A 20-yr database (1997-2017) of co-seismic displacements from GPS recordings in the Aegean area and their scaling with Mw and hypocentral distance
Δημοσιευμένα:
Nov 20, 2018
Λέξεις-κλειδιά:
GNSS Αιγαίο μετατόπιση σεισμός συσχέτιση
Περίληψη
Στην παρούσα εργασία περιγράφουμε και διαθέτουμε μία βάση εξήντα τεσσάρων (64) σεισμικών μετατοπίσεων από τις καταγραφές μόνιμων σταθμών GPS, κατά την εικοσαετή χρονική περίοδο 1997-2017. Οι μετατοπίσεις οφείλονται σε μεγάλους, επιφανειακούς σεισμούς στον Ελληνικό χώρο οι οποίοι προκάλεσαν επιφανειακές κινήσεις (της τάξεως χιλιοστών έως δεκάδων εκατοστών) ανιχνεύσιμες από δίκτυα GPS-GNSS. Στην βάση περιλαμβάνονται δεδομένα μόνιμης μετατόπισης για αποστάσεις μεταξύ 2-132 km από το υπόκεντρο και για 11 σεισμούς με μεγέθη ροπής μεταξύ 5.5≤Mw≤6.9. Αυτά τα δεδομένα είναι χρήσιμα σε γεωλόγους, σεισμολόγους και μηχανικούς επειδή συμβάλουν στην πληρέστερη κατανόηση της μηχανικής των διαρρήξεων, της κατανομής των επιφανειακών παραμορφώσεων μετά από μεγάλους σεισμούς αλλά και σε άλλες εφαρμογές σεισμικής μηχανικής. Επιπλέον, έγινε ανάλυση με πρώτη νόρμα (L1- norm) παλινδρόμησης της απόσβεσης της μόνιμης, οριζόντιας επιφανειακής μετατόπισης συναρτήσει του μεγέθους και υποκεντρικής απόστασης. Βρήκαμε ότι τα δεδομένα μας ταιριάζουν καλύτερα με μία γραμμική συμπεριφορά για αυτό το εύρος μεγεθών. Προτείνουμε δύο εμπειρικές σχέσεις για τον υπολογισμό του σεισμικού μεγέθους βάσει της εδαφικής μετατόπισης και της αποστάσεως από το υπόκεντρο, οι οποίες μπορούν να χρησιμοποιηθούν εφόσον είναι διαθέσιμες επιλύσεις σταθμών σε σχεδόν-πραγματικό χρόνο.
Λεπτομέρειες άρθρου
- Πώς να δημιουργήσετε Αναφορές
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Ganas, A., Andritsou, N., Kosma, C., Argyrakis, P., Tsironi, V., & Drakatos, G. (2018). A 20-yr database (1997-2017) of co-seismic displacements from GPS recordings in the Aegean area and their scaling with Mw and hypocentral distance. Δελτίο της Ελληνικής Γεωλογικής Εταιρείας, 52(1), 98–130. https://doi.org/10.12681/bgsg.18070
- Ενότητα
- GNSS-Γεωδαισία
Αυτή η εργασία είναι αδειοδοτημένη υπό το CC Αναφορά Δημιουργού – Μη Εμπορική Χρήση 4.0.
Οι συγγραφείς θα πρέπει να είναι σύμφωνοι με τα παρακάτω: Οι συγγραφείς των άρθρων που δημοσιεύονται στο περιοδικό διατηρούν τα δικαιώματα πνευματικής ιδιοκτησίας επί των άρθρων τους, δίνοντας στο περιοδικό το δικαίωμα της πρώτης δημοσίευσης. Άρθρα που δημοσιεύονται στο περιοδικό διατίθενται με άδεια Creative Commons 4.0 Non Commercial και σύμφωνα με την οποία μπορούν να χρησιμοποιούνται ελεύθερα, με αναφορά στο/στη συγγραφέα και στην πρώτη δημοσίευση για μη κερδοσκοπικούς σκοπούς. Οι συγγραφείς μπορούν να: Μοιραστούν — αντιγράψουν και αναδιανέμουν το υλικό με κάθε μέσο και τρόπο, Προσαρμόσουν — αναμείξουν, τροποποιήσουν και δημιουργήσουν πάνω στο υλικό.
Λήψεις
Τα δεδομένα λήψης δεν είναι ακόμη διαθέσιμα.
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