Traveling Foreshocks and Transient Foreshock Phenomena
نویسندگان
چکیده
منابع مشابه
Mainshocks are Aftershocks of Conditional Foreshocks: How do Foreshock Statistical Properties Emerge from Aftershock Laws
The inverse Omori law for foreshocks discovered in the 1970s states that the rate of earthquakes prior to a mainshock increases on average as a power law ∝ 1/(tc − t) p ′ of the time to the mainshock occurring at tc. Here, we show that this law results from the direct Omori law for aftershocks describing the power law decay ∼ 1/(t − tc) p of seismicity after an earthquake, provided that any ear...
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The rate- and state-dependent constitutive formulation for fault slip characterizes an exceptional variety of materials over a wide range of sliding conditions. This formulation provides a unified representation of diverse sliding phenomena including slip weakening over a characteristic sliding distance Dc, apparent fracture energy at a rupture front, time-dependent healing after rapid slip, an...
متن کاملThe spatial density of foreshocks
[1] Aftershocks follow a well‐defined spatial decay pattern in the intermediate field. Here I investigate the same pattern for foreshocks. Foreshock linear density decays as r over distances r of 0.1–30 km for 15 minutes before magnitude 3–4 mainshocks. This trend is the same as that of the aftershocks within the error of the measurement. This consistency of spatial decay can be explained by th...
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ژورنال
عنوان ژورنال: Journal of Geophysical Research: Space Physics
سال: 2017
ISSN: 2169-9380
DOI: 10.1002/2017ja023901