T KY Teikoku Daigaku Rika Daigaku Kiy Volume 24

T KY Teikoku Daigaku Rika Daigaku Kiy Volume 24

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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. 1908 edition. Excerpt: ...the amplitude of the conspicuous undulations often exceeds half a meter. On one occasion, about 10 years ago, the amplitude of the abiki was over 2 meters, and a large number of boats and steamers are said to have been damaged. The largest amplitude since the beginning of the tide-gauge observation was 1.54 m at midnight on May 1, 1905. PI. XL1V and XLV are records of the famous abiki together with records of less remarkable undulations. The conspicuous abiki is generally associated with weather in which the isobars in the neighbourhood of the district is much crooked by two coexisting low barometric centres (PI. XCIII--XCIV). It is well known that a tornado is frequently associated with such a distribution of isobars; then it seems very probable that a sudden local disturbance of pressure may often be accompanied with an unstable baromometric distribution. The abiki is often found in apparently calm weather; a deep barometric centre with regular concentric isobars, which is approaching the district, excites short waves of considerable amplitude, but does not cause the abiki in a marked degree. As to mode of oscillation of the bay, two are conceivable. The one is seiches between Fukahori and the end of the bay; the other is the fundamental oscillation having the node at the mouth. The periods calculated on this supposition are 22.6m and 37.5m respectively, closely agreeing with the observed periods; experiment with the model gave also fairly coincident values. (5) Fukahori. Top. 60. PI. XLVI. Fukahori lies near the western mouth of the bay of Nagasaki; here Kelvin's tide-gauge is always working. The undulation is generally inconspicuous; the same periods as those observable at Nagasaki are also traceable. It is interesting to...
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Product details

  • Paperback
  • 189 x 246 x 2mm | 77g
  • United States
  • English
  • black & white illustrations
  • 1236925882
  • 9781236925886