Skip to Main content Skip to Navigation
Journal articles

Extending Earthquakes' Reach Through Cascading.

Abstract : Earthquakes, whatever their size, can trigger other earthquakes. Mainshocks cause aftershocks to occur, which in turn activate their own local aftershock sequences, resulting in a cascade of triggering that extends the reach of the initial mainshock. A long-lasting difficulty is to determine which earthquakes are connected, either directly or indirectly. Here we show that this causal structure can be found probabilistically, with no a priori model nor parameterization. Large regional earthquakes are found to have a short direct influence in comparison to the overall aftershock sequence duration. Relative to these large mainshocks, small earthquakes collectively have a greater effect on triggering. Hence, cascade triggering is a key component in earthquake interactions.
Document type :
Journal articles
Complete list of metadata
Contributor : Pascale Talour Connect in order to contact the contributor
Submitted on : Tuesday, October 28, 2008 - 11:06:00 AM
Last modification on : Monday, May 9, 2022 - 11:58:07 AM




David Marsan, O. Lengline. Extending Earthquakes' Reach Through Cascading.. Science, American Association for the Advancement of Science (AAAS), 2008, 319 (5866), pp.1076 à 1079. ⟨10.1126/science.1148783⟩. ⟨insu-00334983⟩



Record views