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Lehmann discontinuity

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Lehmann discontinuity
DbpediaThing
Wikipedia articleDbpedia source
The Lehmann discontinuity refers to an abrupt increase of P-wave and S-wave velocities at the depth of 220±30 km, discovered by seismologist Inge Lehmann. It appears beneath continents, but not usually beneath oceans, and does not readily appear in globally averaged studies. Several explanations have been proposed; a lower limit to the pliable asthenosphere, a phase transition, and most plausibly, depth-variation in the shear wave anisotropy. Further discussion of the Lehmann discontinuity is found in Karato.
Lehmann discontinuity
English Wikipedia http://en.wikipedia.org/wiki/Lehmann_discontinuity
Spanish wikipedia http://es.wikipedia.org/wiki/Discontinuidad_de_Lehmann
Wiki page external link http://www.physics.ucla.edu/~cwp/articles/bolt.html http://books.google.com/books?id=_z2uoqkaHAIC&pg=PA167 http://www.physics.ucla.edu/~cwp/internal/Geophysics/Lehmann,_Inge@84894185.html

Conceptual map: Lehmann discontinuity

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Fecha publicación: 12.5.2015

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