G. Georgieva1 , L. Dimitrova2 , V. Gourev1 , V. Protopopova2 , P. Raykova2 , I. Aleksandrova2 , I. Popova2 , D. Dimitrov2
1Sofia University St. Kliment Ohridski
2National Institute of Geophysics, Geodesy and Geography
Abstract:
Bulgarian Antarctic seismic station LIVV was operational during three astral summers between 2015 and 2018 on Livingston Island, Antarctica. The estimated performance of the seismic equipment shows the capability of the station to register seismic events of different nature. More than 12000 seismic events were recorded, most of them related to the seismicity of glaciers. A big number of local earthquakes was also registered. Two methods were used for earthquake location. First one used data from only one station and was based on Golitsyn’s method and Vincenty formula. Second one applied DHypo software with different velocity models and seismic phases from four Spanish stations deployed on Deception Island Volcano and two Argentinean-Italian (AI) stations. To study the glacial seismicity we used different technics and procedures: 1) for epicenter estimations of one type of icequakes a developed code for a single station location was applied; 2) GNSS measurements at the surface of glacier Perunika were conducted and meteorological data were collected.
