RN38 IMS station

     Arnold Arias, Delia; Pino Gonzalez, David; Vargas Drechsler, Arturo
    Comprehensive Nuclear-Test-Ban Treaty: Science & Technology
    Presentation's date: 2011-06-08
    Presentation of work at congresses

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  • Analysis of radon origin by backward atmospheric transport modelling

     Arnold Arias, Delia; Vargas Drechsler, Arturo; Vermeulen, A.T.; Verheggen, B.; Seibert, P.
    Atmospheric environment
    Date of publication: 2010-02-23
    Journal article

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    This work shows how ambient radon concentrations measured at Cabauw station in central Netherlands are influenced by transport from different regions under typical transport conditions occurring during April and November, 2007 by means of atmospheric Lagrangian particle dispersion modelling in a receptor-oriented approach. Four specific regions have been isolated to assess their contribution to the modelled radon ambient concentrations at Cabauw, and two different radon flux assumptions. Westerly flows coming from the ocean are poor in radon and do not increase radon air concentrations unless there is some fetch over the British Isles. Continental transport, mainly from eastern and southern Europe, significantly increases radon background concentrations, reaching increments of 3 Bq m-3. A constant 0.66 atoms cm-2 s-1 radon flux over land and zero over water bodies is a good approximation for the source term in order to study regional contributions and modulation of the radon background.

  • Analysis of the representativeness of the takasaki gunma (RN38) ims station using increasing resolution meterological modelling

     Vargas Drechsler, Arturo; Arnold Arias, Delia
    International Conference on Environmental Radioactivity : New Frontiers and Developments
    Presentation's date: 2010-10-25
    Presentation of work at congresses

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  • Set-up of a radon monitoring station in a 100 m height tower in the southern coast of Spain

     Grossi, Claudia; Vargas Drechsler, Arturo; Arnold Arias, Delia; López-Coto, Israel; Bolivar, Juan Pedro; Adame, José Antonio; de la Morena, Benito Arturo
    Conference on Protection Against Radion at Home at a Work
    Presentation's date: 2010-09-13
    Presentation of work at congresses

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  • Radon air concentration at a tall tower at the southern coast of Spain

     Vargas Drechsler, Arturo; Arnold Arias, Delia
    GHG-Europe : Workshop on Top-Down atmospheric constraints of the European GHGs budget
    Presentation's date: 2010-11-23
    Presentation of work at congresses

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  • Characterization of a LaBr3 gamma-ray spectrometer for ambient dose equivalent rate H*(10)

     Vargas Drechsler, Arturo; Roig Costa, Maria
    International Conference on Environmental Radioactivity : New Frontiers and Developments
    Presentation's date: 2010-10-25
    Presentation of work at congresses

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  • INTE-UPC Activities

     Vargas Drechsler, Arturo; Serrano Carreño, Maria Isabel
    Workshop of the Gamma-Ray Spectrometry Working Group
    Presentation's date: 2010-10-19
    Presentation of work at congresses

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  • 2009 SGR 276 - GRUP DE RECERCA CONSOLIDAT DOSIMETRIA I RADIOFÍSICA MÈDICA / 2010

     Vargas Drechsler, Arturo; Ortega Aramburu, Miguel Javier; Ginjaume Egido, Merce; Duch Guillen, Maria Amor; Sempau Roma, Josep
    Participation in a competitive project

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  • Activity size distributions for long-lived radon decays products in aerosols collected in Barcelona (Spain)

     Camacho Garcia, Antonia; Valles Murciano, Maria Isabel; Vargas Drechsler, Arturo; González Perosanz, M.; Ortega Aramburu, Miguel Javier
    Applied radiation and isotopes
    Date of publication: 2009-05-05
    Journal article

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    The activity median aerodynamic diameters(AMADs)oflong-lived radon decay product(210Pb, 210Po) in aerosols collected in the Barcelona area(NortheastSpain)during the period from April 2006 toFebruary 2008 arepresented.The 210Po mean AMAD was 420nm, while the 210Pb mean AMAD was 500nm. The temporal evolution of 210Pb and 210Po AMADs shows maxima in autumn and winter and minima in spring and summer. 210Pb AMAD are being used to estimate the mean-residence time of atmospheric aerosols.

  • Analysis of outdoor radon pregeny concentration measured at the Spanish radioactive aerosol automatic monitoring network

     Arnold Arias, Delia; Vargas Drechsler, Arturo; Ortega Aramburu, Miguel Javier
    Applied radiation and isotopes
    Date of publication: 2009-05-05
    Journal article

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    An analysis of 10-year radon progeny data,provided by the Spanish automatic radiological surveillance network, in relation to meteorology is presented. Results show great spatial variability depending mainly on the station location and thus,the surrounding radon exhalation rate. Hourly averages show the typical diurnal cycle with an early morning maximum and a minimum at noon,except for one mountain station, which shows an inverse behaviour. Monthly averaged values show lower concentrations during months with higher atmospheric instability.

  • Study of the atmospheric radon concentration dynamics at the Spanish radiological surveillance stations and its application to air mass movements.

     Arnold Arias, Delia
    Defense's date: 2009-07-14
    Institute of Energy Technology, Universitat Politècnica de Catalunya
    Theses

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  • DESARROLLO Y VALIDACIÓN DE MODELOS AVANZADOS DE DISPERSION ATMOSFÉRICA

     Camacho Garcia, Antonia; Arnold Arias, Delia; Valles Murciano, Maria Isabel; Cortes Rossell, Guillem Pere; Ortega Aramburu, Miguel Javier; Vargas Drechsler, Arturo
    Participation in a competitive project

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  • Dose assessment at a phosphate industry landfill using solid state detectors

     Ortega Aramburu, Miguel Javier; Duch Guillen, Maria Amor; Vargas Drechsler, Arturo; Lopez, N
    Radiation measurements
    Date of publication: 2008-06
    Journal article

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  • Short-versus long-term radon detectors: a comparative study in Galicia, NW Spain

     Ruano-Ravina, A; Bernández, Castro M; Sande-Meijide, M; Vargas Drechsler, Arturo; Barros-Dios, J M
    Journal of environmental radioactivity
    Date of publication: 2008-05
    Journal article

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  • Influence of natural radioactive aerosols on artificial radioactiviy detection in the Spanish surveillance networks

     Vargas Drechsler, Arturo; Arnold Arias, Delia; Ortega Aramburu, Miguel Javier; Parages, G
    Applied radiation and isotopes
    Date of publication: 2008-06
    Journal article

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  • Contribución al estudio del comportamiento y origen de los aerosoles radiactivos medidos en la ciudad de Barcelona (España)

     Ángel González, Miguel
    Defense's date: 2008-10-01
    Institute of Energy Technology, Universitat Politècnica de Catalunya
    Theses

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  • Acvitity size distribution for long-lived radon decay products in aerosols collected in Barcelona (Spain)

     Camacho Garcia, Antonia; Valles Murciano, Maria Isabel; Vargas Drechsler, Arturo; González, M; Ortega Aramburu, Miguel Javier
    International Conference on Radionuyclide Metrology Low-Level Radioactivity Measurement Techniques
    Presentation of work at congresses

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  • Comparison of the dispersion model in RODOS-LX and MM5-v3.7-flexpart (v6.2). A case study of the nuclear power plant of Almaraz

     Vargas Drechsler, Arturo
    HARMO 12
    Presentation's date: 2008-10-06
    Presentation of work at congresses

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  • Estimation of mean aerosolo residence times using radioactive aerosols. Application in the city of Barcelona

     Vargas Drechsler, Arturo
    RECTA 2008
    Presentation's date: 2008-06-30
    Presentation of work at congresses

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  • Receptor-oriented dispersion modelling of radon in Spain as a natural tracer for model validation

     Arnold Arias, Delia; Vargas Drechsler, Arturo; Seibert, Petra
    European Geosciences Union General Assembly
    Presentation of work at congresses

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  • Analysis of outdoor radon progeny concentration measured at the spanish radioactive aerosol automatic monitoring network

     Vargas Drechsler, Arturo; Ortega Aramburu, Miguel Javier; Arnold Arias, Delia
    International Conference on Radionuyclide Metrology Low-Level Radioactivity Measurement Techniques
    Presentation of work at congresses

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  • Caracterización radiológica de un depósito de residuos industriales en Flix (Tarragona). Evaluación de la dosis recibida por los trabajadores

     Ortega Aramburu, Miguel Javier; Duch Guillen, Maria Amor; Valles Murciano, Maria Isabel; Vargas Drechsler, Arturo; López, N
    Radioprotección: revista de la Sociedad Española de Protección Radiológica
    Date of publication: 2007-09
    Journal article

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  • Influence of environmental changes on integrating radon detectors: results of an intercomparison exercise

     Vargas Drechsler, Arturo; Ortega Aramburu, Miguel Javier
    Radiation protection dosimetry
    Date of publication: 2007-03
    Journal article

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  • Development and operational performance of a single calibration chamber for radon detectors

     Lopez-Coto, I; Bolivar, J P; Mas, J L; Garcia-Tenorio, R; Vargas Drechsler, Arturo
    Nuclear instruments and methods in physics research. Section A, accelerators SP
    Date of publication: 2007-09
    Journal article

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  • Application of solid state detectors for short-term characterisation of a posphate industry landfill

     Ortega Aramburu, Miguel Javier; Duch Guillen, Maria Amor; Vargas Drechsler, Arturo; López, N
    15 th Internatiopnal Conference on Solid Sate Dosimetry
    Presentation of work at congresses

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  • Application of back trajectories using flextra to identify the origin of 137Cs measured in the city of Barcelona

     Vargas Drechsler, Arturo; Ortega Aramburu, Miguel Javier; Seibert, Petra; Arnold Arias, Delia
    NATO International Technical Meeting on Air Pollution Modelling and Its Application
    Presentation's date: 2007-09-25
    Presentation of work at congresses

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  • Desarrollos Tecnológicos hacia un ciclo de agua urbano autosostenible (SOSTAQUA)

     Camacho Garcia, Antonia; Valles Murciano, Maria Isabel; Serrano Carreño, Maria Isabel; Blazquez Perez, Sonia Margarita; Vargas Drechsler, Arturo
    Participation in a competitive project

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  • Desarrollo del plan de calibración externa. Versión 7

     Ginjaume Egido, Merce; Roig Costa, Maria; Vargas Drechsler, Arturo; Ortega Aramburu, Miguel Javier
    Date: 2007-05
    Report

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  • Gestión del inventario y de la operaciones de control de calida. Versión 2

     Vargas Drechsler, Arturo; Ginjaume Egido, Merce; Ortega Aramburu, Miguel Javier
    Date: 2007-05
    Report

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  • Comprobación de los espesores de los filtros de Cu y Al para la caracterización de los haces de rayos X

     Ginjaume Egido, Merce; González, MA; Vargas Drechsler, Arturo; Ortega Aramburu, Miguel Javier
    Date: 2007-05
    Report

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  • Comprobación de la estabilidad del patrón secundario beta Bushler-Amersham. Versión 3

     Ginjaume Egido, Merce; Vargas Drechsler, Arturo; Ortega Aramburu, Miguel Javier
    Date: 2007-05
    Report

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  • Medida de la 1ª y 2ª capa de hemirreducción de los haces de rayos X de baja energía para mamografía. Versión 1

     González, MA; Ginjaume Egido, Merce; Vargas Drechsler, Arturo; Ortega Aramburu, Miguel Javier
    Date: 2007-05
    Report

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  • Estudio de la linealidad del equipo de rayos X de baja energía para mamografía. Versión 1

     González, MA; Ginjaume Egido, Merce; Vargas Drechsler, Arturo; Ortega Aramburu, Miguel Javier
    Date: 2007-05
    Report

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