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Towards a Spatial Data Infrastructure and an Integrated Management of Groundwater Resources

Journal of Geographic Information System 2015年第6期7卷 667-676页

作者： hassane jarar oulidi Aniss Moumen Hassania School for Public Works Route d’El Jadida Casablanca Morocco Geosciences Laboratory of Natural Resources (GeoNaRes) Faculty of Sciences IbnTofial University Kenitra Morocco

International studies of expertise have shown that the difficulty of data access is one of the major hindrances that brakes any effort to conduct studies on groundwater. This research paper is an attempt to address this problematic through developing a technical framework to implement a Spatial Data Infrastructure (SDI) with a view to improving the status of access to data related to groundwater in Morocco, and achieving their interoperability. This prototype is primarily based on international standards (OGC & ISO) such as Web Map Service (WMS), Web Feature Service (WFS), Catalog Web Service (CSW) and Sensor Observation Service (SOS) accompanied by the use of associated specifications such as Geography Markup Language (GML) and Filter Encoding (FE). This platform is considered both as a tool for sharing updated data collected from numerous and divers source providers, and as a tool of web-based GIS for groundwater management, which constitutes the basis for decision making.

关键词： Spatial Data Infrastructure Groundwater Resources OGC Standards Geoportal Morocco

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Comparing and Evaluating Probabilistic and Deterministic Spatial Interpolation Methods for Groundwater Level of Haouz in Morocco

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Journal of Geographic Information System 2015年第6期7卷 631-642页

作者： Lamiaa Khazaz hassane jarar oulidi Saida El Moutaki Abdessamad Ghafiri Laboratory of Applied Geology Geomatics and Environment Faculty of Sciences Ben M’sik University Hassan II Casablanca Casablanca Morocco Hassania School of Public Works Casablanca Morocco

Growing water scarcity is one of the major challenges of the 21st century, especially in arid and semi-arid climates such as our study area. The efficient, sustainable and integrated groundwater management plays a key role for conserving this vital resource. In order to overcome this issue, the study of aquifer system’s behavior seems necessary. For this purpose, the areal piezometric level map is an essential tool. As piezometric level data are spatially limited in sample points, the?spatial interpolation and geostatistics are the best way to produce the needed map. Several methods exist allowing to approach real values with varying degrees of accuracy. This work aims to compare?and evaluate spatial interpolation methods for groundwater level of Haouz using a dataset of 39 piezometers. The deterministic methods used in this study are Inverse Distance Weighted (IDW) and Radial Basis Functions (RBF) and the probabilistic ones are ordinary kriging (OK), simple kriging (SK) and universal kriging (UK). This study shows the difficulty of having a key role to choose the suitable method for given input dataset. The best model remains the one that, after comparing several methods, offers the best accuracy, which is assessed using Cross-validation and statistical indicators. The results reveals that ordinary kriging with trend removal technique is the optimal method in this case. It indicates the superiority of this technique with a decrease in Root Mean Square Error (RMSE) up to 61.67%. It underestimates groundwater level with an average of 2.8%, which is reliable. The areal piezometric level and associated prediction standard error maps give additional information and recommendations that characterize the studied aquifer system and will ultimately improve sustainable groundwater management.

关键词： Geostatistics Kriging Piezometric Level Groundwater Haouz Morocco

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A Sensor Web for Real-Time Groundwater Data Monitoring in Morocco

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Journal of Geographic Information System 2014年第6期6卷 613-623页

作者： Aniss Moumen hassane jarar oulidi Meryem Agadi Mohamed Nehmadou Mohamed Ben-Daoud Amel Barich Abdelaziz Mridekh Bouabid El Mansouri Said Boutaleb Karim Ben Hachmi Mohammed Ali Essahlaoui Samir Eljaafari Geosciences Laboratory of Natural Resources (GeoNaRes) Faculty of Sciences IbnTofial University Kenitra Morocco Department of Mathematics Informatics and Geomatics Hassania School of Public Works (EHTP) Casablanca Morocco Laboratory of Chemical Engineering and Environment Faculty of Science and Technology Hassan II University Mohammedia Morocco Applied Geology and Geo-Environment Laboratory Faculty of Sciences Ibn Zuhr University Agadir Morocco Department of Biology Faculty of Science Moulay Ismail University Meknes Morocco Instituto Andaluz de Ciencias de la Tierra UGR-CSIC Granada Spain Water Sciences and Environmental Engineering Group Department of Geology Faculty of Science Moulay Ismail University Meknes Morocco

This article presents research and development of an interoperable platform to facilitate, monitor and coordinate groundwater data sharing. This system was orchestrated by a number of services described by Open Geospatial Consortium (OGC) such as Sensor Observation Service (SOS) and other services for the use of mapping data, Web Feature Services (WFS), Web Map Service (WMS), and catalogue services (CSW). An important activity for our project was the establishment of a portal for geographic data and services. Geoportal developed for this project will promote and facilitate access to groundwater data and share theme more openly. Otherwise our system has been designed to provide a powerful tool that enhances the ability of regional staff to monitor near real-time groundwater data (i.e.?piezometric level) and as a result will help provide a more effective response to environmental upsets.

关键词： Sensor Web OGC Geoportal Geocatalog Monitoring Groundwater Morocco

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HydrIS: An Open Source GIS Decision Support System for Groundwater Management (Morocco)

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Geo-Spatial Information Science 2009年第3期12卷 212-216页

作者： jarar oulidi hassane LWNER Ralf BENAABIDATE Lahcen WCHTER Joachim Geraman Research Centre for Geosciences

A regional groundwater management system has been elaborated, integrating Relational Database Management System （RDBMS） and various web services. It consists of web geospatial application so-called HydrlS （ Hydrogeological Information System） based on Open Source components and technologies, leading to a feasible and low-cost solution. Therefore, HydrlS permits delivery of data from a number of heterogeneous sources to standards supported by the Open Geospatial Consortium （OGC）. The protocols used for exchanging data are also derived from OGC standards, i.e., WMS （Web Mapping Service）, WFS （Web Feature Service）, and WCS （Web Coverage Service）. Finally, a geoportal was developed, which consists of client-applications that communicate with different Web Services （WMS, WCS, and WFS） through HTTP-requests. A prototype for web-based GIS application was designed using the deegree Framework to provide systematic interfaces and functions. This system was developed to demonstrate the value of making hydrogeological data more widely accessible through client/server architecture. This experience and knowledge already gained in this project will be a source for technology transfer and policy decisions. Otherwise, this will enable user groups to improve the management of their groundwater resources and contribute to enhanced decision support capabilities.

关键词： Open Geospatial Consortium (OGC) deegree framework database management hydrogeology

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