Andrija Mohorovicic

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Noun1.Andrija Mohorovicic - Yugoslav geophysicist for whom the Mohorovicic discontinuity was named (1857-1936)
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Reaching the boundary between the Earth's crust and mantle, named for Croatian seismologist Andrija Mohorovicic, would allow scientists to peer directly into the Earth's innards, providing new insight into the planet's makeup and history and informing controversial ideas about continental drift.
One of the first results was the discovery that the ocean crust appeared to present a consistent, layered seismic structure composed of sediments (layer 1 at the seafloor) followed by two layers with rapidly increasing sound velocity, and then a reflector, dubbed the Moho after the its discoverer, a Czechoslovakian seismologist named Andrija Mohorovicic. What surprised scientists was the Moho was found at a very shallow, nearly constant depth of 6 to 7 kilometers, and that seismic layers 2 and 3 above also appeared uniform in the oceans, whereas this boundary ranges from 35 to 60 kilometers deep beneath continents.
There was an earthquake in the Balkans in 1909, and a Croatian geologist, Andrija Mohorovicic (1857-1936), studied the waves that traveled through the Earth's crust as a result.