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UNIVERSITY OF BUCHAREST
FACULTY OF PHYSICS Guest
2024-11-21 20:58 |
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Conference: Bucharest University Faculty of Physics 2008 Meeting
Section: Atmosphere and Earth Science; Environment Protection
Title:
Tomographical research regarding Vrancea seismic zone
Authors:
B. Zaharia (1), M. Radulian(1), M. Popa(1), B. Enescu(2), I. Koulakov(2)
Affiliation:
(1) National Institute for Earth Physics, Magurele,Romania
(2) GeoForschungsZentrum Potsdam, Germany
E-mail
Keywords:
Tomography,lithospherical structure,Vrancea seismic area
Abstract:
Tomography is a modern method used to investigate crustal structure, lower lithosphere, mantle and core. The main goal of this study is to investigate the lithospherical structure from Vrancea seismic area using local earthquakes. Vrancea area is characterized by strong earthquakes with high energies that can produce important damages (4 March, 1977 event). Until now there was made some studies related to Vrancea tomography, but with teleseismic data. Data used for this study are recorded by the seismic network of the National Institute of Earth Physics from 1982 – 2006. The database includes also the local events recorded during the CALIXTO’99 project. The method is applied for a dataset which include about 1000 local earthquakes. Local events offer the possibility to add up the tomographical images from teleseismic data to a local scale (with a great resolution). The program used for tomographical images is LOTOS-06 (Local Tomography Software) and it’s made by Ivan Koulakov from GeoForschungsZentrum, Potsdam.
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