The 1914 Earthquake in the Altai Region

The data on the earthquakes of April 13 and 25, 1914 in Altai from (Novyi katalog…, 1977) have been summarized. Based on an analysis of the earlier publications and the new data from the initial sources, it has been shown that the only seismic event occurred on April 25 (12 old style), 1914. The weak differentiation of macroseismic effects over the area does not allow us to reliably locate the epicenter; the best spatial accuracy is ±50 km. Based on the entire data volume, the magnitude is estimated at 5.5 ± 0.3 which is slightly higher than was believed earlier.