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Andrija Mohorovičić

February 16, 2024

Andrija Mohorovičić (23 January 1857 – 18 December 1936) was a Croatian[1] geophysicist. He is best known for the eponymous Mohorovičić discontinuity and is considered one of the founders of modern seismology.[2][3]

Andrija Mohorovičić
Portrait of Andrija Mohorovičić
Born23 January 1857
Opatija, Austrian Littoral, Austrian Empire
Died18 December 1936(1936-12-18) (aged 79)
Zagreb, Sava Banovina, Kingdom of Yugoslavia
Known forEponym for the Mohorovičić discontinuity

Early years edit

 
The house in Volosko where Mohorovičić was born

Mohorovičić was born in Volosko, Opatija, where his father (also named Andrija), was a blacksmith, making anchors. The younger Andrija also loved the sea and married a captain's daughter, Silvija Vernić. They had four sons. Mohorovičić obtained his elementary education in his home town, then continued at the gymnasium of neighbouring Rijeka. He received his higher education in mathematics and physics at the Faculty of Philosophy in Prague in 1875, where one of his professors was Ernst Mach. At 15, Mohorovičić knew Italian, English and French. Later he learned German, Latin, and Ancient Greek.[4]

 
Mohorovičić c. 1880
 
Detail of a commemorative plaque of Mohorovičić in Clementinum, Prague, Czech Republic
 
Mohorovičić on a 1963 Yugoslavian stamp

Career in education edit

He taught first at high school in Zagreb (1879–1880), then at secondary school in Osijek. From 1882, he taught for nine years at the Royal Nautical School in Bakar, near Rijeka. Work started or completed there was important to his later scientific career. From 1893, when he became a corresponding member of the Faculty of Philosophy, University of Zagreb, to 1917–18 he taught in the fields of geophysics and astronomy. In 1898 he became a full member of what was then the Yugoslav Academy of Sciences and Arts in Zagreb, where he was a private docent. In 1910 he became a titular associate university professor.[4]

Meteorology edit

In Bakar he was first exposed to meteorology, which he taught at the Royal Nautical School. This influenced him to the extent that he founded the local meteorological station in 1887. He made systematic studies and both invented and constructed instruments to observe precipitation in Croatia and Slavonia. At his own request in 1891, he was transferred to the secondary school in Zagreb where, in 1892, he soon became a head of the Meteorological Observatory in Grič and established a service for all Croatia, while teaching geophysics and astronomy at the university.[4][5]

On 13 March 1892, he observed the tornado in Novska, which picked up a 13-ton railway carriage with fifty passengers and threw it 30 m. He observed also the "vihor" (whirlwind) near Čazma in 1898 and studied the climate in Zagreb. Mohorovičić was the first person to describe atmospheric rotors with a horizontal axis, which he observed during bora-wind episodes in the northern Adriatic.[6] In his last paper on meteorology (1901), he discussed the decrease in atmospheric temperature with height. His observations of clouds formed the basis of his doctoral thesis On the Observation of Clouds, the Daily and Annual Cloud Period in Bakar presented to the University of Zagreb and which earned him his degree as doctor of philosophy in 1893.[4][5]

Seismology edit

On 8 October 1909 there was an earthquake with its epicenter in the Pokuplje region, 39 km southeast of Zagreb. A number of seismographs had been installed beforehand and these provided invaluable data, upon which he made new discoveries. He concluded that when seismic waves strike the boundary between different types of material, they are reflected and refracted, just as light is when striking a prism, and that when earthquakes occur, two waves—longitudinal and transverse—propagate through the soil with different velocities. By analyzing data from more observation posts, Mohorovičić concluded that the Earth has several layers above a core. He was the first to establish, based on the evidence from seismic waves, the discontinuity that separates the Earth's crust from its mantle. This is now called the Mohorovičić discontinuity or (because of the complexity of that name) Moho. According to Mohorovičić, a layered structure would explain the observation of depths where seismic waves change speed and the difference in chemical composition between rocks from the crust and those from the mantle. From the data, he estimated the thickness of the upper layer (crust) to be 54 km.[7] We know today that the crust is 5–9 km below the ocean floor and 25–60 km below the continents, which are carried on tectonic plates. Subsequent study of the Earth's interior confirmed the existence of the discontinuity under all continents and oceans.

Mohorovičić assumed that the velocity of seismic waves increases with the depth. The function he proposed to calculate the velocity of seismic waves is called the Mohorovičić law.[8][9] He developed a method for determining earthquake epicenters[10] and constructed curves giving the travel times of seismic waves over distances of up to 10,000 miles from the source.[11][12] He also proposed the construction of a new type of seismograph for recording the ground horizontal movement, but due to lack of funds the project was never realized.[13]

As early as 1909 Mohorovičić started giving lectures that both architects and building contractors should follow, ahead of his time setting some of the basic principles of earthquake-resistant design.[4][14] Mohorovičić's theories were visionary and were only truly understood many years later from detailed observations of the effects of earthquakes on buildings, deep focus earthquakes, locating earthquake epicenters, Earth models, seismographs, harnessing the energy of the wind, hail defence and other related elements of the geological body of knowledge known as geoscience.

Legacy edit

The crater Mohorovičić on the far side of the Moon is named in his honour. A gymnasium in Rijeka, Croatia and a school ship in the Croatian Navy are named after him, as was (in 1996) asteroid 8422 Mohorovičıć.

Works edit

  • A. Mohorovičić (1908). "Epicenters of earthquakes in Croatia and Slavonia (Epicentra potresa u Hrvatskoj i Slavoniji)". Yearly Report of the Zagreb Meteorological Observatory for the Year 1906. Part IV. pp. 15–19.
  • A. Mohorovičić (1910). "Epicenters of earthquakes in Croatia and Slavonia (Epicentra potresa u Hrvatskoj i Slavoniji)". Yearly Report of the Zagreb Meteorological Observatory for the Year 1909.
  • A. Mohorovičić (1911). "The effects of earthquakes on buildings (Djelovanje potresa na zgrade)". Vijesti HRV. Društva in. I arh.
  • A. Mohorovičić (1914). "Hodograph der normalen P-Wellen fur eine mittlere Herdtiefe". Beilage zu den Seismischen Aufzeichnungen. Kr. Zem. Zavod Za Meteorologiju I Geodinamiku, Zagreb.
  • A. Mohorovičić (1914). "Hodograph der ersten longitudinalen Wellen eines Bebens (emersio undarum primarum)". Bulletin des travaux de l'Académie Yougoslave des Sciences et des Beaux-arts, Classe des sciences mathématiques et naturelles. Vol. 2. pp. 139–157.
  • A. Mohorovičić (1915). "Neue Phasen im Anfange des Bildes eines Bebens". Bulletin des travaux de l'Académie Yougoslave des Sciences et des Beaux-arts, Classe des sciences mathématiques et naturelles. Vol. 4. pp. 65–86.
  • A. Mohorovičić (1915). "Zu dem mittelitalienischen Beben vom 13. Jänner 1915. 2. Beilage zu den Seismischen Aufzeichnungen". Kr. Zem. Zavod Za Meteorologiju I Geodinamiku, Zagreb. Vol. 5.
  • A. Mohorovičić (1915). "Zur Frage der Emergenzgeschwindigkeit. 1. Beilage zu den Seismischen Aufzeichnungen". Kr. Zem. Zavod Za Meteorologiju I Geodinamiku, Zagreb. Vol. 4.
  • A. Mohorovičić (1915). "Zur Frage der Emergenzgeschwindigkeit. 1. Beilage zu den Seismischen Aufzeichnungen". Kr. Zem. Zavod Za Meteorologiju I Geodinamiku, Zagreb. Vol. 4.
  • A. Mohorovičić (1916). "Die Bestimmung des Epizentrums eines Nahbebens". Gerlands Beiträge zur Geophysik. Vol. 14. pp. 199–205.
  • A. Mohorovičić (1916). "Die Bestimmung des Epizentrums eines Nahbebens". Gerlands Beiträge zur Geophysik. Vol. 14. pp. 199–205.
  • A. Mohorovičić (1916). "Vorlaufige Mitteilung uber das Beben vom 12. III. 1916. Berichte uber seismische Aufzeichnungen". Kr. Zem. Zavod Za Meteorologiju I Geodinamiku, Zagreb.
  • A. Mohorovičić (1917). "Principles and construction of a seismograph, and a proposal for construction of a new seismograph for recording of horizontal component of ground motion (Principi konstrukcije sismografa i prijedlog za konstrukciju nova sismografa za horizontalne komponente gibanja zemlje)". Rad JAZU. Vol. 217. pp. 114–150.
  • A. Mohorovičić; S.Mohorovičić (1922). "Hodographs of the longitudinal and transversal earthquake waves (undae primae et undae secundae) (Hodografi longitudinalnih i transversalnih valova potresa (undae primae et undae secundae)). Part 1. Hodographs". Rad JAZU. Vol. 226. pp. 94–190.
  • A. Mohorovičić (1924). "A critical review of the seismic instruments used today and of the organisation of seismic service". Rad JAZU. Vol. 14. pp. 38–59.
  • A. Mohorovičić (1925). "Hodographes des ondes normales P et S soulignees (Pn, P*, S*) et des deux premieres reflexions pour les profondeurs de l'hypocentre de 0, 25, 45, 57 kms". UGGI, Section de Seismologie, A. Travaux Scientifique. Vol. 3. pp. 1–60.
  • A. Mohorovičić (1926). "Zur Frage der wahren Empfindlichkeit eines Seismographen". Gerlands Beiträge zur Geophysik. Vol. 15. pp. 201–214.

See also edit

References edit

  1. ^ krispiessens (29 January 2021). "Croatian earthquakes – Discovery of the Mohorovičić (Moho) discontinuity". GeoERA. Retrieved 4 November 2022.
  2. ^ "Andrya (Andrija) Mohorovicic". Penn State. Archived from the original on 26 June 2013. Retrieved 30 January 2021.
  3. ^ "Mohorovičić, Andrija". Encyclopedia.com. Archived from the original on 1 February 2021. Retrieved 30 January 2021.
  4. ^ a b c d e "Andrija Mohorovičić (1857–1936)—On the occasion of the 150th anniversary of his birth". seismosoc.org/. Seismological Research Letters. Retrieved 20 January 2015.
  5. ^ a b Orlić, Mirko (December 2007). "Andrija Mohorovičić as a meteorologist". Geofizika. 24 (2): 75–91. Retrieved 20 January 2015.
  6. ^ V. Grubišić; M. Orlić (2007). "Early Observations of Rotor Clouds by Andrija Mohorovičić". Bull. Amer. Meteor. Soc. 88 (5): 693–700. Bibcode:2007BAMS...88..693G. doi:10.1175/BAMS-88-5-693.
  7. ^ Mohorovičić, A. (1910). "Das Beben vom 8. X. 1909" [The quake of 8 October 1909]. Godišnje izvješće Zagrebačkog meteorološkog opservatorija za godinu 1909 / Jahrbuch des meteorologischen Observatoriums in Zagreb (Agram) für das Jahr 1909 [Yearbook of the meteorological observatory in Zagreb (Agram) for the year 1909] (in German): 1–63. Mohorovičić had observed (p.28) that quakes seemed to generate two types of preliminary tremors (i.e., the earliest recorded tremors from a quake): one type was detected only by stations that were up to 300 km from the epicenter and other type was detected only by stations that were 700 km from the epicenter. After calculating the waves' transit times, Mohorovičić concluded (p. 38) that waves from earthquakes were being reflected by a discontinuity which was located approximately 50 km below the Earth's surface: "Ich entschied mich für eine abgerundete Tiefe von 50 km." (I decided on a rounded-off depth of 50 km.)
  8. ^ K. E. Bullen (1985). An Introduction to the Theory of Seismology. Press Syndicate of the University of Cambridge. ISBN 9780521283892.
  9. ^ "Discontinuity". gfz.hr. Retrieved 20 January 2015.
  10. ^ A. Mohorovičić (1916). "Die Bestimmung des Epizentrums eines Nahbebens". Gerlands Beiträge zur Geophysik. Vol. 14. pp. 199–205.
  11. ^ A. Mohorovičić (1914). "Hodograph der normalen P-Wellen fur eine mittlere Herdtiefe". Beilage zu den Seismischen Aufzeichnungen. Kr. Zem. Zavod Za Meteorologiju I Geodinamiku, Zagreb.
  12. ^ A. Mohorovičić (1914). "Hodograph der ersten longitudinalen Wellen eines Bebens (emersio undarum primarum)". Bulletin des travaux de 1'Académie Yougoslave des Sciences et des Beaux-arts, Classe des sciences mathématiques et naturelles. Vol. 2. pp. 139–157.
  13. ^ A. Mohorovičić (1917). "Principles and construction of a seismograph, and a proposal for construction of a new seismograph for recording of horizontal component of ground motion (Principi konstrukcije sismografa i prijedlog za konstrukciju nova sismografa za horizontalne komponente gibanja zemlje)". Rad JAZU. Vol. 217. pp. 114–150.
  14. ^ A. Mohorovičić (1911). "The effects of earthquakes on buildings (Djelovanje potresa na zgrade)". Vijesti HRV. Društva in. I arh.

External links edit

 
Wikimedia Commons has media related to Andrija Mohorovičić.
  • Prominent Istrians – Andrija Mohorovičić
  • Andrija Mohorovičić (in Croatian)
  • (in Croatian). Archived from the original on 16 March 2007.
  • geofizika-journal.gfz.hr (PDF)

February 16, 2024
andrija, mohorovičić, january, 1857, december, 1936, croatian, geophysicist, best, known, eponymous, mohorovičić, discontinuity, considered, founders, modern, seismology, portrait, born23, january, 1857opatija, austrian, littoral, austrian, empiredied18, decem. Andrija Mohorovicic 23 January 1857 18 December 1936 was a Croatian 1 geophysicist He is best known for the eponymous Mohorovicic discontinuity and is considered one of the founders of modern seismology 2 3 Andrija MohorovicicPortrait of Andrija MohorovicicBorn23 January 1857Opatija Austrian Littoral Austrian EmpireDied18 December 1936 1936 12 18 aged 79 Zagreb Sava Banovina Kingdom of YugoslaviaKnown forEponym for the Mohorovicic discontinuity Contents 1 Early years 2 Career in education 3 Meteorology 4 Seismology 5 Legacy 6 Works 7 See also 8 References 9 External linksEarly years edit nbsp The house in Volosko where Mohorovicic was bornMohorovicic was born in Volosko Opatija where his father also named Andrija was a blacksmith making anchors The younger Andrija also loved the sea and married a captain s daughter Silvija Vernic They had four sons Mohorovicic obtained his elementary education in his home town then continued at the gymnasium of neighbouring Rijeka He received his higher education in mathematics and physics at the Faculty of Philosophy in Prague in 1875 where one of his professors was Ernst Mach At 15 Mohorovicic knew Italian English and French Later he learned German Latin and Ancient Greek 4 nbsp Mohorovicic c 1880 nbsp Detail of a commemorative plaque of Mohorovicic in Clementinum Prague Czech Republic nbsp Mohorovicic on a 1963 Yugoslavian stampCareer in education editHe taught first at high school in Zagreb 1879 1880 then at secondary school in Osijek From 1882 he taught for nine years at the Royal Nautical School in Bakar near Rijeka Work started or completed there was important to his later scientific career From 1893 when he became a corresponding member of the Faculty of Philosophy University of Zagreb to 1917 18 he taught in the fields of geophysics and astronomy In 1898 he became a full member of what was then the Yugoslav Academy of Sciences and Arts in Zagreb where he was a private docent In 1910 he became a titular associate university professor 4 Meteorology editIn Bakar he was first exposed to meteorology which he taught at the Royal Nautical School This influenced him to the extent that he founded the local meteorological station in 1887 He made systematic studies and both invented and constructed instruments to observe precipitation in Croatia and Slavonia At his own request in 1891 he was transferred to the secondary school in Zagreb where in 1892 he soon became a head of the Meteorological Observatory in Gric and established a service for all Croatia while teaching geophysics and astronomy at the university 4 5 On 13 March 1892 he observed the tornado in Novska which picked up a 13 ton railway carriage with fifty passengers and threw it 30 m He observed also the vihor whirlwind near Cazma in 1898 and studied the climate in Zagreb Mohorovicic was the first person to describe atmospheric rotors with a horizontal axis which he observed during bora wind episodes in the northern Adriatic 6 In his last paper on meteorology 1901 he discussed the decrease in atmospheric temperature with height His observations of clouds formed the basis of his doctoral thesis On the Observation of Clouds the Daily and Annual Cloud Period in Bakar presented to the University of Zagreb and which earned him his degree as doctor of philosophy in 1893 4 5 Seismology editOn 8 October 1909 there was an earthquake with its epicenter in the Pokuplje region 39 km southeast of Zagreb A number of seismographs had been installed beforehand and these provided invaluable data upon which he made new discoveries He concluded that when seismic waves strike the boundary between different types of material they are reflected and refracted just as light is when striking a prism and that when earthquakes occur two waves longitudinal and transverse propagate through the soil with different velocities By analyzing data from more observation posts Mohorovicic concluded that the Earth has several layers above a core He was the first to establish based on the evidence from seismic waves the discontinuity that separates the Earth s crust from its mantle This is now called the Mohorovicic discontinuity or because of the complexity of that name Moho According to Mohorovicic a layered structure would explain the observation of depths where seismic waves change speed and the difference in chemical composition between rocks from the crust and those from the mantle From the data he estimated the thickness of the upper layer crust to be 54 km 7 We know today that the crust is 5 9 km below the ocean floor and 25 60 km below the continents which are carried on tectonic plates Subsequent study of the Earth s interior confirmed the existence of the discontinuity under all continents and oceans Mohorovicic assumed that the velocity of seismic waves increases with the depth The function he proposed to calculate the velocity of seismic waves is called the Mohorovicic law 8 9 He developed a method for determining earthquake epicenters 10 and constructed curves giving the travel times of seismic waves over distances of up to 10 000 miles from the source 11 12 He also proposed the construction of a new type of seismograph for recording the ground horizontal movement but due to lack of funds the project was never realized 13 As early as 1909 Mohorovicic started giving lectures that both architects and building contractors should follow ahead of his time setting some of the basic principles of earthquake resistant design 4 14 Mohorovicic s theories were visionary and were only truly understood many years later from detailed observations of the effects of earthquakes on buildings deep focus earthquakes locating earthquake epicenters Earth models seismographs harnessing the energy of the wind hail defence and other related elements of the geological body of knowledge known as geoscience Legacy editThe crater Mohorovicic on the far side of the Moon is named in his honour A gymnasium in Rijeka Croatia and a school ship in the Croatian Navy are named after him as was in 1996 asteroid 8422 Mohorovicic Works editA Mohorovicic 1908 Epicenters of earthquakes in Croatia and Slavonia Epicentra potresa u Hrvatskoj i Slavoniji Yearly Report of the Zagreb Meteorological Observatory for the Year 1906 Part IV pp 15 19 A Mohorovicic 1910 Epicenters of earthquakes in Croatia and Slavonia Epicentra potresa u Hrvatskoj i Slavoniji Yearly Report of the Zagreb Meteorological Observatory for the Year 1909 A Mohorovicic 1911 The effects of earthquakes on buildings Djelovanje potresa na zgrade Vijesti HRV Drustva in I arh A Mohorovicic 1914 Hodograph der normalen P Wellen fur eine mittlere Herdtiefe Beilage zu den Seismischen Aufzeichnungen Kr Zem Zavod Za Meteorologiju I Geodinamiku Zagreb A Mohorovicic 1914 Hodograph der ersten longitudinalen Wellen eines Bebens emersio undarum primarum Bulletin des travaux de l Academie Yougoslave des Sciences et des Beaux arts Classe des sciences mathematiques et naturelles Vol 2 pp 139 157 A Mohorovicic 1915 Neue Phasen im Anfange des Bildes eines Bebens Bulletin des travaux de l Academie Yougoslave des Sciences et des Beaux arts Classe des sciences mathematiques et naturelles Vol 4 pp 65 86 A Mohorovicic 1915 Zu dem mittelitalienischen Beben vom 13 Janner 1915 2 Beilage zu den Seismischen Aufzeichnungen Kr Zem Zavod Za Meteorologiju I Geodinamiku Zagreb Vol 5 A Mohorovicic 1915 Zur Frage der Emergenzgeschwindigkeit 1 Beilage zu den Seismischen Aufzeichnungen Kr Zem Zavod Za Meteorologiju I Geodinamiku Zagreb Vol 4 A Mohorovicic 1915 Zur Frage der Emergenzgeschwindigkeit 1 Beilage zu den Seismischen Aufzeichnungen Kr Zem Zavod Za Meteorologiju I Geodinamiku Zagreb Vol 4 A Mohorovicic 1916 Die Bestimmung des Epizentrums eines Nahbebens Gerlands Beitrage zur Geophysik Vol 14 pp 199 205 A Mohorovicic 1916 Die Bestimmung des Epizentrums eines Nahbebens Gerlands Beitrage zur Geophysik Vol 14 pp 199 205 A Mohorovicic 1916 Vorlaufige Mitteilung uber das Beben vom 12 III 1916 Berichte uber seismische Aufzeichnungen Kr Zem Zavod Za Meteorologiju I Geodinamiku Zagreb A Mohorovicic 1917 Principles and construction of a seismograph and a proposal for construction of a new seismograph for recording of horizontal component of ground motion Principi konstrukcije sismografa i prijedlog za konstrukciju nova sismografa za horizontalne komponente gibanja zemlje Rad JAZU Vol 217 pp 114 150 A Mohorovicic S Mohorovicic 1922 Hodographs of the longitudinal and transversal earthquake waves undae primae et undae secundae Hodografi longitudinalnih i transversalnih valova potresa undae primae et undae secundae Part 1 Hodographs Rad JAZU Vol 226 pp 94 190 A Mohorovicic 1924 A critical review of the seismic instruments used today and of the organisation of seismic service Rad JAZU Vol 14 pp 38 59 A Mohorovicic 1925 Hodographes des ondes normales P et S soulignees Pn P S et des deux premieres reflexions pour les profondeurs de l hypocentre de 0 25 45 57 kms UGGI Section de Seismologie A Travaux Scientifique Vol 3 pp 1 60 A Mohorovicic 1926 Zur Frage der wahren Empfindlichkeit eines Seismographen Gerlands Beitrage zur Geophysik Vol 15 pp 201 214 See also editProject MoholeReferences edit krispiessens 29 January 2021 Croatian earthquakes Discovery of the Mohorovicic Moho discontinuity GeoERA Retrieved 4 November 2022 Andrya Andrija Mohorovicic Penn State Archived from the original on 26 June 2013 Retrieved 30 January 2021 Mohorovicic Andrija Encyclopedia com Archived from the original on 1 February 2021 Retrieved 30 January 2021 a b c d e Andrija Mohorovicic 1857 1936 On the occasion of the 150th anniversary of his birth seismosoc org Seismological Research Letters Retrieved 20 January 2015 a b Orlic Mirko December 2007 Andrija Mohorovicic as a meteorologist Geofizika 24 2 75 91 Retrieved 20 January 2015 V Grubisic M Orlic 2007 Early Observations of Rotor Clouds by Andrija Mohorovicic Bull Amer Meteor Soc 88 5 693 700 Bibcode 2007BAMS 88 693G doi 10 1175 BAMS 88 5 693 Mohorovicic A 1910 Das Beben vom 8 X 1909 The quake of 8 October 1909 Godisnje izvjesce Zagrebackog meteoroloskog opservatorija za godinu 1909 Jahrbuch des meteorologischen Observatoriums in Zagreb Agram fur das Jahr 1909 Yearbook of the meteorological observatory in Zagreb Agram for the year 1909 in German 1 63 Mohorovicic had observed p 28 that quakes seemed to generate two types of preliminary tremors i e the earliest recorded tremors from a quake one type was detected only by stations that were up to 300 km from the epicenter and other type was detected only by stations that were 700 km from the epicenter After calculating the waves transit times Mohorovicic concluded p 38 that waves from earthquakes were being reflected by a discontinuity which was located approximately 50 km below the Earth s surface Ich entschied mich fur eine abgerundete Tiefe von 50 km I decided on a rounded off depth of 50 km K E Bullen 1985 An Introduction to the Theory of Seismology Press Syndicate of the University of Cambridge ISBN 9780521283892 Discontinuity gfz hr Retrieved 20 January 2015 A Mohorovicic 1916 Die Bestimmung des Epizentrums eines Nahbebens Gerlands Beitrage zur Geophysik Vol 14 pp 199 205 A Mohorovicic 1914 Hodograph der normalen P Wellen fur eine mittlere Herdtiefe Beilage zu den Seismischen Aufzeichnungen Kr Zem Zavod Za Meteorologiju I Geodinamiku Zagreb A Mohorovicic 1914 Hodograph der ersten longitudinalen Wellen eines Bebens emersio undarum primarum Bulletin des travaux de 1 Academie Yougoslave des Sciences et des Beaux arts Classe des sciences mathematiques et naturelles Vol 2 pp 139 157 A Mohorovicic 1917 Principles and construction of a seismograph and a proposal for construction of a new seismograph for recording of horizontal component of ground motion Principi konstrukcije sismografa i prijedlog za konstrukciju nova sismografa za horizontalne komponente gibanja zemlje Rad JAZU Vol 217 pp 114 150 A Mohorovicic 1911 The effects of earthquakes on buildings Djelovanje potresa na zgrade Vijesti HRV Drustva in I arh External links edit nbsp Wikimedia Commons has media related to Andrija Mohorovicic Prominent Istrians Andrija Mohorovicic Andrija Mohorovicic in Croatian Andrija Mohorovicic 1857 1936 in Croatian Archived from the original on 16 March 2007 geofizika journal gfz hr PDF Famous Croats Andrija Mohorovicic 1857 1936 Retrieved from https en wikipedia org w index php title Andrija Mohorovicic amp oldid 1205628559, wikipedia, wiki, book, books, library,

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