<> "The repository administrator has not yet configured an RDF license."^^ . <> . . . "Omori law for eruption foreshocks and aftershocks"^^ . "Using the 1973–2009 worldwide catalogs for M ≥ 4.8 seismicity and VEI ≥ 0 volcano\r\neruptions, we compare the properties of seismic damage patterns contemporary with\r\neruption with the properties of foreshocks and aftershocks of classic tectonic earthquakes.\r\nUsing superposed epoch analysis, we demonstrated that the seismicity rate after eruption\r\ndecreases as a power law similar to the Omori law of earthquake aftershocks. We further\r\nshow that a complete mapping of Omori law of earthquake aftershocks onto eruption\r\naftershocks does exist as Rerup(t)= (K0.10b(VEI)\r\n)/[(t+c) p\r\n], volcanic explosivity index\r\n(VEI), being an empirical measure that exponentially scales with eruption size. b close to\r\n0.4 is the value reported for M = 5–6.5 earthquakes from the same catalog. The p values are\r\nin the 0.7 range, i.e., robustly smaller than the 0.9–1.0 range for earthquake aftershocks we\r\nestimated in the volcanic area. K value for eruptions is 2–10 times smaller than for\r\nearthquakes, and it scales with VEI values. All those parameters characterize a slower\r\ndamage relaxation after eruptions than after earthquakes. When earthquakes’ foreshock\r\nrates are proposed to be independent of the main shock magnitude, we resolved a strong\r\nincrease in foreshock rates including an increase of the p′ value of the inverse Omori law\r\nprior eruptions with eruption size. These patterns, all emerging from mean field analysis, are\r\nevidence of the volcanic eruptions being contemporary with a stochastic brittle damage in\r\nthe Earth crust. These results suggest a generic damage relaxation within the Earth crust as\r\npower law distributed after or before events. The loading and relaxation exponents and the\r\ndamage rate emerge as being controlled by the loading rate, as reported during lab-scale\r\nexperiments. The more impulsive the loading, i.e., km/s for the slip velocity during\r\nearthquakes against km/h for dyke propagation, the faster the relaxation (0.9–1.0 p values\r\nfor earthquakes’ aftershocks against 0.7 for eruptions’ aftershocks). Before eruptions, the\r\nlarger the impending events, the higher the p values. All the observations converge toward the\r\namplitude and frequency of the stress step to drive the Omori law parameters as qualitatively\r\nreproduced by the rate and state friction law response of brittle crust faults to loading."^^ . "2012" . . "117" . "B7" . . "American Geophysical Union"^^ . . . "Journal of Geophysical Research"^^ . . . "01480227" . . . . . . . . "A."^^ . "Schmid"^^ . "A. Schmid"^^ . . "Jean-Robert"^^ . "Grasso"^^ . "Jean-Robert Grasso"^^ . . "Institut des Sciences de la Terre, University of Grenoble, Grenoble, France."^^ . . . "Institut des Sciences de la Terre, University of Grenoble, Grenoble, France."^^ . . . . . . "HTML Summary of #2099 \n\nOmori law for eruption foreshocks and aftershocks\n\n" . "text/html" . . . "Collective properties of seismicity" . .