Benioff zone

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Benioff zone

(ˈbɛnɪəf)
n
(Geological Science) a long narrow region, usually adjacent to a continent, along which earthquake foci lie on a plane which dips downwards at about 45° and along which the oceanic lithosphere is thought to be descending into the earth's interior. Compare subduction zone
[C20: named after Hugo Benioff (1899–1968), American seismologist, who first discovered the phenomenon]
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References in periodicals archive ?
A new look evidence for a Wadati-Benioff zone and active convergence at the north Panama deformed belt.
Using seismic modelling techniques the researchers analysed earthquakes which occurred more than 100 km below Earth's surface in the Wadati-Benioff zone, a plane of Earthquakes that occur in the oceanic plate as it sinks deep into the mantle.
1994: The geometry of the Wadati-Benioff zone under southern Central America and its tectonic significance: results from a high-resolution local seismographic network.
Correlation between the age of the subducting CocosPlate and the geometry of the Wadati-Benioff zone under Nicaragua and Costa Rica", in Mann, P.
Pennington (1981) obtained contours for the Wadati-Benioff Zone (WBZ) beneath northwestern South America and determined three segments with different directions and dip angles: the Bucaramanga segment from 5.
The body waveform inversion of 15 telesismic events and the relocation of 250 hypocenters detected during more than 30 years, allowed an approach to the problem or determination of the geometry of the Wadati-Benioff Zone, with a boundary in isodepth contours in the Colombia-Ecuador Trench.
Depth distribution of stresses in the Kamchatka Wadati-Benioff zone inferred by inversion of earthquake focal mechanisms, Journal of Geodynamics, 31: 355-372.
In Central and Southern Peru, local and teleseismic data allow having insights on the Wadati-Benioff zone (WBZ) geometry.
Seismic activity in this zone locates between isodepths of 80-160km within the Wadati-Benioff zone of Nazca plate, which subducts along the Colombian northwest (Monsalve, 1998), and also along numerous crustal faults.