Fault on-off versus strain rate and earthquakes energy

Overcoming the structural versus energy dissipation trade-off in highly crosslinked polymer networks: Ultrahigh strain rate response in polydicyclopentadiene

Ballistic performance, at effective strain rates of (10–10 s ), for polymeric dicyclopentadiene (pDCPD) was compared with two epoxy resin/diamine systems with comparable glass transition temperatures. The high rate response was characterized in terms of a projectile penetration kinetic energy, KE50, which describes the projectile kinetic energy at a velocity with a 50% probability of sample pen...

Normal fault earthquakes or graviquakes

Earthquakes are dissipation of energy throughout elastic waves. Canonically is the elastic energy accumulated during the interseismic period. However, in crustal extensional settings, gravity is the main energy source for hangingwall fault collapsing. Gravitational potential is about 100 times larger than the observed magnitude, far more than enough to explain the earthquake. Therefore, normal ...

Geophysics. Past and future earthquakes on the San Andreas Fault.

Fault geometry and earthquakes in continental interiors

Although large earthquakes in continental interiors are much less frequent than those along plate boundaries, they have been responsible for a disproportionate amount of destruction. I present a testable model for strain accumulation and seismicity in the upper crust of continental interiors. Intersecting faults provide a focus for strain build-up, resulting in local pockets of high strain accu...

Earthquakes, Aftershocks, and Total Energy

History demonstrates the great value of frequency domain data for understanding the physics of complex processes. The Cumulative Spectral Power (CSP) opens a new window into the study of earthquake evolution [2]. For this purpose, the CSP has a significant advantage over the Power Spectral Density (PSD) from which it is derived by integration. The FFT spectrum used to generate the PSD is inhere...