Earthquakes in the Light of the New Seismology |
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Page xiv
... Curves as Dependent upon Focal Depth - Earthquakes with Deep Foci Compared with those of Shallow Foci - Maximum Focal Depths - Probably Never Greater than Fifteen Mile . CHAPTER XI SPEED OF PROPAGATION OF EARTH - WAVES . Importance of ...
... Curves as Dependent upon Focal Depth - Earthquakes with Deep Foci Compared with those of Shallow Foci - Maximum Focal Depths - Probably Never Greater than Fifteen Mile . CHAPTER XI SPEED OF PROPAGATION OF EARTH - WAVES . Importance of ...
Page xxi
... Curves Showing the Number of After- Shocks of the Mino - Owari Quake in the Ten Months Following the Catastrophe 6. J. Schmidt's Chart of Epicentres and Outer Limits of Sensibility of the Quakes of the Eastern Mediter- ranean from 1846 ...
... Curves Showing the Number of After- Shocks of the Mino - Owari Quake in the Ten Months Following the Catastrophe 6. J. Schmidt's Chart of Epicentres and Outer Limits of Sensibility of the Quakes of the Eastern Mediter- ranean from 1846 ...
Page 4
... curve around the epicentrum , more or less irregular in shape , ofter . a deformed ellipse , sometimes , though seldom , roughly ap- proaching a circle . Such lines are termed isoseismals . The action being most violent in the near ...
... curve around the epicentrum , more or less irregular in shape , ofter . a deformed ellipse , sometimes , though seldom , roughly ap- proaching a circle . Such lines are termed isoseismals . The action being most violent in the near ...
Page 5
... curves drawn through such points are called coseismals . When the scientific study of earthquakes began , much was hoped from the use of them , but the hopes have not been realised . A great number of time observations is necessary in ...
... curves drawn through such points are called coseismals . When the scientific study of earthquakes began , much was hoped from the use of them , but the hopes have not been realised . A great number of time observations is necessary in ...
Page 58
... curve , and the included area is not far from six thousand square miles . Over the whole of that area the intensity was above No. X of the Rossi Forel scale , or greater than the intensity which prevailed in the city of Charleston ...
... curve , and the included area is not far from six thousand square miles . Over the whole of that area the intensity was above No. X of the Rossi Forel scale , or greater than the intensity which prevailed in the city of Charleston ...
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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 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.