科研之友
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摘要
Recent results provide evidence for the existence of variations in induction vectors associated with geodynamic processes. Earthquakes (EQs) and volcanic eruption precursors have an aperiodic temporal regime and appear once or several times prior to their occurrence. The regular periodic variations of induction vector are also observed, and they are a new interesting geophysical phenomenon. These periodic variations must be considered as a background while looking for precursory signals associated with EQs and volcanic activities. Detailed discussion on the periodic variations of induction vectors is presented in the paper. Annual and diurnal variations obtained from the processing of synchronous data of three observatories in Southeastern Europe - Surlari, Nyzhnie Selysche and Dymer - are discussed for identifying precursory information.
- 出版日期2012
