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UNIVERSITY OF BUCHAREST
FACULTY OF PHYSICS Guest
2024-11-23 17:58 |
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Conference: Bucharest University Faculty of Physics 2014 Meeting
Section: Atmosphere and Earth Science; Environment Protection
Title:
Source parameters and scaling relationships for the seismic sequence occurred between 24 and 30 June 2011 in the northern part of Romania (Eastern Carpathians)
Authors:
Anca PLACINTA , Emilia POPESCU, M.RADULIANM, F. BORLEANU, M.DIACONESCU
Affiliation:
National Institute for Earth Physics, Magurele, 077125, Romania
E-mail
anca@infp.ro
Keywords:
earthquake sequence, spectral ratio, empirical Green’s function, source parameters, scaling relationships
Abstract:
We applied relative deconvolution methods (spectral ratios and empirical Green’s function) to estimate the source parameters for the earthquake sequence recorded in the Bucovina Seismic Array area between 24 and 30 June 2011. Basically, these methods are suitable for seismic sequences since they allow the retrieve of the source parameters by using data from pairs of earthquakes located close each other and recorded by common stations. The seismicity in the area adjacent to Bucovina Seismic Array (BURAR), located in the northern part of Romania, in the Eastern Carpathians, is poor and scarce. The crustal seismic sequence produced between 24 and 30 June 2011 is from this point of view a singular seismic phenomenon for this region. The focal mechanism of the main shock is of strike-slip type with a reverse faulting component. The principal axes are oriented EW (compression) and NS (extension). Source parameter scaling relationships are compatible with those obtained for other regions in the world, with intra-continental seismic activity.
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