A study on the force of ocean waves upon a vertical breakwater

A study on the force of ocean waves upon a vertical breakwater

908 F. General 14. Engineering and industry OLR(1980)27(12) earthquakes, but additional design aspects need to be investigated. Brian Watt Associa...

93KB Sizes 1 Downloads 71 Views

908

F. General

14. Engineering and industry

OLR(1980)27(12)

earthquakes, but additional design aspects need to be investigated. Brian Watt Associates, Inc. (kmk)

80:6180

Crawford, Diane and R. R. Witt Jr., 1980. [I)cepwater drilling.] Offshore, 40(6): 45-79; 3 papers. Comprehensive and up-to-date, these 3 papers detail the current state of deepwater drilling technology stressing major advancements and new capabilities including plans for Glornar Explorer to drill at record depths, A survey of deepwater wells drilled 1974-1980 is reported. (izs) 80:6181

Huang, Peiji, Keji Yang, Changwu Lu and Laichen Liu, 1979. A study on the force of ocean waves upon a vertical breakwater. (In Chinese; English abstract.) Acta oceanol, sin., l(2): 311-322. Linear theory and statistical analysis of water level elevations and wave pressures led to development of a technique to calculate the 'spectrum of total pressure exerted on the vertical breakwater from the spectrum of incident waves.' Slight further calculation gives crucial coastal engineering design statistics; comparison with measurements shows reasonable a g r e e m e n t . First I n s t i t u t e of Oceanography, National Bureau of Oceanography, People's Republic of China. (sir) 80:6182

Kelly, John Jr., Paul Wells, G. W. Perry and S. K. Wilkie, 1980. How truing oil mud solved North Sea drilling problems. J. Petrol. Technol., 32(6): 931-940. A review of drilling records occasioned by timeconsuming complications during offshore exploration of the North Sea showed that hole enlargement was the main cause of the problems experienced. It was subsequently determined oil muds could solve many of the hole enlargement problems and reduce drilling costs. Mobil Research and Development Corp. (hbf) 80:6183

Watt, B. J., I. B. Boaz, J. A. Ruhl, S. A. Shipley, D. J. Dowrick and Amitava Ghose, 1980. Earthquake survivability of concrete platforms. J. Petrol. Technol., 32(6): 1090-1104.

The survivability of concrete gravity platforms was modeled, using nonlinear dynamic analysis, under conditions associated with intense earthquakes. Structure, foundation, and e a r t h q u a k e characteristics were varied for 15 cases to quantify the extent of damage. Data suggest that Gulf of Alaska platforms could withstand high magnitude

15. History and contemporary development of oceanography and related sciences 80:6184

Abelson, P. H., 1980. Scientific communication. Science, 209(4452): 60-62. Verbal communication can, among experts familiar with each other's work, reduce 'the essence of a year's work and the product of a month's labored composition' to a message transferable in a few moments. On the other hand, a verbal message once or twice removed (let alone ten or twenty times removed) can become noisy and distorted beyond repair--as those who ever played 'Telephone' know. Thus publication is required to preserve the original record, to enforce rigor (by allowing scrutiny), and for a dozen other reasons discussed here. Its future, however, is likely to be electronic. (fcs) 80:6185

Abelson, P. H. and Ruth Kulstad, eds., 1980. Science Centennial: 3 July 1880 to 4 July 1980. Science, 209(4452): 1-202; 25 papers.

Science magazine celebrates its centennial by looking back and looking forward. There are messages by K. E. Boulding, F. Mosteller, and W. D. Carey. And there are sections devoted to historical perspectives on science; the present and future of science: astronomy, sociology, biology, chemistry, mathematics, physics, planetary science, medicine, engineering, industrial and operations research; and finally, the interactions of science and technology with society: population, food, nutrition, energy, environment and information. There were no papers on conflict resolution or disarmament, but, to paraphrase Boulding, if Science is to celebrate its bicentennial, there will have been much research in these areas. (fcs) 80:6186

De Witt, Stetten Jr., 1980. Research in a nogrowth e c o n o m y - - c a n excellence be preserved? Perspect. Biol. Med., 23(3): 357-369.

In constant dollars, the research budget has not increased for more than ten years. In the future it is likely to decrease. More is called for than shopping carefully or cutting the travel budget. One stark implication: on average, a Ph,D. should reproduce