Commensurability of earthquake occurrence

• The commensurability brought by Titius–Bode law is objective distributing law of the matter in a space region.
• The expanding commensurable theory reveals the time law of the occurrence of events in a specified space region.
• The studied results show that the earthquakes basically all occur at the commensurable point of its time axis, respectively.
• The commensurability can provide a scientific basis for the prediction of earthquakes.

During recent years huge earthquakes frequently occurred and caused surprise attack on many places of the globe. Frequent exceptional strong disasters of earthquakes remind that we must strengthen our research on cause of formation, mechanism, prediction and forecast of earthquakes, and achieve the goal of advancing the development of Earth science and mitigation of seismic disasters. The commensurability of earthquake occurrences has been studied by means of the commensurability revealed by the Titius–Bode law in the paper. The studied results show that the earthquakes basically all occur at the commensurable point of its time axis, respectively. It also shows that occurrence of the earthquakes is not accidental, showing certain patterns and inevitability, and the commensurable value is different for earthquakes occurring in different areas.