Dissertation/ Thesis
Ανάπτυξη μεθοδολογιών εκτίμησης της επικινδυνότητας κατολισθήσεων από ισχυρούς σεισμούς: εφαρμογή στο νησί της Λευκάδας ; Development of methodologies for the assessment of landslide hazard from strong earthquakes: application to the island of Lefkada
| العنوان: | Ανάπτυξη μεθοδολογιών εκτίμησης της επικινδυνότητας κατολισθήσεων από ισχυρούς σεισμούς: εφαρμογή στο νησί της Λευκάδας ; Development of methodologies for the assessment of landslide hazard from strong earthquakes: application to the island of Lefkada |
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| المؤلفون: | Servou, Aikaterini, Σέρβου, Αικατερίνη |
| بيانات النشر: | University of Patras Πανεπιστήμιο Πατρών |
| سنة النشر: | 2024 |
| المجموعة: | National Archive of PhD Theses (National Documentation Centre Greece) |
| مصطلحات موضوعية: | Κατολισθήσεις, Καταπτώσεις βράχων, Βάση δεδομένων κατολισθήσεων/καταπτώσεων βράχων, Έπιδεκτικότητα καταπτώσεων βράχων, Επικινδυνότητα καταπτώσεων βράχων, Προσομοιώσεις καταπτώσεων βράχων, Ένταση καταπτώσεων βράχων, Κινητική ενέργεια βραχοτεμάχους, Τεχνικογεωλογική διερεύνηση, Σεισμοί, Λευκάδα, Landslides, Rockfalls, Landslide/rockfall database, Rockfall susceptibility, Rockfall hazard, Rockfall simulations, Rockfall intensity, Rock block kinetic energy, Engineering geological survey, Earthquakes, Lefkada, Γεωεπιστήμες και Επιστήμες Περιβάλλοντος, Φυσικές Επιστήμες, Γεωλογία, Γεωεπιστήμες, γενικά, Earth and Related Environmental Sciences, Natural Sciences, Geology |
| الوصف: | This doctoral thesis aims to develop rockfall susceptibility and hazard assessment methodologies with the earthquake's main triggering factor and application on Lefkada island. Emphasis is given to the western coastal slopes of the island, where the limestone rock masses (Pantokratoras, Vigla and Paxoi units) due to active tectonism present a wide range of engineering geological behaviour. In the framework of the present thesis, an engineering geological classification of all the island's geological units was employed, while the research was focused on the three specific areas-units, which cover the total of the western coastal slopes. A digital Geodatabase was designed and constructed, including 137 cases – rockfall events, which were in detail recorded in situ just after the 2015 earthquake event in the western coastal slopes, which subsequently were completed with cases – events from past earthquakes using several sources of information. The susceptibility assessment was employed through the rockfall intensity (kinetic energy) changes of a specific rock block for each area-unit through theoretical approaches-simulations and the use of Rocfall software (Rocscience Inc.), which constitutes one of the most widely used rockfall simulation computer programs, in 66 selected consecutive cross-sections. The simulation input data is obtained from the element's digital Geodatabase processing and back-analyses of the recorded actual events, applying a particular computational model (ana-rock). Two earthquake scenarios were adopted for the intensity assessment by importing the Peak Ground Velocity (PGV) as initial velocity in the simulations and specifically (a) in normal conditions (aseismic with zero initial velocity) and (b) by selecting the two most recent strong earthquakes (2003 and 2015) which were occurred in the island (with the respective peak ground velocities as initial). The results showed no significant intensity differences (<15%). In addition, a normalized intensity was proposed and estimated, ... |
| نوع الوثيقة: | doctoral or postdoctoral thesis |
| اللغة: | Greek, Modern (1453-) |
| Relation: | http://hdl.handle.net/10442/hedi/55796 |
| DOI: | 10.12681/eadd/55796 |
| الاتاحة: | http://hdl.handle.net/10442/hedi/55796 https://doi.org/10.12681/eadd/55796 |
| رقم الانضمام: | edsbas.BA06CDFD |
| قاعدة البيانات: | BASE |
| DOI: | 10.12681/eadd/55796 |
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