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Jensen, O.J. (author), Sorensen, T. (author)Rubble mOlJnd breakwaters have been used for centuries for the protection of harbours. In many cases breakwaters were built in relatively deep water and exposed to waves too severe in relation to the size of rock used for construction. Furthermore, they were often built with a steep slope, and consequently, severe damage occurred. In some cases,...report 1989
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Verhagen, H.J. (author), Volker, W.F. (author)The most urbanized part of the Netherlands is situated below sea level and is protected by dikes. By act of parliament allowable inundation frequencies for each part of the country are fixed. In case of two dangers (river run-off and storm surge) it is a problem to determine design values for dikes. Guidelines are developed to solve these...conference paper 1989
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Allsop, N.W.H. (author), Latham, J.P. (author)This paper identifies the need for quantitative durability testing of rock for use on dynamically stable rock armoured slopes. The derivation and use of a suite of engineering tests for rock quality is considered, and the limitations of Simple accept/reject criteria discussed. Recent developments in techniques for the quantification of armour...report 1989
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- Stive, M.J.F. (author), Roelvink, J.A. (author) conference paper 1989
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Burcharth, H.F. (author), Frigaard, P. (author)The stability of a berm type breakwater (sacrificial breakwater) was tested in a 3-dimensional model at rhe Hydraulics Laboratory, Department of civil Engineering, university of Aalborg. The object was to study the stability/erosion of the breakwater head and the trunk, the latter exposed to both head-on and oblique irregular waves. To avoid too...report 1989
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Mansard, E.P.D. (author)In the last fifteen years the techniques of wave generation 'have advanced to a great extent that it is row possible to exercise controls, on parameters such as wave grouping, wave asymmetries. etc .. , during the simulation process.. This paper describes some of these techniques that were developed at the National Research Council of Canada,...report 1988
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- Rots, J.G. (author), De Borst, R. (author) journal article 1987
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- Mier, J.G.M. (author), De Borst, R. (author) journal article 1986
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Battjes, J.A. (author), Janssen, J.P.F.M. (author)A description is given of a model developed for the prediction of the dissipation of energy in random waves breaking on a beach. The dissipation rate per breaking wave is estimated from that in a bore of corresponding height, while the probability of occurrence of breaking waves is estimated on the basis of a wave height distribution with an...conference paper 1978
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O'Brien, M.P. (author)Classical paper on the relation between the flow area of a tidal inlet and the tidal prism of that inletreport 1969
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Laird, A.D.K. (author)The maintenance of pole, stake, and pile structures in streams and waves has been important to man from antiquity. Because of the common occurrence of the flow of a fluid past a cylinder, and the simplicity of the boundaries, one might expect that long ago all related problems could have been solved . However, if one experiments with forcing a...report 1965
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Prych, E.A. (author), Hubbell, D.W. (author), Glenn, J.L. (author)Columbia River estuary is being conducted by the U.S . Geological Survey. The necessity for information on water discharge, suspended and bed sediments, and radioactivity prompted the development of new measurement techniques and equipment suitable for estuarine conditions. Flow velocities and directions throughout the entire depth at a single...report 1965
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Gronewald, G.J. (author), Duncan, W.W. (author)This is a progress report on the Homer Spit Beach Erosion Study. Information is presented regarding the rapid acceleration of the erosion processes due to the subsidence of the Homer Spit during the 27 March 1964 earthquake. The effect on existing groins both before and after the quake are discussed. Immediately after the quake, emergency...report 1965
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Murphy, W.M. (author), Geelan, C.W. (author)The purpose of this paper is to present the hydraulic problems relating to the computation of hurricane surge, hurricane waves, runup of the waves for providing hurricane flood protection at Texas City, Texas, as well as the effects of rainfall upon the protected area during periods of normal and high tides. The problems of providing protection...report 1965
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Herbich, J.B. (author), Van Weele, B. (author)The erosion of sand beaches due to oscillatory water particle motion of non-breaking waves can be of importance, particularly where such a beach is fronted by a sea wall supported on spread foundation. Laboratory study was conducted with natural beach sand; waves were generated mechanically. Geometric variables included the inclination of sea...report 1965
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Raichlen, F. (author)The equation of continuity and the equation of motion for two-dimensional shallow-water waves are transformed into a set of difference equations which can be solved numerically to obtain the fundamental period and the periods of the higher modes of oscillation of a closed basin of arbitrary shape. From these periods and the difference equations...report 1965
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Magoon, O.T. (author)This paper presents a brief discussion of structural damage by tsunamis based primarily on damage produced by recent tsunamis along the northern California coast. Of these recent tsunamis, by far the most damaging was the one of March 1964; which caused approximately $11,000,000 damage at Crescent City, about $300,000 damage at other coastal...report 1965
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Dean, R.G. (author)The engineer required to calculate theoretical wave characteristics such as wave profiles and wave forces and moments on piling, is confronted with a problem which includes (1) selecting one of a number of available theories and (2) calculating the required information which, for some of the theories, is a relatively complicated procedure. This...report 1965
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Arno, N.L. (author)This paper presents problems associated with restoring and expanding a small boat basin at Cordova, Alaska following the Alaskan earthquake of 27 March 1964 . It Shows that even under very adverse conditions, work can proceed and a workable result can be obtained . The paper is primarily non-technical but lessons learned here may be of use to...report 1965
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Mash, F.D. (author)During the past few decades, industrial demands for buried shell have been rapidly increasing. Highway construction, the petrochemical industries, and cement manufacturers are among the major users of shell. Semi-fossil oyster shell is found in tidal embayments in deposits of varying thickness and is dredged from depths varying from two or three...report 1965