Earthquakes in the Light of the New Seismology |
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Page iv
... used for analysing earthquake motion and re- cording it in conjunction with a time scale . By means of these instruments it became possible to inaugurate an en- tirely new series of investigations of the nature of earth- iv PREFACE.
... used for analysing earthquake motion and re- cording it in conjunction with a time scale . By means of these instruments it became possible to inaugurate an en- tirely new series of investigations of the nature of earth- iv PREFACE.
Page vii
... scales with an absolute scale of intensity , or accelerations . The chapter on variations of intensity points out the method of computing the depth of origin of an earthquake whenever observations sufficient in number and accuracy can ...
... scales with an absolute scale of intensity , or accelerations . The chapter on variations of intensity points out the method of computing the depth of origin of an earthquake whenever observations sufficient in number and accuracy can ...
Page xiv
... Scale - The Mercalli Scale - The Utility of these Scales - Checks upon Gross Errors of Esti- mate - Isoseismals - Estimates of Focal Depths -Holden's Attempt to Find Mechanical Equivalents of the Sensual Estimates by the Rossi - Forel ...
... Scale - The Mercalli Scale - The Utility of these Scales - Checks upon Gross Errors of Esti- mate - Isoseismals - Estimates of Focal Depths -Holden's Attempt to Find Mechanical Equivalents of the Sensual Estimates by the Rossi - Forel ...
Page xix
... Scale VII . Seismograms ΙΟ 56 62 94 96 176 220 VIII . Seismograms of the Great Assam Quake Taken at the Rocco di Papa Observatory near Rome 234 IX . Sketch Map of the Distribution of Earthquakes in Japan during 1885-1892 , by Charles ...
... Scale VII . Seismograms ΙΟ 56 62 94 96 176 220 VIII . Seismograms of the Great Assam Quake Taken at the Rocco di Papa Observatory near Rome 234 IX . Sketch Map of the Distribution of Earthquakes in Japan during 1885-1892 , by Charles ...
Page 9
... mere matter of convenience . Modern research has assumed that below the scale of un- aided sensibility the earth is pervaded with almost constant minute tremors . What portion of them represents the un- NATURE AND DEFINITIONS 9.
... mere matter of convenience . Modern research has assumed that below the scale of un- aided sensibility the earth is pervaded with almost constant minute tremors . What portion of them represents the un- NATURE AND DEFINITIONS 9.
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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
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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.