The objective of this study is to share information with the public about the impact of the Grand Ethiopian Renaissance Dam (GERD) on Egypt, which is the downstream country of the Nile River and which depends on its water as for 95%. The study is divided into three parts, the first one is a literature review about the impact of the construction and reservoir filling of the GERD on Egypt. The second part is the presentation of the remote sensing analysis which was performed to monitor the current situation in the Delta region and which can be used to assess the changes during the filling and operation period of the dam. Landsat 7 ETM+ satellite images were processed to determine the Normalized Difference Vegetation Index, the Normalized Difference Water Index and the Normalized difference Moisture Index. These indices provide information about the vegetation health, moisture and water presence. Then, a prototype design and implementation was performed on the WebGIS GeoNode platform to share the impact of the GERD on Egypt territory with the public. The Entity Relatioship Diagram of the WebGIS has been designed, with the layers necessary to the user to be able to monitor the situation. The layers which are included in the prototype consist of 2 vector layers, 24 raster layers, 3 documents and 24 figures, illustrating the situation from 2011 to 2018, the predicted scenarios of the filling period of the GERD Reservoir and the predicted scenarios of the long term effect after the filling period of the GERD reservoir. Styling was performed in Geonode, and queries were foreseen to help the user exploit the system.
L'obiettivo di questo studio è quello di condividere informazioni con il pubblico sull'impatto della grande diga dell'Etiopia (Grand Ethiopian Renaissance Dam, GERD) in Egitto, Paese a valle del fiume Nilo che dipende dalle sue acque per il 95%. Lo studio è diviso in tre parti, la prima è una revisione della letteratura sull'impatto della costruzione e del riempimento del bacino idrico della GERD in Egitto. La seconda parte è la presentazione delle analisi di immagini telerilevate che è stata eseguita per monitorare la situazione attuale nella regione del Delta e che può essere utilizzata per valutare i cambiamenti durante il periodo di riempimento e funzionamento della diga. Immagini satellitari Landsat 7 ETM + sono state elaborate per determinare l'indice di vegetazione (Normalized Difference Vegetation Index, NDVI), di contenuto d’acqua (Normalized Difference Water Index, NDWI) e di umidità (Normalized difference Moisture Index, NDMI). Questi indici forniscono informazioni sulla salute della vegetazione, umidità e presenza di acqua sul territorio. Infine, un prototipo di WebGIS è stato progettato e implementato nella piattaforma GeoNode, per condividere l'impatto della GERD sul territorio egiziano con il pubblico. Il Diagramma Entità Relazioni del WebGIS è stato progettato, con gli strati informativi necessari all'utente per essere in grado di monitorare la situazione. Gli strati informativi inclusi nel prototipo sono costituiti da 2 layer vettoriali, 24 layer raster, 3 documenti e 24 figure, che illustrano la situazione dal 2011 al 2018, gli scenari previsti nel periodo di riempimento del bacino della GERD e gli scenari previsti dell’effetto a lungo termine. E’ stato definito lo stile degli strati informativi in Geonode e sono state previste delle query per aiutare l'utente a sfruttare il sistema.
A WebGIS Prototype to show the impact of the Grand Ethiopian Renaissance Dam on Egypt fresh water availability
MOHAMED, NEVIN MUSTAFA ABUELELA IBRAHIM
2017/2018
Abstract
The objective of this study is to share information with the public about the impact of the Grand Ethiopian Renaissance Dam (GERD) on Egypt, which is the downstream country of the Nile River and which depends on its water as for 95%. The study is divided into three parts, the first one is a literature review about the impact of the construction and reservoir filling of the GERD on Egypt. The second part is the presentation of the remote sensing analysis which was performed to monitor the current situation in the Delta region and which can be used to assess the changes during the filling and operation period of the dam. Landsat 7 ETM+ satellite images were processed to determine the Normalized Difference Vegetation Index, the Normalized Difference Water Index and the Normalized difference Moisture Index. These indices provide information about the vegetation health, moisture and water presence. Then, a prototype design and implementation was performed on the WebGIS GeoNode platform to share the impact of the GERD on Egypt territory with the public. The Entity Relatioship Diagram of the WebGIS has been designed, with the layers necessary to the user to be able to monitor the situation. The layers which are included in the prototype consist of 2 vector layers, 24 raster layers, 3 documents and 24 figures, illustrating the situation from 2011 to 2018, the predicted scenarios of the filling period of the GERD Reservoir and the predicted scenarios of the long term effect after the filling period of the GERD reservoir. Styling was performed in Geonode, and queries were foreseen to help the user exploit the system.| File | Dimensione | Formato | |
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https://hdl.handle.net/10589/145643