Mohorovicic Discontinuity 4
Mohorovicic Discontinuity 4 :
Natural Disaster. (n.) Geology. The boundary between the crust and the mantle of the Earth, which varies from approximately 5 km [3 miles] under the midoceanic ridges to 75 km [46 miles] deep under the continents. This boundary, commonly called "the Moho, " was recognized in 1909 by Croatian seismologist Andrija Mohorovicic on the basis of its abruptly higher compressional wave (P-wave) velocity. Alt. form: Moho. See: Crust, Mantle, Midoceanic Ridge
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