Bulletin of the Seismological Society of America, Том 1Seismological Society of America, 1911 |
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A. C. LAWSON amplitude Association Berkeley Bldg Bosch-Omori BULLETIN BURCKHALTER California earthquake cause Central Bureau Charleston earthquake Chile Coast College Costa Rica cracks damage direction Director displacement distance disturbance earth Earthquake of July effects epicenter feeble shock feet felt Galitzin Geological H. F. REID HARRY FIELDING REID horizontal intensity International Seismological investigations isoseismal J. B. WOODWORTH J. C. BRANNER Klotz Library Lick Observatory LOUDERBACK Mexico microseismic miles Minillas motion Mount Hamilton mountains movements observations Observatory occurred origin Palo Alto pendulum Permanent Committee phenomena preliminary tremors President Prof Professor quake records region reports rock Rossi-Forel scale S. D. TOWNLEY San Francisco San Jose Santa Clara Santiago scarps scientific Secretary seismic seismographs Seismological Service Seismological Society seismological stations shocks recorded Society of America Socorro Stanford University strong shock surface Survey tion U. S. Naval Observatory vertical vibrations volcanic Washington waves Wiechert 80 Wiechert hor
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Сторінка 54 - 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.
Сторінка 156 - General awakening of those asleep ; general ringing of house bells ; oscillation of chandeliers ; stopping of pendulum clocks ; visible agitation of trees and shrubs ; some startled persons leave their dwellings. VII. Strong shock : Overthrow of movable objects ; fall of plaster ; ringing of church bells ; general panic, without damage to buildings. VIII. Very strong shock : Fall of chimneys ; cracks in walls of buildings. IX. Extremely strong shock : Partial or total destruction of some buildings....
Сторінка 30 - Fairly strong shock: general awakening of those asleep, general ringing of bells; oscillation of chandeliers; stopping of clocks; visible agitation of trees and shrubs; some startled persons leave their dwellings.
Сторінка 30 - Recorded by a single seismograph, or by some seismographs of the same model, but not by several seismographs of different kinds ; the shock felt by an experienced observer.
Сторінка 32 - Colma group approached the fault from the west side, the apparent amount being ii meter (3-6 feet). During the earthquake of 1906 the displacements on each side of the fault were less the greater the distance of the displaced points from the fault. On the eastern side of the fault, ten points at an average distance of 1.5 kilometers (0.9 mile) from the fault have an average displacement of 1.54 meters (5.1 feet), three points at an average distance of...
Сторінка 91 - Paul's bay (about 50 miles below Quebec on the north side), a mountain about a quarter of a league in circumference, situated on the shore of the St. Lawrence, was precipitated into the river, but, as if it had only made a plunge, it rose from the bottom and became a small island, forming with the shore a convenient harbour, well sheltered from all winds.
Сторінка 96 - Recorded by several seismographs ol different kinds ; felt by a small number of persons at rest. III. Very feeble shock : Felt by several persons at rest ; strong enough for the direction or duration to be appreciable. IV. Feeble shock : Felt by persons in motion ; disturbances of movable objects, doors, windows ; creaking of ceilings. V. Shock of moderate intensity : Felt generally by every one ; disturbance of furniture, beds, &c.
Сторінка 54 - General awakening of those asleep; general ringing of bells; oscillation of chandeliers; stopping of clocks; visible agitation of trees and shrubs; some startled persons leaving their dwellings. VII. Strong shock. — Overthrow of movable objects; fall of plaster; ringing of church bells; general panic; without damage to buildings. VIII. Very strong shock. Fall of chimneys; cracks in the walls of buildings. IX. Extremely strong shock. — Partial or total destruction of some buildings. X. Shock of...
Сторінка 1 - In the present state of public opinion in California for example, it is practically impossible to secure state aid for the study of earthquakes. The commercial spirit of the people fears any discussion of earthquakes for the same reason as it taboos any mention of an occurrence of the plague in the city of San Francisco. It believes that such discussion will advertise California as an earthquake region and so hurt business
Сторінка 102 - ... sign. The effective force tending to produce movement would be the arithmetical sum of the normals or of a single resultant compounded of the two normals. From this construction we may derive a force which tends to push the loaded sea bottoms inward upon the unloaded land horizontally. This gives us a force of the precise kind that is wanted to explain the origin of systematic plications. Long reflection and considerable analysis have satisfied me that it is sufficient both in intensity and in...