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The purpose of this study consists in the evaluation of completeness magnitude (Mc), b value spatial variation and seismic energy release in Vrancea crustal seismogenic area, during the period between 1990 and 2021. This parameters are essential for a correct interpretation of seismicity analysis. For the analyses, we have selected from the Romplus seismic catalog (www.infp.ro) the crustal events with depth 0<h<52 Km, and magnitudes 0.1 <Mw <5.4,recorded from 01 January 1990 to 01 March 2021, in the area bordered ...

The macroseismic intensity attenuation and its variation as a function of the epicentral or hypocentral distance is one of the issues in the seismic hazard assessment and of shake map generation. This output is especially required by emergency situation inspectorates or by the insurance companies. The macroseismic intensity investigations are carried out in Romania after all earthquakes with magnitudes larger than 4.0. Starting with 2014 the classical method for macroseismic information collection was doubled by t...

Romania is one of the most seismic-prone countries in Europe due to the periodically occurrence of strong intermediate-depth earthquakes in Vrancea seismogenic zone. In the last decades, many efforts were done to gather macroseismic intensities in case of felt Vrancea earthquakes and additionally an online environment was developed for the automatic approximation of the intensity from people feedback. Besides the extended scientific studies, the near real time estimation of the macroseismic intensity recently beca...

The atmospheric sound waves with frequencies lower than 20Hz are named infrasound waves. Among the multitude of infrasonic signals that have been recorded and detected during time, some of them have been associated with different natural or anthropogenic sources and the source of many other remaining hidden and unknown. At the beginning of year 2013, a permanent infrasound monitoring system composed by a MB AZEL2007 microbarometer, the digitizer and the transmitting equipment, was installed by NIEP, at Mangalia, R...