List of Recorded Earthquakes1887 |
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a. m. Heavy shock a. m. Sharp shock Alta Angeles April August Bainbridge Island Cal.-FUCHS Cal.-PERREY chimneys thrown County.-B cracked damage December 21 distinct shocks Dry Season earth earthquake in California Equinox February feet fissure FUCHS Gilroy Grass Valley Inyo County July June Lake Lick Observatory light shock March 26 miles Mining and Scientific minutes Mission San moderate shock Napa November 22 November 26 Oakland October 21 Oregon p. m. San Francisco p. m. Severe shock p. m. Slight shock p. m. Two shocks PERREY Petaluma Rainy Season Report ROSSI-FOREL SCALE S. F. Bulletin Sacramento Union Salinas San Fran San Francisco San José San Juan San Luis Obispo Santa Barbara Santa Clara Santa Cruz Scientific Press September September 26 shock at San shock felt shock in S. F. shock was felt shocks were felt Sierra County Smart shock Solstice Stockton Strong shock Tejon Three shocks tremblements de terre Visalia
Популярні уривки
Сторінка 8 - I. Microseismic shock — recorded by a single seismograph, or by seismographs of the same model, but not putting seismographs of different patterns in motion; reported by experienced observers only. II. Shock recorded by several seismographs of different patterns; reported by a small number of persons who are at rest. A very light shock.
Сторінка 8 - VIII. Fall of chimneys; cracks in the walls of buildings. IX. Partial or total destruction of some buildings. X. Great disasters; overturning of rocks; fissures in the surface of the earth; mountain slides.
Сторінка 49 - Ms. 1873. November 22; a little after 9 pm; VIII. A shock was felt from Portland, Oregon, to San Francisco, Cal.; most severe at Crescent City, Cal., and Port Orford, Oregon. — CGR Nearly every brick building in Crescent City was injured; chimneys were damaged there and up the coast to Port Orford, in the interior as far as Jacksonville, Oregon, and east from Crescent as far as Happy Camp, on the Klamath. — B. Ms. At sea, N. of Cape Mendocino.— CGR— Tacoma (III).— P.
Сторінка 10 - The shocks continued almost daily for many months. The first shock threw down a portion of Chimney Peak and opened fissures and cracks in the clay desert bordering the Colorado. A small mud volcano was found in an active state about forty miles southwest of the post. Report of Exp. for Pacific Railroad.
Сторінка 10 - ... as to the direction in which it was moving, the facts upon which this impression was based, and whether people agreed as to the direction. 7. Which number on the Rossi-Forel scale of earthquake intensity best expresses the intensity of the shock in your vicinity ? 8. Give, also, any further particulars of interest, whether they are from observation or from hearsay. If a chandelier was noticed to swing, describe it, and state the direction and amount of swing. If pictures swung, state direction...
Сторінка 7 - I think there is no authority for such a statement." HH В., vol. 14, p. 377. A new Mission church had been contemplated in 1818. It is said that the old church was so badly injured by an earthquake in 1822 that it was best to take it down; and that a new church (now standing) was built in 1825-6. "For various reasons (which are given) I suppose nothing of the kind to have occurred. As a mere conjecture, it may be that after the church was completed, or nearly so, in 1818 it was damaged by an earthquake,...
Сторінка 8 - The shocks of one hundred and twenty earthquakes were felt during two successive months of ... summer. The average, however, of two earthquakes a day is not so frightful as it looks, the shocks being seldom severe, and often so slight as to escape the notice of the uninitiated stranger."— Simpson's Journey Round the World, vol.
Сторінка 5 - There were shocks of earthquake from the llth to the 31st of October, sometimes six in a day, the most severe on the 18th. Friars were so terrified that they spent the nights out of doors in the mission carts. Several cracks appeared in the ground, one of considerable extent and depth on the banks of the Pajaro, and the adobe walls of all the buildings were cracked from top to bottom, and threatened to fall.
Сторінка 9 - Great disasters; overturning of rocks; fissures in the surface of the earth; mountain slides. The information can be very conveniently given by answering the following questions, which are copied from a circular prepared by Captain CE Dutton, USA, for the US Geological Survey: "1. Post Office address; town, county, and State. 2. Place and date of observation. 3. Name and address of the observer, if other than the writer. 4. Position and occupation of observer at time of the shock, and character of...
Сторінка 3 - ... last one hundred years. On the hypothesis that earthquakes are the results of natural laws, which operate with some degree of regularity, it may be fairly presumed that a period of one hundred years would, in all probability, give the extreme limit of the result of the action of these laws. Hence, having learned from reliable history and from observation the maximum strength of earthquakes occurring in California during a century past, we may, from these data, with some degree of confidence predict...