351 citations · 2.7k across the 22 of their papers we have counts for
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Properties of Foreshocks and Aftershocks of the Non-Conservative SOC Olami-Feder-Christensen Model: Triggered or Critical Earthquakes?
A. Helmstetter, S. Hergarten, D. Sornette
Following Hergarten and Neugebauer [2002] who discovered aftershock and foreshock sequences in the Olami-Feder-Christensen (OFC) discrete block-spring earthquake model, we investig…
Intercluster Correlation in Seismicity
Agnes Helmstetter, Didier Sornette
Mega et al.(cond-mat/0212529) proposed to use the ``diffusion entropy'' (DE) method to demonstrate that the distribution of time intervals between a large earthquake (the mainshock…
Bath's law Derived from the Gutenberg-Richter law and from Aftershock Properties
Agnes Helmstetter, Didier Sornette
The empirical Bath's law states that the average difference in magnitude between a mainshock and its largest aftershock is 1.2, regardless of the mainshock magnitude. Following Ver…
Towards Landslide Predictions: Two Case Studies
D. Sornette, A. Helmstetter, J. V. Andersen +3
In a previous work [Helmstetter, 2003], we have proposed a simple physical model to explain the accelerating displacements preceding some catastrophic landslides, based on a slider…
Power Law Distributions of Offspring and Generation Numbers in Branching Models of Earthquake Triggering
A. Saichev, A. Helmstetter, D. Sornette
We consider a general stochastic branching process, which is relevant to earthquakes as well as to many other systems, and we study the distributions of the total number of offspri…
Are Aftershocks of Large Californian Earthquakes Diffusing?
Agnes Helmstetter, Guy Ouillon, Didier Sornette
We analyze 21 aftershock sequences of California to test for evidence of space-time diffusion. Aftershock diffusion may result from stress diffusion and is also predicted by any me…