more about earthquake physics building on laboratory experiments.
Topics of the course
lecture on: Fracture and crack mechanics (dislocation model for stress and
Dislocation model for stress and slip. Stress
Friction: Da Vinci, Amontons, Coulomb,
Rabinowicz-Tabor-Bowden (1950’s). Mohr circles and the optimum angle of
Adhesive theory of
friction (Contact junction size, friction as the ratio of material hardness and
shear strength, concepts of static & dynamic friction, critical friction
distance, contact age, velocity weakening friction and contact size, contact
aging or frictional healing, frictional state-contact age).
Mechanics of frictional sliding: stick-slip. Discussion
on Rabinowicz paper.
State Friction constitutive laws part A and B.
Rate & State Friction constitutive laws part C and D
Sapienza rock deformation and earthquake physics lab & spring slider.
rocks, deformation processes and fault structure.
What is the shear stress, or differential stress, required to make a crustal
What is the fault slip behavior (seismic vs. aseismic) upon
Induced and triggered seismicity from the geo-energy
activities (wastewater disposals, enhanced oil recovery, EOR, fracking, carbon
capture and storage, CCS, enhanced geothermal systems (EGS), reservoir
depletion): examples worldwide.
deformation experiments for improving our understanding of induced seismicity.
Visit Sapienza rock deformation and earthquake physics
lab: what we measure in the lab and how.
Python on laboratory experiments on friction.
plotting earthquakes of the Amatrice-Visso-Norcia sequence (4h).
fault rheology to explain the seismicity of Amatrice-Visso-Norcia part A
fault rheology to explain the seismicity of Amatrice-Visso-Norcia part B
The mechanics of slow slip part A
mechanics of slow slip part B