Abstract
The earthquake seasonality of Albania is observed for the period 1901–1990. Of the included 211 earthquakes with magnitude M s⩾4.5, 70% occurred in the year's period November–April. One-third of all earthquakes occur in November and December. The Schuster test is employed to asses the significance of the apparent earthquake seasonality. For five zones of the country, an attempt is made to cross-correlate rainfall and seismic activity. It is found that some zones show a better cross-correlation coefficient than others. Detailed observation has been carried out for all the ‘felt’ earthquakes in Albania with inland epicenters for the period 1969–1990. Some of them followed heavy precipitation. A suggestion that changing underground waters can act as a valve allowing accumulated seismic energy to be released earlier than without groundwater change, is proposed for the case of Albania.
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