Earthquakes in the Light of the New Seismology |
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Page iii
... it investigates its phenomena by means of instruments which measure force and motions , speeds and acceleration . Its field is within the great department of physics , and is a L part of the branch which treats of elasticity and wave- iii.
... it investigates its phenomena by means of instruments which measure force and motions , speeds and acceleration . Its field is within the great department of physics , and is a L part of the branch which treats of elasticity and wave- iii.
Page iv
... elastic vibration of the air , so , in the view of the new seismology , the earthquake is merely the elastic vibration of the earth - mass . Hence the science be- comes in a great measure the investigation of elastic wave- motion in a ...
... elastic vibration of the air , so , in the view of the new seismology , the earthquake is merely the elastic vibration of the earth - mass . Hence the science be- comes in a great measure the investigation of elastic wave- motion in a ...
Page vi
... elastic waves at all , but of secondary effects of other vibrations . They , too , have long been difficult to explain , and , though attested by overwhelming evidence , are still far from being fully understood . The kinetic elements ...
... elastic waves at all , but of secondary effects of other vibrations . They , too , have long been difficult to explain , and , though attested by overwhelming evidence , are still far from being fully understood . The kinetic elements ...
Page viii
... elasticity to density , it becomes an index of those properties in the materials which compose the earth's in- terior . Chapter XIII is given to the discussion of this aspect of the subject . It includes a table of elasticities and ...
... elasticity to density , it becomes an index of those properties in the materials which compose the earth's in- terior . Chapter XIII is given to the discussion of this aspect of the subject . It includes a table of elasticities and ...
Page xi
... Elasticity of the Earth - Brief Description of the Action Taking Place during a Great Earthquake . CHAPTER II PAGE I CAUSES OF EARTHQUAKES - The Three Views - The Dislocation Theory - The Volcanic Theory -Views of Humboldt and ...
... Elasticity of the Earth - Brief Description of the Action Taking Place during a Great Earthquake . CHAPTER II PAGE I CAUSES OF EARTHQUAKES - The Three Views - The Dislocation Theory - The Volcanic Theory -Views of Humboldt and ...
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Common terms and phrases
acceleration after-shocks alluvia amplitude Arica axis cause centre centrum CHAPITRE Charleston earthquake Charleston Quake coast cracks curves degree density depth dislocation displacement distance district disturbance downthrow earth earth-mass earthquakes elastic energy epicentre epicentrum epifocal eruption estimates fact felt force frequency greater ground Hooke's law Horizontal Pendulum hundred increases indicate inferred instruments intensity investigation Japan kilometres kilometres per second Krakatoa less lever mass means measure miles Milne's minutes Montessus movement normal wave number of quakes observed occur ocean Omori origin oscillation particle period phase portion preliminary tremor Professor Milne proportional ratio records ribbon Robert Mallet rocks Rossi-Forel scale sea-waves seaquakes Seismes seismic seismic regions seismograph Seismological seismometer shaken shock speed of propagation square square kilometres steady-point surface syzygies tectonic tilting tion Tokio Totaux trace transverse wave velocity vertical motion Vertical Pendulum vibrations Vicentini volcanic volcanic action
Popular passages
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Page 312 - The Basis of Social Relations. A Study in Ethnic Psychology. By DANIEL G. BRINTON, AM, MD, LL.D., Sc.D., Late Professor of American Archaeology and Linguistics in the University of Pennsylvania ; Author of " History of Primitive Religions," "Races and Peoples," " The American Race,
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Page 313 - The following volumes are in preparation : Meteors and Comets. By Professor CA YOUNG, Princeton University. The Measurement of the Earth. By Professor CT MENDENHALL, Worcester Polytechnic Institute, formerly Superintendent of the US Coast and Geodetic Survey. Earthquakes. By Major CE DUTTON, USA The History of Science.
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Page 167 - Overthrow of movable objects; fall of plaster; ringing of church bells; general panic, without damage to buildings.
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Page 167 - Microseismic shock: recorded by a single seismograph or by seismographs of the same model, but not by several seismographs of different kinds ; the shock felt by an experienced observer.