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Technische Universitat Darmstadt (2019)

Groundwater modelling of a coastal semi-arid hydrogeological system

Pouliaris, Christos

Titre : Groundwater modelling of a coastal semi-arid hydrogeological system

Auteur : Pouliaris, Christos

Université de soutenance : Technische Universitat Darmstadt

Grade : Doktor-Ingenieur (Dr.-Ing.) 2019

Résumé
The present study involved the development of a groundwater flow model for the evaluation of different MAR scenarios at the coastal plain of Lavrio, Greece. In the initial steps of the study, an identification of the principal elements of the hydrological cycle and their interrelation was performed, using extended literature review and a series of activities in the field. The main hydrological processes taking place were identified and data that would later be used at the groundwater flow model building were collected. Following that, a groundwater flow model was built for the coastal hydrosystem of Lavrio. The data collected in the previous step was used as an input. The primary goal of the model was to have a qualitative, at least, estimation of the dynamics between the two aquifer systems that are present in the area and the adjacent sea. The sensitivity analysis of the model was thoroughly done and drove to a robust parameter estimation process. In the final step, a model that focused on the karstic aquifer was built. Elements that characterize the karstic system of Lavrio were additionally collected and implemented in the previous model. A sensitivity analysis of the different parts of the different components of the aquifer was performed in order to identify the parts of the model that play a significant role in the model performance. The aim of the model was to pinpoint these essentials and propose a new methodology for obtaining such data.

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