Institutional Repository
Technical University of Crete
Technical University of Crete
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| URI: | http://purl.tuc.gr/dl/dias/C5E7DEE2-96B6-4FC0-A618-00AC126FBB4C | ||
| Year | 2025 | ||
| Type of Item | Master Thesis | ||
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| Bibliographic Citation | Paraskevas Diakoparaskevas, "Groundwater flow model of the Malia aquifer, Heraklion Crete using FEFLOW – Investigate climate scenarios of different climate models", Master Thesis, School of Chemical and Environmental Engineering, Technical University of Crete, Chania, Greece, 2025 https://doi.org/10.26233/heallink.tuc.102672 | ||
| Appears in Collections |
This thesis examines the use of the three-dimensional finite element groundwater model FEFLOW. The groundwater simulation refers to the Malia aquifer, which is located in the northern part of the island of Crete, east of the city of Heraklion. This region has a high water demand due to agricultural activities and tourism development in recent years. A prerequisite for any groundwater simulation is the preparation of all the necessary data and its correct processing into a compatible file format that can be imported into the FEFLOW groundwater model. The input data is prepared using other programs and tools such as ArcGIS, Hydrognomon, Matlab and Microsoft Excel. The Arc GIS program was mainly used for processing the maps to be imported into FEFLOW and, if necessary, for data tables. The other programs and tools were used to process time series and constant data values containing the information used as FEFLOW input. The aquifer water levels for the years 2000 to 2012 from 11 observation wells were available as input for FEFLOW. In addition, the precipitation values for the corresponding years and the pumping wells present in the area were imported. Other necessary input parameters are the hydraulic conductivity values of various geological formations and the elevations of the study area. The last model parameters to be imported were the 2nd type boundary conditions, which were set at the eastern, western and southern boundaries of the aquifer, and those of the 1st type, which were set at the coastline of the area, so that the calibration and validation of the model was completed. After the calibration and validation of the model, the data from 17 different climate models (Oria et al., 2017) were used for each of the climate scenarios RCP 4.5 and RCP 8.5. The climate scenarios were used for the period 2006 – 2098. The results show that there is a decrease in the hydraulic head for the study area in each climate model. The model and the climate scenarios used were created as part of a European program.
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