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ANDRIJA MOHOROVIČIĆ MEMORIAL ROOMS

The memorial rooms of renowned geophysicist Andrija Mohorovicic were opened at the Department of Geophysics (Faculty of Science, University of Zagreb) on 9 November 2005, exactly 125 years from the great Zagreb earthquake. On this occasion we also marked 100th anniversary of the Zagreb seismological observatory, 95th anniversary of the discovery of the Mohorovicic discontinuity and 70 years since Mohorovicic's death. Mohorovicic started his career as a meteorologist, rst in Bakar, and afterwards in Meteorological observatory in Zagreb, of which he became a director in 1892. At the turn of the centuries, his scientic interest turned to seismology in which he earned his international reputation. Analysing the Kupa valley earthquake of 8 October 1909 he was able to prove the existence of the thin boundary layer between the Earth's crust and mantle, later called after him the Mohorovicic discontinuity. This is without any doubt the most important scientic discovery ever published in a Croatian journal. Some of his ideas were truly visionary  e.g. eects of earthquakes on buildings, harvesting the wind energy, hail suppression, models of Earth and atmosphere. Mohorovicic is today recognized not only as the founder of Croatian seismology, but also as initiator of Croatian meteorological and time-keeping services. One Moon crater and one asteroid were named in his honor. The two memorial rooms hold exhibits related to Mohorovicic's life, and his scientic and professional work. They include original documents (letters, manuscripts, computations, reports, notebooks, travel-time charts. . . ), publications, furniture and original instruments  all restored and in working condition! The most valuable exhibits are the Sprung-Fuess microbarograph (1903  one of the few remaining in the world), the passage-instrument (prior to 1892), a collection of observatory clocks and chronographs, and three Wiechert seismographs  horizontal instruments of 80 and 1000 kg (1908 and 1909, respectively) and a vertical one (1200 kg).

Andrija Mohorovičić; memorial rooms

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