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The geological origin of long wavelength lateral heterogeneity at depths of 300–400km
Author(s) -
Hara Tatsuhiko,
Geller Robert J.
Publication year - 1994
Publication title -
geophysical research letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.007
H-Index - 273
eISSN - 1944-8007
pISSN - 0094-8276
DOI - 10.1029/94gl00514
Subject(s) - geology , wavelength , amplitude , range (aeronautics) , seismology , geophysics , geodesy , optics , physics , materials science , composite material
On the basis of two three‐dimensional (3‐D) models of S‐wave velocity, PUMO [ Hara et at. , 1993] and SH425.2 [ Su and Dziewonski, 1991], we show that the deep roots of cratons and mid‐ocean ridges provide a satisfactory explanation of the pattern and amplitude of the Earth's long wavelength lateral heterogeneity in the depth range from 300 to 400km.