Among scientists studying seismology the famous Moho layer (or Moho discontinuity)
of the Earth is well known. It was named after the great Croatian geophysicist Andrija Mohorovicic
(born in Volosko, 1857-1936), professor at the University of Zagreb
. His discovery was essential for understanding the inner structure of the Earth and the behavior of seismic waves. Together with the theory of forces due to Rudjer Boskovic
, this is probably the greatest achievement in the history of Croatian science.
Let us cite a part of his biography from Willard Basom's monograph A hole in the Bottom of the Sea, The story of the MOHOLE project
, 1959/61, Doubledays, USA (p. 143):
...As a boy of 15 he spoke Italian, French, and English as well as his native Croatian, later added German, Czech, Latin, and old Greek. He studied physics at the University of Prague under some famous professors including E. Mach and did his graduate work at the University of Zagreb, from which he obtained a Ph.D. In 1894 Dr. Mohorovicic became Director of the Institute for Meteorology and Geodynamics and Professor at the University of Zagreb in 1897, where he remained until his retirement in 1921. His special interest was the precise measurement of time for both astronomical and seismical events, but his reputation mainly rests on his classic paper in the field of seismology, The Earthquake of October 8, 1909, which contains the news of his discovery of a major discontinuity at a depth of 55 kilometers. This discontinuity, now generally known as the Moho in his honor, defines the crust of the earth. Professor Mohorovicic died in 1936 in circumstances approaching poverty.
Photo from an article by Mete Oner: Deepest borehole ever drilled
Two Croatian names appear on the map of the Moon. The name of Rudjer Boskovic was given to a mountain on the visible side, and the name of Andrija Mohorovicic to a mountain on the dark side of the Moon.
Andrija Mohorovicic, links
Formated for CROWN by prof.dr. Darko Zubrinic
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