Research & Technologies

For Users

About

News

Shear stress with max horizontal compression

Quantectum Earthquake Forecasting System (QEFS) Stress Module calculates global crustal deformation and stress from available earthquake focal mechanisms (CMT catalog, https://www.globalcmt.org) as described in Žalohar et al. (2020a, 2020b). The shear stress is only defined on the existing fault planes (near the tectonic plate boundaries). The maximum horizontal compression and its direction are calculated from the stress tensor (Lund and Townend, 2007). The range of the normalized values of the shear stress is between 0 and 1. The shear stress is calculated with a 1-degree resolution.

Read more:
https://quantectum.com/blog/precursory-stress-changes-before-large-earthquakes/ 
https://quantectum.com/blog/breather-type-oscillations-of-the-global-tectonic-shear-stress-fields/

 

References:

  • Lund, B., Townend, J., 2007. Calculating horizontal stress orientations with full or partial knowledge of the tectonic stress tensor. Geophysical Journal International. https://doi:10.1111/j.1365-246X.2007.03468.x.
  • Žalohar, J., Vičič, B., Potočnik, M., Soklič, N., Komac, M., Hölscher, T., Herlec, U., Dolenec, M., 2020a. Breather-type oscillations of the global tectonic shear stress fields. Journal of Structural Geology. 140, 104185, https://doi.org/10.1016/j.jsg.2020.104185.
  • Žalohar, J., Vičič, B., Potočnik, M., Soklič, N., Komac, M., Hölscher, T., Herlec, U., Dolenec, M., 2020b. Precursory stress changes before large earthquakes; on a new physical law for earthquakes. Journal of structural Geology. https://doi.org/10.1016/j.jsg.2020.104208.