Andrija Mohorovicic


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Mohorovičić, Andrija

 

Born Jan. 23, 1857, in Volosko (Opatija), Istria; died Dec. 18, 1936, in Zagreb. Yugoslav geophysicist and seismologist. Member of the Croatian Academy of Sciences (1898).

Mohorovičić began teaching meteorology at the Navigation School in Bakra and Zagreb in 1880. In 1897 he became a privatdocent, and in 1910 a professor at the University of Zagreb. From 1892 to 1921 he also served as the director of the State Administration for the Meteorological and Geodynamic Survey and Observatory in Zagreb.

In 1909, Mohorovičić established the existence of a boundary surface between the earth’s crust and mantle, and this was named the Mohorovičić discontinuity. He worked out a method for recording earthquakes and proposed designs for a number of geophysical instruments.

WORKS

“Die Bestimmung des Epizentrums eines Nahbebens.” Beiträge zur Geophysik, 1916, vol. 14.
References in periodicals archive ?
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.
In the twentieth century, a number of scientists, notably Richard Oldham (an Englishman, 1858-1936), Andrija Mohorovicic (a Croatian, 1857-1936), Inge Lehman (a Danish, 1888-1993), and Beno Guetenberg (a German, 1889-1960), studied seismic waves and used their travel times and paths to unravel the structure of the Earth's interior.
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.