loading page

Kinematic and dynamic-controlled variations in earthquake-size distribution - a case study from Southern California
  • +3
  • Andrea Carducci,
  • Antonio Petruccelli,
  • Angelo De Santis,
  • Rita de Nardis,
  • Stefan Wiemer,
  • Giusy Lavecchia
Andrea Carducci
University of Chieti-Pescara

Corresponding Author:andrea.carducci@unich.it

Author Profile
Antonio Petruccelli
Author Profile
Angelo De Santis
Istituto Nazionale di Geofisica e Vulcanologia
Author Profile
Rita de Nardis
University of Chieti
Author Profile
Stefan Wiemer
Author Profile
Giusy Lavecchia
University of Chieti
Author Profile


Frequency-magnitude relation of earthquakes from Gutenberg-Richter law is computed in Southern California. A supporting dataset is created, by merging coordinates and magnitudes of relocated earthquakes with kinematic parameters from focal mechanisms. Models of increasing complexity are evaluated to test their dependence on differential stress and kinematics. Parameter b-value is confronted against Aλ, a streamlined version of the kinematic fault parameter, depending on rake values. Multiple regressions of b-values against Aλ at increasing depths are performed, to test the significance of the variation along vertical dimension. A linear equation is finally valued as the most probable model to relate the two parameters.