1. Αποθετήριο Παραδοτέων Υποτρόφων Δράσεων ΕΣΠΑ Τριτοβάθμιας Εκπαίδευσης 2017-2023
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3. Ερευνητικές ομάδες

Τύπος:	Πρακτικά συνεδρίου
Τίτλος:	Monitoring earthquake network measures in aftershock sequences in Greece
Συγγραφέας:	[EL] Χορόζογλου, Δημήτριος-Ευστάθιος[EN] Chorozoglou, Dimitrios-Efstathios [EL] Παπαδημητρίου, Ελευθερία[EN] Papadimitriou, Eleftheria
Ημερομηνία:	Μαΐ-2019
Περίληψη:	Strong earthquakes (𝑀 ≥ 6.0) may be followed by numerous aftershocks, which steadily decrease in frequency according to Omori law. The stronger aftershock usually causes catastrophic consequences as the strong earthquake that preceded has reduced the durability of buildings. The identification of certain occurrence patterns of strong aftershocks is then of both scientific and societal significance and effective tools are seeking for this scope. The monitoring of complex earthquake networks that are formed from Greek seismicity, based on the evolution of their measures, such as global efficiency, betweenness centrality and clustering coefficient is performed, aiming to identify when these networks exhibit distinct evolution between the main shock and strongest aftershocks occurrence. As network nodes the 2D seismic cells in which the study area was appropriately divided are considered and their connections among the nodes are given by the succession of earthquakes. The data are taken from a seismic catalog comprising crustal earthquakes (focal depth less than 50 km) of magnitude 𝑀 ≥ 3.0 that occurred in the territory of Greece in between 1999-2017. During this period twenty two (22) main shocks of 𝑀 ≥ 6.0 occurred, and is examined the evolution of network measures on earthquake networks before the strongest aftershocks. The earthquake networks are formed on sliding windows of a few days for monitoring the network measures variation. To assess whether the values of network measures are statistically significant the construction of randomized networks is required, and the same network measures are calculated for comparison purposes. The monitoring of network measures revealed that their values were found statistically significantly different from the corresponding values of the randomized networks shortly before the strongest aftershocks.
Γλώσσα:	Αγγλικά
Τόπος δημοσίευσης:	Athens, Greece
Σελίδες:	2
ISBN:	978-960-98709-5-5
EISSN:	2529-1718
Θεματική κατηγορία:	[EL] Γεωφυσική[EN] Geophysics
Κάτοχος πνευματικών δικαιωμάτων:	© 2019 The Author(s)
Σχετίζεται με:	Monitoring earthquake network measures in aftershock sequences in Greece
Ηλεκτρονική διεύθυνση του τεκμηρίου στον εκδότη:	https://ejournals.epublishing.ekt.gr/index.php/geosociety/issue/view/1265/320
Ηλεκτρονική διεύθυνση περιοδικού:	https://ejournals.epublishing.ekt.gr/index.php/geosociety/issue/view/1265
Τίτλος πηγής δημοσίευσης:	Bulletin of the Geological Society of Greece, Sp. Pub. 7 Proceedings of the 15th International Congress of the Geological Society of Greece
Τεύχος:	Special Publication No. 7
Σελίδες τεκμηρίου (στην πηγή):	224-225
Όνομα εκδήλωσης:	15th International Congress of the Geological Society of Greece
Τοποθεσία εκδήλωσης:	Athens, Greece
Ημ/νία έναρξης εκδήλωσης:	22/05/2019
Ημ/νία λήξης εκδήλωσης:	24/05/2019
Σημειώσεις:	The financial support by the European Union and Greece (Partnership Agreement for the Development Framework 2014-2020) for the project "Development and application of time-dependent stochastic models in selected regions of Greece for assessing the seismic hazard" is gratefully acknowledged, MIS5004504.
Εμφανίζεται στις συλλογές:	Ερευνητικές ομάδες