Acta Geodaetica et Geophysica

, Volume 53, Issue 4, pp 717–730 | Cite as

On the determination of fault plane solutions of weak crustal earthquakes of Vrancea region (Romania)

  • Luminiţa ArdeleanuEmail author
Original Study


An inversion scheme using only few good quality high-frequency local waveforms was previously applied to estimate the source mechanism for a pilot set of crustal earthquakes with local magnitudes less than 4, from the bend of the South-eastern Carpathians. Taking advantage of the improved velocity and attenuation models recently determined for the study region, we reevaluate the focal mechanism of a couple of low-magnitude events (local magnitude ≥ 3), and assess the uncertainty of the fault plane solutions. The results evidence the increased reliability of the retrieved mechanisms and emphasize the capability of the approach to provide satisfactorily constrained fault plane solutions for the weak-to-moderate earthquakes in the study region.


Vrancea region Crustal earthquakes Focal mechanism High-frequency waveform inversion 



The computations are performed using the software packages developed at the Department of Earth Sciences of the University of Trieste, Italy. The research was supported by the Romanian Ministry of National Education of Romania, Contract PN09 30, Project PN09-01 03, and Romanian Ministry of Research and Innovation, Contract 21N, Project PN 16 35 01 02. The author thanks the two anonymous reviewers for their comments which have helped to improve the paper.


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Copyright information

© Akadémiai Kiadó 2018

Authors and Affiliations

  1. 1.National Institute for Earth PhysicsMăgureleRomania

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