Abstract
Tribology plays an important role for understanding the dynamic earthquake slip process because the earthquake slip process is a
frictional phenomenon that occurs on a crack plane embedded in underground rock. For instance, the rate-and-state friction law,
which depends on slip velocity and a state variable, has been widely employed in seismology to understand the process. For
seismology, it is important to emphasize that the unified system, which includes the crack plane and the surrounding rocks, is
treated. Microcracks generation around the crack plane and changes in the pressure of fluid in the pores within the surrounding
rocks are important features of the system. The interaction among these processes can provide seismologists with valuable insights
and have implications for nonlinear dynamics.
