Εξώφυλλο

Ενδείξεις για πρόκληση σεισμικότητας λόγω μεταβολών των τάσεων Coulomb με ανάλυση του πεδίου των τάσεων = Evidencing the Coulomb stress triggering by detailing the stress pattern.

Βασίλειος Κωνσταντίνος Αναγνώστου

Περίληψη


Η παρούσα πτυχιακή εργασία έχει ως θέμα τη διερεύνηση της ευαισθησίας στην πρόκληση σεισμικότητας λόγω της σεισμικής ολίσθησης ισχυρών σεισμών από τις ιδιότητες του πεδίου των τάσεων σε στοχευμένες περιοχές του κεντρικού Ιονίου. Στο πρώτο κεφάλαιο περιγράφεται το σεισμοτεκτονικό καθεστώς της περιοχής μελέτης και δίνονται στοιχεία για την ιστορική και ενόργανη σεισμικότητα της περιοχής. Στο δεύτερο κεφάλαιο περιγράφεται η μεθοδολογία που ακολουθήθηκε για την αντιστροφή του πεδίου των τάσεων και για τον υπολογισμό των μεταβολών τάσεων Coulomb. Στο τρίτο κεφάλαιο παρουσιάζονται τα αποτελέσματα των αντιστροφών καθώς και τα αποτελέσματα από τους υπολογισμούς των μεταβολών τάσεων Coulomb με ταυτόχρονη διερεύνηση για την πρόκληση σεισμικότητας σε κάθε μια από τις υποπεριοχές της περιοχής μελέτης. Τέλος, στο τέταρτο κεφάλαιο, καταγράφονται τα συμπεράσματα της παρούσας εργασίας για τις αντιστροφές του πεδίου των τάσεων της περιοχής καθώς και οι ενδείξεις για πρόκληση σεισμικότητας εξαιτίας των μεταβολών των τάσεων Coulomb.

The aim of the present thesis was the investigation of the stress triggering sensitivity due to the seismic slip of strong earthquakes by detailing the stress pattern in targeted areas of the central Ionian. In the first chapter, the seismotectonic regime of the study area is described and information is given on the historical and instrumental seismicity of the area. The second chapter describes the basic principles of the methodology used for the stress inversions and the Coulomb stress change calculations. In the third chapter, the results of the inversions are presented as well as the results from the calculations of the Coulomb stress changes with a simultaneous investigation for the stress triggering in each of the sub-regions of the study area. In the final chapter, the conclusions of this thesis are recorded on the stress inversions in the area as well as the evidence of stress triggering due to Coulomb stress transfer.

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Αναφορές


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