WorldCat Identities

Sánchez-Vila, Xavier

Overview
Works: 126 works in 199 publications in 3 languages and 1,095 library holdings
Genres: Conference papers and proceedings 
Roles: Editor, Instrumentalist, Author, Composer, Collector, Performer
Classifications: QE33.2.S82, 550.72
Publication Timeline
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Most widely held works by Xavier Sánchez-Vila
GeoENV IV : geostatics for environmental applications : proceedings of the Fourth European Conference on Geostatistics for Environmental Applications held in Barcelona, Spain, November 27-29, 2002 by Xavier Sánchez-Vila( )

27 editions published between 2004 and 2006 in English and held by 801 WorldCat member libraries worldwide

This volume contains forty-one selected full-text contributions from the Fourth European Conference on Geostatistics for Environmental Applications, geoENV IV, held in Barcelona, Spain, November 2002. The objective of the editors was to compile a set of papers from which the reader could perceive how geostatistics is applied within the environmental sciences. A few selected theoretical contributions are also included. The papers are organized in the following sections: Air pollution and satellite images, Ecology and environment, Hydrogeology, Climatology and rainfall, Oceanography, Soil science, Methodology. Applications of geostatistics vary from particle matter analysis, land cover classification, space-time ozone mapping, downscaling of precipitation, contaminant transport in the subsurface, aquifer reclamation, analysis of Iberian hare or phytoplankton abundance, coastal current patterns, to soil pollution by heavy metals or dioxins. At the back of the book nineteen posters presented at the congress are included. The combination of full texts and posters provides a picture of the tendencies that can presently be found in Europe regarding the applications of geostatistics for environmentally related problems. Audience: After four editions the geoENV Congress Series has established itself as a 'must' to all scientists working in the field of geostatistics for environmental applications. Each geoENV congress covers the developments which have occurred during the preceding two years, but always with a highly applied focus. It is precisely this focus on the applications to environmental sciences which makes the geoENV volumes unique and of great interest and practical value to geostatisticians working both in academia and in industry
All the way by Adrien Moignard( )

3 editions published in 2010 in No Linguistic content and Undetermined and held by 65 WorldCat member libraries worldwide

Las aguas subterráneas en el Plan Hidrológico Nacional( Book )

3 editions published in 2001 in Spanish and held by 15 WorldCat member libraries worldwide

Flujo radial en medios heterogéneos by Xavier Sánchez-Vila( Book )

3 editions published in 2005 in Spanish and held by 14 WorldCat member libraries worldwide

Groundwater intensive use : IAH Selected Papers on Hydrogeology 7( )

1 edition published in 2005 in English and held by 11 WorldCat member libraries worldwide

Intensive use of groundwater has resolved the demand for drinking water and, through irrigation, has contributed to the eradication of malnourishment in many developing countries. The spectacular worldwide increase in groundwater use in the last decades, especially in arid and semi-arid regions, has been a silent revolution carried out by millions of small farmers. In some instances, groundwater abstraction has caused problems of quality degradation, excessive drawdown of groundwater levels, land subsidence, reduction of spring and baseflows or degradation of groundwater-dependent ecosystems. Most of these problems could be anticipated, mitigated, or even avoided with more active water agencies, adequate regulations and users' participation in management. Groundwater Intensive Use contains a selection of papers presented at a symposium held in December 2002 in Valencia, Spain. It constitutes a step forward in creating a greater worldwide awareness of the relevance of groundwater in
GeoENV IV : geostatics for environmental applications by Geostatistics for Environmental Applications Workshop( )

2 editions published in 2004 in English and held by 9 WorldCat member libraries worldwide

Hidrología subterránea( Book )

6 editions published between 1998 and 2004 in Spanish and held by 6 WorldCat member libraries worldwide

Hidrología subterránea( Book )

6 editions published between 2002 and 2004 in Spanish and held by 5 WorldCat member libraries worldwide

GeoENV IV - geostatistics for environmental applications by Geostatistics for Environmental Applications Workshop( Book )

2 editions published in 2004 in English and held by 5 WorldCat member libraries worldwide

A risk assessment methodology to evaluate the risk failure of managed aquifer recharge in the Mediterranean Basin by Paula Rodríguez-Escales( )

2 editions published in 2018 in English and held by 4 WorldCat member libraries worldwide

Microbial community changes induced by Managed Aquifer Recharge activities: Linking hydrogeological and biological processes by Carme Barba( )

2 editions published between 2018 and 2019 in English and held by 4 WorldCat member libraries worldwide

Anàlisis d'alternatives de recàrrega artificial i viabilitat econòmica d'aplicació a la cubeta de Sant Andreu de la Barca by Jordi Pomés Pitart( )

2 editions published in 2006 in Catalan and held by 3 WorldCat member libraries worldwide

Recursos d'aigua : desembre 1999( Book )

1 edition published in 1999 in Catalan and held by 3 WorldCat member libraries worldwide

Estudi hidrogeològic del terme municipal de Sant Adrià del Besòs by Jenny Nilsson Vidal de Llobatera( )

1 edition published in 2002 in Catalan and held by 2 WorldCat member libraries worldwide

Caracterització física i química de dos embassaments que reben drenatges àcids de mina de la conca de l'Odiel (Huelva) by Ester Torres-Simón( )

2 editions published in 2010 in Catalan and held by 2 WorldCat member libraries worldwide

El Drenatge Àcid de Mina (AMD) és el problema principal de la qualitat de l'aigua superficial i subterrània en regions mineres. L'objectiu principal del projecte és adquirir el coneixement necessari per tal de poder predir l'impacte que tindrà un embassament projectat al riu Odiel (SO Espanya), en una conca fortament contaminada per AMD. Per tal de predir la qualitat de l'aigua d'aquest futur embassament estem estudiant el comportament hidrològic i químic de dos embassaments de la mateixa conca que reben AMD. L'embassament Olivargas està lleugerament afectat per AMD però el seu pH és pràcticament neutre, mentre que el Sancho que està fortament afectat per AMD té un pH àcid. Els primers resultats mostren que els dos embassaments tenen un comportament holomíctic, és a dir, durant la major part de l'any estan tèrmicament estratificats (termoclina) i la part mes profunda de l'embassament està sota condicions anòxiques. Durant els mesos d'hivern tota l'aigua s'homogeneïtza (turnover), i tota la columna d'aigua està sota condicions oxidants. Això afecta la solubilitat d'alguns contaminants (As, Fe i Mn) que precipiten durant les condicions oxidants degudes a la homogeneïtzació de l'aigua i poden ser alliberats durant les condicions reductores. Els fluxos d'aigua i les propietats físiques (temperatura, salinitat i densitat) i químiques (pH, Eh i la concentració de soluts) dels dos embassament han estat mesurades en dues campanyes d'estiu i dues d'hivern. A més, l'embassament de El Sancho ha estat modelat amb un model físic 1 dimensional, DYRESM (Dynamic Reservoir Simulation Model), per tal de predir la temperatura, la Densitat i la salinitat al llarg de la columna d'aigua. El model prediu correctament el balanç d'aigua, la formació de la termoclina i el turnover. La salinitat està lleugerament sobreestimada, probablement degut a la sobreestimació de les mesures de camp. La temperatura està també sobreestimada degut, probablement, a la incertesa sobre les dades de la velocitat del vent. En conseqüència, s'haurà de treballar per tal de poder refinar els valors de camp de la salinitat i de la velocitat del vent. Per tal de completar el balanç de massa es duran a terme anàlisis detallades dels sediments (sòlid i aigua intersticial). Finalment, es pretén acoblar un model geoquímic al model físic DYRESM
Modelling of variable density flow in karstic coastal aquifers by María del Pilar López Llompart( )

2 editions published in 2008 in English and held by 2 WorldCat member libraries worldwide

This master thesis aims at studying the effect that the presence of the caves has on saline intrusion in the aquifer. Thus, the final objective is to elaborate a numerical modeling of the groundwater flow and salt transport in the karstic aquifer. Despite the fact that many researchers have invested their efforts in studying the behavior of continental karsts, the modeling examples of coastal karstic aquifers are very rare. Due to the complexity of the problem, it is necessary to apply drastic simplifications. In this case, the karstic system has been characterized as a porous matrix crossed by one conduit. In the matrix it is considered that the water flow is driven by the variable density. The flow in the conduit does not take into account the mass transport processes and, thus, it is supposed to be governed by the Saint Venant equation. This approach has not been applied to coastal aquifers previously. The main advantage of this methodology is that it considers the exchange between the conduit and the surrounding matrix. In order to reach the objective, different models have been implemented in COMSOL Multiphysics, a Finite Element Method code. Initially, the groundwater flow in the karstic system has been modeled without considering the variable density of the water. Next, the variable density problem in two dimensions with and without the conduit is introduced. Finally, the whole problem is extended to three dimensions
Subsurface as a bioreactor : interaction between physical heterogeneity and microbial processes by Núria Perujo Buxeda( )

2 editions published between 2018 and 2019 in English and held by 2 WorldCat member libraries worldwide

Infiltration systems are water treatment technologies where water vertically percolates through porous media while several biogeochemical processes occur. Biofilms are the main responsible for those biogeochemical processes due to their ability to colonize sediments as well as due to their role in transformation of organic matter and nutrients in aquatic ecosystems and subsurface environments. However, an excessive biofilm growth in sand filtration systems can significantly reduce their infiltration capacity (bio-clogging), thus constraining the processes that occur therein. Sediment grain size distribution influences the performance of these systems since it determines hydrological characteristics in subsurface sediments influencing biofilm growth as well as the process rates of biogeochemical processes in depth. Furthermore, sediment grain size can also influence the occurrence and depth-extension of bio-clogging. The main objective of this doctoral thesis is to study the influence of grain size distributions on biogeochemical processes and on bio-clogging in depth in sand infiltration systems used as potential tertiary treatments for the removal of organic matter and nutrients in water. To achieve this objective, two infiltration experiments have been carried out: (a) a laboratory-scale columns experiment using 5 sediment grain size distributions used as potential infiltration systems (Chapter I) and (b) an outdoor infiltration experiment in sediment tanks using two sediment grain size distributions (Chapter II and Chapter III). The results of this thesis show how sediment grain size distribution influences biofilm establishment and growth, biogeochemical rates as well as occurrence of bio-clogging in surface sediments and in depth. Accordingly, coarse sediments (coarse system) allow higher biomass in depth but they do not have the ability to remove dissolved phosphorous; however, due to high input loads they showed higher process rates. Grain size distribution of coarse sediment in the upper layer and fine sediment in the bottom layer (coarse-fine system) promotes the accumulation of biomass at the interface of the two sediment layers which results in a hot-spot of microbial activity. In addition, it promotes nutrient accumulation in sediments (dissolved phosphorous removal) possibly due to the fact that its flow velocities are smaller than those of a coarse system and therefore the contact time between the water and sediment increases by promoting the assimilation and adsorption of nutrients in the porous medium. Biomass establishment in fine sediments (fine system) results in greater bio-clogging due to lower initial porosity compared to systems with coarse sediment on the surface. This lower porosity results in less space available to colonize, and due to this, biofilm in the top layer of the monolayer fine system could reach the maturity state earlier than the bilayer coarse-fine system. That, together with the lower flows in the fine system, favours the detachment of biofilm in the top layer and its transport in depth. EPS accumulation in depth (due to live bacteria release or due to transport from upper sediment layers) is the main factor causing K variations in depth (potential to cause deep-clogging). Results also showed that mixed sediments of fine and coarse sands (mixture system) and the fine-coarse system achieve similar performance than fine system reaching similar biomasses between them and lower process rates than the other grain size distributions studied
 
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Audience level: 0.25 (from 0.14 for GeoENV IV ... to 0.99 for Modelling ...)

WorldCat IdentitiesRelated Identities
GeoENV IV : geostatics for environmental applications : proceedings of the Fourth European Conference on Geostatistics for Environmental Applications held in Barcelona, Spain, November 27-29, 2002 geoENV IV -- Geostatistics for Environmental Applications : Proceedings of the Fourth European Conference on Geostatistics for Environmental Applications held in Barcelona, Spain, November 27-29, 2002
Covers
geoENV IV -- Geostatistics for Environmental Applications : Proceedings of the Fourth European Conference on Geostatistics for Environmental Applications held in Barcelona, Spain, November 27-29, 2002GeoENV IV : geostatics for environmental applicationsGeoENV IV - geostatistics for environmental applicationsGeostatics for environmental applications : geoENV IV ; proceedings of the Fourth European Conference on Geostatistics for Environmental Applications held in Barcelona, Spain, November 27-29, 2002
Alternative Names
Sánchez Vila, Francisco Javier

Sánchez Vila, X.

Sánchez Vila, X. (Xavier)

Sánchez Vila, Xavier

Sánchez, X.

Sánchez, X. (Xavier)

Sánchez, Xavier

Sánchez, Xavier (Sánchez Vila)

Vila Xavier Sanchez-

Xavier Sanchez-Vila onderzoeker

Xavier Sanchez-Vila researcher

Languages
English (44)

Spanish (21)

Catalan (6)