Έρευνα υφάλμυρων υδροφορέων με την μέθοδο της γεωηλεκτρικής τομογραφίας = Saline aquifer prospection using the resistivity tomography method.
Περίληψη
Στην περιοχή μελέτης δεν ανιχνεύθηκαν υφάλμυροι υδροφορείς. Οι τιμές τις αντίστασης έδειξαν την ύπαρξη μόνο γλυκών υδροφορέων.
Λέξεις-κλειδιά: ηλεκτρική μέθοδος, ειδική ηλεκτρική αντίσταση, επαγόμενη πόλωση, δισδιάστατη διασκόπηση, διατάξεις διπόλου-διπόλου και multi-gradient, διαγραφίες, υφαλμύριση
The thesis aims to contribute whether or not salinated aquifers exist in a specific area of Gefyra, which is west of Thessaloniki. Electrical geophysical methods are presented and especially those of electrical resistivity and induced polarization. Basic electrode configurations that are used during the field survey are presented, along with the calculations of the apparent resistivity. In addition, the measuring methods (vertical electrical sounding, lateral profiling, 2D profiling), that are used to determine the measurements taken at the field, depending each time from the purpose of the research, are presented. The area of interest and its geological formations are shown in geological maps included in this thesis. Furthermore, the loggings applied in a drilling of EATH nearby are presented. Finally, the information from the tomography taken in the area of interest is cited and analyzed.
In the study area, no saline aquifers are detected. Resistivity values of the geological units show the presence of aquifers with only fresh water present.
Πλήρες Κείμενο:
PDFΑναφορές
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Παπαζάχος, Β.Κ., (1996). ‘Εισαγωγή στην εφαρμοσμένη Γεωφυσική ‘. Εκδόσεις Ζήτη, Θεσσαλονίκη.
Τσελέντης, Α., Παρασκευόπουλος, Π., (2013). ‘Εφαρμοσμένη γεωφυσική’. Εκδόσεις Liberal books, Αθήνα.
Ξενόγλωσση Βιβλιογραφία
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Διαδικτυακές πηγές:
Εικόνα 1: https://openstax.org/books/college-physics-ap-courses/pages/20-3-resistance-and-resistivity
Εικόνα 3: https://em.geosci.xyz/content/physical_properties/electrical_conductivity/index.html#electrical-conductivity-index
Εικόνα 5: https://em.geosci.xyz/content/geophysical_surveys/dcr/survey.html
Εικόνα 7: http://www.geofizika.bg/Vertical_electrical_sounding
Εικόνα 9: https://www.ngwa.org/what-is-groundwater/About-groundwater/confined-or-artesian-groundwater
Εικόνα 15: https://informedwell.com/e-logging
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