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Topic: Andrija Mohorovicic

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	Mohorovicic Discontinuity - The Moho - GEOLOGY.COM
		The Mohorovicic Discontinuity, or "Moho", is the boundary between the crust and the mantle.
		Mohorovicic realized that the velocity of seismic waves is related to the density of the material that they are travelling through.
		Through careful calculations Mohorovicic determined that the basaltic oceanic crust and the granitic continental crust are underlain by an olivine-rich mantle rock such as peridotite.
	geology.com /articles/mohorovicic-discontinuity.shtml (470 words)

	Historical Data - IGCP Project 474 - Images of the Earth's Crust & Upper Mantle
		The boundary between the Earth's crust and the underlying upper mantle is now recognised by a significant increase in the velocity of seismic P-waves at depths between 15 and 50 km depth.
		Andrija Mohorovicic was born on 23 January 1857 in Volosko, a coastal Istrian village near Opatija, where his father, also named Andrija, was a flsmith making anchors.
		Mohorovicic retired at the end of 1921, and died on December 18, 1936.
	www.earthscrust.org /earthscrust/science/historic/andriji.html (894 words)

	Earthquake Hazards Program: The Men and Women of Seismology: Andrija Mohorovicic (Site not responding. Last check: 2007-10-14)
		Andrija Mohorovicic was a prominent Croatian scientist in the field of meteorology and seismology at the end of the nineteenth and in the early twentieth century.
		Mohorovicic showed interest in extraordinary meteorological phenomena like the tornado near Novska in 1892, and the vijor (whirlwind) near bazma in 1898.
		Mohorovicic's thoughts and ideas were truly visionary and came to expression many years later (the effects of earthquakes on buildings, harnessing the energy of the bura, models of the Earth, deep-focus earthquakes, hail defence, locating earthquake epicentres, seismographs, etc.).
	wwwneic.cr.usgs.gov /neis/seismology/people/mohorovicic.html (838 words)

	Andrija Mohorovicic
		The boundary separating Earth's crust from its upper mantle is called the Mohorovicic discontinuity, or the Moho, for short, in honor of the Croatian seismologist Andrija Mohorovicic.
		Mohorovicic published a paper in 1909 on the effect of earthquakes on buildings that described periods of oscillation (see lesson 4.3).
		Mohorovicic, like Alfred Wegener, received the honor of having his name given to a crater on the dark side of the moon.
	tremor.nmt.edu /activities/pioneers/dlMoho_32.htm (655 words)

	1.2 Andrija Mohorovicic: A pioneer of atmospheric rotor research? (2007 - 87ANNUAL_5history) (Site not responding. Last check: 2007-10-14)
		Andrija Mohorovicic, the father of Croatian geophysical research, is widely known as the discoverer of discontinuity between the Earth's crust and mantle.
		Presented will be an overview of Mohorovicic's research technique and rotor-related contributions from the end of the 19th century, review of the contemporaneous research on the subject, and research on this topic in the 1920's and 1930's, considered to be the seminal work on the subject of atmospheric rotors to date.
		Mohorovicic's discovery is discussed in the context of the Terrain-induced Rotor Experiment (T-REX), the recently completed international field experiment and research effort focused on the study of atmospheric terrain-induced rotors.
	ams.confex.com /ams/87ANNUAL/techprogram/paper_119668.htm (168 words)

	Scientist Profiles/Andrija Mohorovicic (Site not responding. Last check: 2007-10-14)
		Andrija Mohorovicic, born in 1857, was a scientist from Croatia who worked in the fields of meteorology and seismology.
		In his early years, Mohorovicic became head of the meteorological Observatory in Zagreb and established a number of stations to study thunderstorms, tornadoes and other weather phenomena.
		In his later years, Mohorovicic turned his thoughts and ideas to the effects of earthquakes, and showed how the seismic waves of earthquakes spread through the Earth.
	www.sciencetrek.net /mohorovicic.htm (103 words)

	Geofizički odsjek PMF-a
		Andrija Mohorovičić was a prominent Croatian scientist in the field of seismology and meteorology at the end of the nineteenth and in the early twentieth century.
		In 1891 he was transferred to the secondary school in Zagreb at his own request, and on 1 January 1892 became the director of the Meteorological Observatory.
		In 1893 Andrija Mohorovičić was awarded the doctorate of philosophy at the Zagreb University.
	www.gfz.hr /seizmologija/moho.php (1555 words)

	Andrija Mohorovičić - Wikipedia, the free encyclopedia
		Andrija Mohorovičić (January 23, 1857 – December 18, 1936) was a notable Croatian meteorologist and seismologist born in Volosko near Opatija, where his father, also named Andrija, was a flsmith making anchors.
		In 1996, asteroid 8422 Mohorovičić with a period of 5 years and 38 days was also named after him.
		Andrija Mohorovičić (1857-1936) at the Croatian Giants of Science - in Croatian
	en.wikipedia.org /wiki/Andrija_Mohorovicic (798 words)

	Learn more about Mohorovicic discontinuity in the online encyclopedia. (Site not responding. Last check: 2007-10-14)
		The Mohorovicic discontinuity, sometimes abbreviated to the 'M' discontinuity or the 'Moho', is the boundary between the earth's crust and the mantle.
		The Mohorovicic discontinuity was first identified in 1909 by Andrija Mohorovicic by the abrupt increase in the velocity of earthquake waves at this point.
		The location of the Mohorovicic discontinuity varies between about 5 kilometres beneath the mid-oceanic ridges to approximately 75 kilometres beneath continents.
	www.onlineencyclopedia.org /m/mo/mohorovicic_discontinuity.html (192 words)

	Mohorovicic Discontinuity (Moho) \| World of Earth Science
		The Moho is named after Andrija Mohorovicic (1857–1936), a Croatian meteorologist and seismologist who was fascinated with the faults and movements in the earth's infrastructure that result in earthquakes.
		Because the second set of waves exactly mirrored the first set, Mohorovicic discovered that the additional set was actually the first bouncing back from a resistant surface, or a layer of different material inside the earth.
		Mohorovicic also noticed from these experiments that the waves, or tremors, traveled at different speeds depending on the thickness of the material inside Earth.
	www.bookrags.com /research/mohorovicic-discontinuity-moho-woes-02 (547 words)

	Istria on the Internet - Prominent Istrians - Andrija Mohorovicic
		The boundary is between 25 and 60 km deep beneath the continents and between 5 and 8 km deep beneath the ocean floor.
		On the heels of Andrija's discovery, scientists confirmed the existence of this discontinuity under all the continents and oceans.
		He retired at the end of 1921, and died on December 18, 1936 and was buried at the Mirogoj Cemetery in Zagreb.
	www.istrianet.org /istria/illustri/mohorovicic (1153 words)

	Andrija Mohorovicic Birthday
		Andrija Mohorovicic, a famous seismologist, was born on January 23, 1857.
		Andrija attended local schools until his university studies in mathematics and physics began in 1875 at the Faculty of Philosophy in Prague.
		This boundary became known as the Mohorovicic Discontinuity, shortened to the Moho, and it marks the bottom of the earth’s crust.
	web.visionlearning.com /events/AMohorovicic_Jan23_2005.htm (495 words)

	Geophysics Lab 03
		Andrija Mohorovicic's detailed analysis of an earthquake that struck the former Yugoslavia on 10 October 1909 led to his discovery of a significant seismic discontinuity (a 'boundary' across which seismic velocities vary significantly).
		Mohorovicic's analysis stands as a classical example of a seismic refraction experiment wherein analysis of travel-time vs. distance curves led to discovery of a fundamental aspect of Earth's layered internal structure.
		One is a paper that excerpts the important aspects of Mohorovicic's original work and the other paper is composed of notes on this topic taken from Dr. Seth Stein's course, Earth's Interior, at Northwestern University.
	comp.uark.edu /~sboss/geophyxlab04b.htm (1074 words)

	Mohorovicic (Site not responding. Last check: 2007-10-14)
		Mohorovicic was at first active as the meteorologist, but at the turn of the centuries his scientific interest turns exclusively to seismology.
		Studying the seismograms of the earthquake that occurred on 8 October 1909 in the Pokupsko region (Croatia), Mohorovicic was able to prove the existence of the boundary layer — Mohorovicic discontinuity — between the Earth's crust and the mantle, thus establishing himself as one of the greatest and most renowned scientists of all times.
		Mohorovicic's other contributions are also important (Mohorovicic's epicentrals, Mohorovicic's seismograph, Mohorovicic's travel-time curves (hodochrones)).
	www.geomatics.ucalgary.ca /~sneeuw/hall_of_fame/seiten_e/mohorovicic.html (199 words)

	Seismic Tomography (Site not responding. Last check: 2007-10-14)
		In 1909, Andrija Mohorovicic analysed the records of an earthquake in Croatia.
		Mohorovicic identified that Pg and Pn travelled at a speed of 5.4 and 7.9 km.s
		Andrija Mohorovicic had just discovered the the existence of the mantle underneath the continental crust.
	www.geosci.usyd.edu.au /users/prey/Teaching/Geol-2001GPHS/Stomo/Sld29.html (256 words)

	[No title]
		It was the study of this movement, by Mohorovicic, Lehmann, and others, that developed our current understanding of the interior of the Earth.
		Even after earthquakes became one of his primary interests, as chief of the observatory, Mohorovicic was responsible for recording all the meteorological data for Croatia and Slovenia— precipitation, tornadoes, whirlwinds, thunderstorms, and more— with only an occasional assistant.
		His only grandchild, Andre, remembers that he was always good natured—a kind and peaceful man. Mohorovicic, like Alfred Wegener, received the honor of having his name given to a crater on the dark side of the moon.
	www.fema.gov /plan/prevent/earthquake/txt/fema-253-unit3a.txt (8189 words)

	ANDRIJA MOHOROVI^I] (1857 - 1936) (Site not responding. Last check: 2007-10-14)
		Andrija Mohorovièiæ istaknuti je hrvatski znanstveni radnik na podruèju meteorologije i seizmologije, s kraja 19.
		ANDRIJA MOHOROVIÈIÆ, UTEMELJENJE SLUŽBE TOÈNOG VREMENA, Beè, kraj 19.
		Andrija Mohorovièiæ na osnovi seizmograma pokupskog potresa od 8.
	jagor.srce.hr /zuh/velikani/mohorovk.htm (2807 words)

	Digging a Hole in the Ocean: Project Mohole, 1958-1966
		Project Mohole was an attempt to retrieve a sample of material from the earth's mantle by drilling a hole through the earth's crust to the Mohorovicic Discontinuity, or Moho.
		In addition, evidence drawn from the Moho could be brought to bear on the question of continental drift, which at the time was still controversial.
		The Mohorovicic Discontinuity marks the boundary between the earth's crust and mantle.
	www.nas.edu /history/mohole (572 words)

	EUGEN 2005 Croatia - European geology student network (Site not responding. Last check: 2007-10-14)
		It was named after the great Croatian geophysicist Andrija Mohorovicic (born in Volosko, 1857-1936), professor at the University of Zagreb.
		Professor Mohorovicic died in 1936 in circumstances approaching poverty.
		The name of Rudjer Boskovic was given to a mountain on the visible side, and the name of A. Mohorovicic to a mountain on the dark side of the Moon.
	www.eugen2005.com /interest_1.php (332 words)

	Volcano Dictionary: M - EnchantedLearning.com
		Andrija Mohorovicic (1857 - 1936) was a Yugoslavian geophysicist.
		After examining seismic waves from the 1909 Kulpa Valley earthquake, Mohorovicic theorized that a boundary between the Earth's crust and the upper mantle existed (about 50 km beneath the surface) in which the speed of earthquake waves became very rapid.
		The Mohorovicic discontinuity separates the crust and the upper mantle of the Earth.
	www.enchantedlearning.com /subjects/volcano/glossary/indexm.shtml (769 words)

	History of Croatian Science
		Stjepan Mohorovicic (1880-1980), professor of physics at a grammar school in Zagreb, made a very important theoretical discovery of the positronium (rotational pair of electron and positron) as early as in 1936, published in `Astronomishe Nachrichten', a prestigeous German scientific journal.
		Still earlier, in 1927, Stjepan Mohorovicic predicted the existence of the MOHO-layer on the Moon, analogous to that of the Earth, discovered by his father Andrija Mohorovicic.
		Andrija Stampar (1888-1958) was our leading authority in the field of epidemiology and a pioneer in preventive medicine.
	www.hr /darko/etf/et22.html (13029 words)

	Content #1 (Earth layers) (Site not responding. Last check: 2007-10-14)
		Earthquake waves that reach this layer move at the greatest speeds because waves move through solids faster than through gases and liquids.
		To honor Mohorovicic, scientists have named the boundary between the crust and the mantle the Mohorovicic discontinuity or the "MOHO" for short.
		How did Andrija Mohorovicic discover that the Earth's crust was made of less dense rock than the mantle.
	volcano.und.nodak.edu /vwdocs/vwlessons/lessons/Ch1CMB/Content1.html (356 words)

	Lecture 07 (Site not responding. Last check: 2007-10-14)
		Mapping the base of the crust: Andrija Mohorovicic
		Andrija Mohorovicic, of Croatia, noticed that seismic waves that arrive at a seismic station
		Andrija concluded that the faster waves took a faster path beneath the crust, in the mantle
	quakeinfo.ucsd.edu /~hedlin/erth10/Lecture07.html (701 words)

	Drilling Vessel Recovers Rocks From Earth's Crust Far Below Seafloor
		Also termed the Mohorovicic' discontinuity after the Croatian seismologist Andrija Mohorovicic' (1857-1936) who discovered it.
		Scientists affiliated with the Integrated Ocean Drilling Program (IODP) and seeking the elusive "Moho" - the boundary, which geologists refer to as the Mohorovicic discontinuity, between Earth's brittle outer crust and its hotter, softer mantle - have created the third deepest hole ever drilled into the ocean bottom's crust.
		Scientists had hoped to drill into Earth's mantle, but found instead that their efforts had missed the mark, they now believe by less than 1,000 feet.
	www.spacedaily.com /news/earth-05i.html (742 words)

	The Interior of the Earth
		The crust is much thinner under the oceans than under continents (see figure above).
		The boundary between the crust and mantle is called the Mohorovicic discontinuity (or Moho); it is named in honor of the man who discovered it, the Croatian scientist Andrija Mohorovicic.
		No one has ever seen this boundary, but it can be detected by a sharp increase downward in the speed of earthquake waves there.
	pubs.usgs.gov /gip/interior (1545 words)

	Scientists
		Image Search on Google - select images that will enhance your project by clicking on the thumbnail images from 16 pages of links.
		Prominent Istrians: Andrija Mohorovicic - text and images about the man and his contributions.
		Image Search on Google - select images that will enhance your project by clicking on the thumbnail images.
	www.westirondequoit.org /ihs/library/Scientists.htm (1610 words)

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