Violeta Velasco's research while affiliated with Institute of Environmental Assessment and Water Research and other places
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Publications (32)
Low enthalpy ground‐source heat pump systems can provide a low‐cost, low‐carbon, sustainable method for heating and cooling buildings; these systems can be classified as either “open loop” or “closed loop” systems. This chapter presents three case studies concerning the application of 3‐D subsurface information to assess and develop shallow and dee...
Each scientist is specialized in his or her field of research and in the tools that he or she uses during the research in a specified site. Thus, he or she is the most suitable person for improving the tools by overcoming their limitations to realize faster and higher quality analysis. However, most scientists are not software developers. Hence, it...
AkvaGIS is a novel, free and open source module included in the FREEWAT plugin for QGIS that supplies astandardized and easy-to-use workflow for the storage, management, visualization and analysis of hydro-chemical and hydrogeological data. The main application is devised to simplify the characterization ofgroundwater bodies for the purpose of buil...
The impacts induced by the interaction between underground constructions and groundwater should be minimised by implementing corrective measures. These impacts are twofold, which means that underground constructions affect groundwater, and vice versa. Two common situations resulting from this interaction are the barrier effect (impact of an undergr...
GIS technology gives a wide-ranging support to environmental modeling, especially to groundwater modeling. Numerous GIS applications have been developed to define the hydrogeological conceptual model as well as the numerical model. However, there is a scarcity of tools to implement the conceptual model in numerical modeling platforms. This transiti...
http://meetingorganizer.copernicus.org/EGU2017/EGU2017-19221-1.pdf
http://meetingorganizer.copernicus.org/EGU2017/EGU2017-19584.pdf
This paper aims at presenting the open source and public domain FREEWAT platform capabilities for water resource management, including: (i) pre-processing modules to facilitate the preparation of input data, (ii) modelling tools for the analysis of several processes aimed at supporting water resource management, and (iii) post-processing tools to p...
The overdevelopment of cities since the industrial revolution has shown the need to incorporate a sound geological knowledge in the management of required subsurface infrastructures and in the assessment of increasingly needed groundwater resources. Additionally, the scarcity of outcrops and the technical difficulty to conduct underground explorati...
Due to the growth in demand for shallow geothermal energy, the development of an integrated management system to organize the exploitation of this resource is mandatory to protect both groundwater and the users’ rights. This paper proposes a methodology to establish a market of shallow geothermal energy use rights which will represent an advance in...
The overdevelopment of cities since the industrial revolution has shown the need to incorporate a sound geological knowledge in the management of required subsurface infrastructures and in the assessment of increasingly needed groundwater resources. Also, the scarcity of outcrops and the technical difficulty to conduct underground exploration in ur...
Construction processes require monitoring to ensure safety and to control the new and existing structures. Traditional monitoring is based on land surveys and geotechnical instruments and only allows for point-like measurements. Ground-based Synthetic Aperture Radar (GB-SAR) is a remote sensing radar installed in the ground that offers the possibil...
The quantification of the hydraulic parameters is important to support decision making in environmental impact assessment, water resources evaluation or groundwater
contamination remediation, among others. These kind of parameters derived from aquifer tests usually encompasses a vast amount of data (spatial and non-spatial) for management and analy...
Borehole Heat Exchangers (BHEs) are increasingly being used to exploit shallow geothermal energy. This paper presents a new methodology to provide a response to the need for a regional quantification of the geothermal potential that can be extracted by BHEs and the associated environmental impacts. A set of analytical solutions facilitates accurate...
http://meetingorganizer.copernicus.org/EGU2016/EGU2016-964.pdf
A GIS-based software platform was developed to arrange all the available hydrogeochemical data into a comprehensive structure and provide support for its proper storage, management, analysis and interpretation. This platform is composed of a geospatial database and a set of analytical instruments integrated in a graphical user interface that coordi...
http://meetingorganizer.copernicus.org/EGU2016/EGU2016-6445.pdf
Construction of tunnels can impact aquifers because of the changes produced in the natural groundwater behavior. The drain effect, which is one of the most important impacts, can be eliminated using a tunnel-boring machine (TBM) to drill a tunnel with an impervious lining. However, the use of impermeable linings results in aquifer obstruction, givi...
A software platform (QUIMET) was developed to improve the sorting, analysis, calculations, visualizations, and interpretations of hydrogeochemical data in a GIS environment. QUIMET is composed of a geospatial database plus a set of tools specially designed for graphical and statistical analysis of hydrogeochemical data. The geospatial database has...
The Quaternary Besòs delta is located on the Mediterranean coast in NE Spain. The Besòs Delta Complex includes 3 aquifers constituted by 3 sandy and gravelly bodies, separated by lutitic units. These aquifers supply water for domestic and industrial use in this area. Management of groundwater has been problematic in the Besòs delta since the 1960s,...
Tunnel construction in urban areas has recently become a topic of interest and has increased the use of tunnel boring machines. Monitoring subsurface effects due to tunnel building in urban areas with conventional surface geophysical techniques is not an easy task because of space constraints. Taking advantage of the construction of a new metro lin...
A software platform was developed to facilitate the development of 3D geological models of sedimentary media for hydrogeological modelling, especially for urban environments. It is composed by a geospatial database and a set of tools that enable the user to perform an accurate stratigraphic analysis. The geospatial database is used for the manageme...
In Europe numerous urban areas are located in the flood plains of the rivers. Sedimentary media (alluvial sediments, deltas,
etc.) form particular frequently occurring environments within these valley fills. However, sedimentary media are normally
significant aquifers due to their high permeability, storage capacity, interaction with surface water,...
This paper describes how wells drilled during the geotechnical investigation of an urban tunnel into Holocene delta sediments can be employed to complete the geological information and to monitoring drilling processes with low cost experimental electrodes and cables for single-hole (SHERT) and cross-hole (CHERT) electric resistance tomography measu...
Due to the natural heterogeneity the hydrological modeling in the deltaic sedimentary media is complex. Reliable 3D hydrogeological models could be created by integrating properly detailed and accurate data. This data has to be properly managed and interpreted. The first task has been the creation of a geospatial database to store and to allow the...
Citations
... The Potential Evapotranspiration (ETP) and recharge were estimated using EASY_BAL (Serrano-Juan et al., 2020). This software estimates the aquifer recharge from precipitation and irrigation. ...
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... GIS tools are used to visualize groundwater and surface water, hydrological and chemical data [18]. Many scientists have built their applications based on existing GIS software such as, among others, QGIS [10] and ArcGIS [2]. Often these applications are integrated with computational models in the back-end, e.g., numerical simulations [12], statistical methods [16], and machine learning models. ...
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... 2. To perform a watertightness assessment test (WTAT) [20,41,42] before starting the excavation and after drilling the retaining walls. The pumping well and piezometers must be located inside the underground enclosure, and at least, one observation point is needed. ...
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... GIS tools are used to visualize groundwater and surface water, hydrological and chemical data [18]. Many scientists have built their applications based on existing GIS software such as, among others, QGIS [10] and ArcGIS [2]. Often these applications are integrated with computational models in the back-end, e.g., numerical simulations [12], statistical methods [16], and machine learning models. ...
... This was carried out by applying the following finite difference codes: MODFLOW-2005 [41] for the simulation of groundwater flow and SEAWAT [42] for the simulation of density-dependent flow. Both codes were applied through the QGIS-integrated FREEWAT interface [43][44][45], which allows taking advantage of GIS spatial analysis tools for model implementation and benefiting from several numerical codes (such as MODFLOW, SEAWAT, and other MODFLOW-related codes) for the simulation of a number of hydrological processes. ...
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... More than 80 % of the Earth's surface -above and below sea level -is of volcanic origin, which makes volcanic dykes a very frequent structure in coastal aquifers (Comte et al., 2017;Vázquez-Suñé et al., 2016) and island aquifers (Becerril et al., 2013;Ecker, 1976;Izuka et al., 2018). Dykes are sub-vertical sheeted intrusions, which generally intrude into extensional faults and fractures during the later stages of the volcanic cycle. ...
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... In this case, BCs were implemented at two different depths given the geometry of the Besòs delta river formation. This can be divided in three main units (Velasco et al., 2012;Vázquez-Suñé et al., 2016): the deep aquifer, the intermediate aquitard and the shallow aquifer. Prescribed head BCs were implemented in the two aquifers. ...
... Sustainability, considering the carbon neutral energy production, is the primary goal of the global energy market. Moreover, responsible consumption of natural resources and renewable energy are the dire need of this era, according to the United Nation's Sustainable development goals [1]. Pakistan is rich in renewable energy resources, and still, it is facing energy crises like the shortage of electricity and load shedding [2,3]. ...
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... Zhang et al. developed a laboratory seepage test device to study the influence of recharge well spacing on drawdown [22]. Moreover, pumping and injecting will change the water pressure and deform the retaining structure [23]. Zhang et al. compared the pore water pressure and horizontal displacement of soil with the condition of only discharge and recharge following discharge [8]. ...
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... This GIS-based platform facilitate and improve the reporting of results of groundwater quality and quantity. For further analyses, this platform is connected with external software to implement further water mix analysis (MIX, Carrera et al., 2021), hydrochemical balance (Easy_Quim, Serrano-Juan et al., 2020), and for the interpretation of hydraulic parameters (MJ-Pumpit, Criollo et al., 2016) (see Fig. 1). ...
