عنوان مقاله [English]
Â Abstract Geographical placement of Iran especially Azerbaijan area in highly strips and Alpine-Himalayan seismic, causes the earthquakes and their damages as inevitable facts in our country. For this reason, recognition of parameters affecting occurrence of earthquakes and development of new and suitable methods for prediction is necessary in Azerbaijan region. Analyzing the complex spatio-temporal behavior of earthquakes and their relationship to the solar activities is one of the new and modern methods to long-term prediction of earthquakes. In this study, Wavelet and Fourier Transform Analysis were applied for the sequences of sunspots and earthquake activity in Azerbaijan region. The used data ware the Azerbaijan earthquakes of M>3 and sunspots number for the period of 1951-2007. The results indicated the presence of the main period (11-year cycle) and sub-periodicities such as (3, 5and 8 years' cycles) of the sunspots into the time of the earthquakes of the Azerbaijan region. Also, from the Azerbaijan earthquakes data (selected stations) a main periods ranged between 9.3, 6.2 and 3.2 years and sub-periodicities ranged between 3, 4, 6 and 13 years are revealed, which may be linked to a main and sub-periodicities of solar activity cycle. Analysis, results and discussion concluded that: solar activity plays a significant role in the triggering of earthquakes. Therefore, solar activities are a suitable indicator for long-term earthquake prediction both in the world and Iran.