Detection capabilities of the BURAR seismic array—contributions to the monitoring of regional and distant seismicity

Abstract

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Source parameters of the earthquake sequence that occurred close to the BURAR array (Romania) between 24 June and 1 July 2011

“…The scaling relationships for earthquake sequences are valuable indicators of geotectonic peculiarities of the area under investigation. Such studies have been done previously for earthquake sequences occurred in the South-Eastern Carpathians foredeep region [Ene- scu et al 1996, Popescu 2000, Popescu and Radulian 2001, Popescu et al 2003, 2011, Radulian et al 2014]. Up to now, there is no systematic investigation of the seismic activity recorded in the northern part of the Moldavian Platform.…”

“…Typically for this class of methods, the path, site and instrument effects are removed by deconvolving the waveform of a lower magnitude event from the main event waveform. The same approach was applied to other earthquake sequences occurred in the South-Eastern Carpathians area [Popescu 2000, Popescu and Radulian 2001, Popescu et al 2003, 2011, Radulian et al 2014.…”

“…With the recent enlargement of the national seismic network [Neagoe et al 2009Popa et al 2015] in the Eastern Carpathians area and installation of a high-performance array in the Bucovina region (Grigore et al, 2004;Borleanu et al, 2011;Ghica, 2011) the occurrence of an earthquake sequence in June -July 2011 in the northern part of the Eastern Carpathians (Figure 1), even if it was of moderate size, provided the best data set ever recorded for the region of the northern Moldavia and the possibility to apply advanced techniques to constrain source parameters.…”

Foreword

“…New, permanent array installations in Eastern Europe, their influence on seismic detection and location capabilities of national networks and their calibration are presented by Borleanu et al (2011), Ghica (2011 and Sanina et al (2011). Ghica (2011) investigated the detection capabilities of the 9-element, small aperture seismic Bukovina array (BURAR) installed in 2002 in north-eastern Romania close to the Ukrainian border.…”

“…Ghica (2011) investigated the detection capabilities of the 9-element, small aperture seismic Bukovina array (BURAR) installed in 2002 in north-eastern Romania close to the Ukrainian border. She describes in detail the installed automatic data processing algorithms based on NORSAR's array software (e.g., Schweitzer et al 2002) and results of four years processing of BURAR data with respect to the regional and teleseismic detection capabilities of the array and the seasonal and azimuthal variance of these capabilities.…”