Bulletin Volume 1, Nos. 1-4

Bulletin Volume 1, Nos. 1-4

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This historic book may have numerous typos and missing text. Purchasers can usually download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1907 edition. Excerpt: ...being a=0.06 mm., toward S. For the first 1"' 1', the motion was small: --T: 5.1 sec., 2: =0.0(3 mm. PL. XXII Fig. 1. Aleutian Islands and the Surrounding Seas. Fig. 2. Showing the Depth of Water ofl the west Co"; of g_ Amerim_ In Figs. 1 and 2, the earthquake origins are in each case indicated by a. short thick line. Lines marked 0, 1, 2, 7 are the lines of equal depth of 200, 1000, 2000. and 7000 men-an respectively Fig. 8. Map showing the Approximate Positions of the different Great Earthquakes which took place along the West Coaat of America. T= 20.3 sec., 2a=O. 14 mm. Then the motion became larger, the two first movements being as follows: --(i) a=O.24 mm, toward S. l(ii) 2cents=0.as, N. The T in the subsequent part was 7.9 sec., there being also some small vibrations of T=3.9 sec., T=18.4 sec. Principal Portion. For the first 1"'/110', the motion was small comparatively and had a period of 'l'=30.7 sec., the three initial At the end of this epoch there took place a vibration consisting of the two following displacements: --I'he next motion was still greater and the pointer went out of the smoked paper, toward N. Later on the pointer again entered on the smoked paper, the vibrations in the end portion of the Chilian earthquake being as follows: --5. Observafions at Osaka Meteorological Observatory. (i) EW Component. Fig.4, P1. XXIII. The record was taken by an Omori Horizontal Pendulum Apparatus of portable form, whose instrumental constants are as follows: --Vertical distance between the points of suspension and of support =86 cm. Length of the horizontal strut=44 cm. Weight of the heavy b0b=l6 kgm. Period of the free oscillation=27 sec. Multiplication of the pointer=20 times. Preliminarshow more

Product details

  • Paperback
  • 189 x 246 x 2mm | 86g
  • Rarebooksclub.com
  • United States
  • English
  • black & white illustrations
  • 1236901525
  • 9781236901521