Abstract
ON February 17, an earthquake of considerable intensity was experienced at Gornadjoumaja and Sofia in western Bulgaria. At the same time a strong roaring sound was heard, and many people fled from their homes, though no serious damage or casualties are reported. The epicentre of the shock may have been about fifty miles south of Sofia, where there is the most pronounced seismic centre in Bulgaria. Between the years 1749 and 1936, 1,420 earthquakes had their epicentres in this region, and one at least had an intensity greater than 7 on the Rossi-Forel scale. The most disastrous shocks in Bulgaria in recent years were those of April 14, 17, 18, and 21, 1928, which were felt at Chirpan and Plovdiv and did more than £4,000,000 damage.
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Earthquake in Bulgaria. Nature 143, 328 (1939). https://doi.org/10.1038/143328c0
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DOI: https://doi.org/10.1038/143328c0