Definition
Inclined thin planar zone of seismicity down to depths of about 700 km resulting from processes related to the subduction of an oceanic plate including interaction of descending and overriding plate.
Introduction
About three quarters of all tectonic earthquakes, both along all types of plate boundaries and in various intraplate environments, initiate at shallow depth of less than about 60 km. Among them are the largest earthquakes with Mw larger than 9, which solely occur in the seismogenic zone, the shallow portion of the plate interface in subduction zones. The remaining quarter of tectonic earthquakes occurs in depths deeper than about 60 km and as deep as close to 700 km. These deep earthquakes are nearly exclusively identified along inclined narrow zones of intraplate seismicity within the downgoing oceanic plate in subduction zones, the so-called Wadati-Benioff zones (Figure 1).
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Kukowski, N. (2016). Wadati-Benioff-Zone. In: Harff, J., Meschede, M., Petersen, S., Thiede, J. (eds) Encyclopedia of Marine Geosciences. Encyclopedia of Earth Sciences Series. Springer, Dordrecht. https://doi.org/10.1007/978-94-007-6238-1_108
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