Български
English 
CONTENTS
- I. Aleksandrova, S. Simeonova, D. Solakov and P. Raykova – Deterministic seismic scenarios based on macroseismic intensity generated by real strong earthquakes of the past
- R. Bojilova – Ionospheric anomalies over Bulgaria during two geomagnetic storms
- M. Popova – Relations between MP and Ml magnitude scales
- R. Bojilova – Three geomagnetic storms in january 2005 and their impact on total electron content
- G. Gadzhev – Recurrence of air quality for the city of Sofia for 2013 and 2014
- P. Muhtarov, N. Miloshev – The ozone layer over Bulgaria in the period 1997-2018
- M. Metodiev, P. Trifonova – Annual report of the observed geomagnetic activity in Panagjurishte observatory for 2013
- E. Botev, V. Protopopova, I. Aleksandrova, B. Babachkova, S. Velichkova, I. Popova, P. Raykova, M. Popova, T. Iliev – Data and analisis of the events recorded by NOTSSI in 2015
- E. Botev, V. Protopopova, I. Aleksandrova, B. Babachkova, S. Velichkova, I. Popova, P. Raykova, M. Popova, T. Iliev – Data and analisis of the events recorded by NOTSSI in 2016
