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Records of the magnetometers responding to the effects of big earthquakes were noticed more than a hundred years ago. Even then began to dispute what caused these effects: mechanical vibrations of instruments or electric or magnetic oscillations generated by the earthquakes. In Panagjurishte (PAG) observatory we have great opportunity to shed light on this issue because we have four important instruments installed on the site - three different types of magnetometers and one seismometer. Three large earthquakes wit...

Present paper is a brief story about Bulgarian efforts to integrate data, products and services in Bulgaria into a newly established scientific infrastructure named a National Geoinfomation Center (NGIC) and its efforts to assess and communicate the information about natural hazards and risks to the general public. We started two years ago with the ambitious goal of uniting our observations and research in the area of monitoring and investigation of the Earth’s interior and the near-Earth space. The instrumental u...