Babak Haghighi - Dept. of Physics, Faculty of Science, Islamic Azad University, mashhad Branch, mashhad,Iran

Seismic waves have been widely studied in relation with earthquake. However, we can also getinformation from non-seismic phenomena occurring before large earthquakes. Some of thesepre-earthquakes for some ,in homogeneity in temperature by several degrees in a wide rangewhich can be seen through satellite imagery. In this research, experimental works forobservation of pre-earthquake phenomena are reviewed and those works with results related tostudies of bullets hitting the rocks which are the simulated pressure in the rock layer. Withcalculation of types of transformed energies, energy losses and surface charge and the energystored in surface are calculated. These studies can be used for future research studies onearthquake precursors.

Earthquakes - seismic phenomena - earthquakes - positive holes - magnetic anomalies - thermal anomalies – ionosphere