Investigation of excess water-pressure under the asphalt facing of sand-cored dykes: Paper for 9the Conference of the International Association of Hydro-Environment Engineering and Research, Belgrade, 1961

The excess pressures anticipated underneath the asphalt facing of a number of sea dykes were determined with the aid of plate-shaped electrical conductors and alternating current. As these excess pressures are influenced by factors varying from place to place in the prototype, a series of tests were carried out in which one or more of these...

Stroombestendigheid van los materiaal in een normale stroming

Bed-load transportmeter for find sand "Sphinx"

A new bed-load transportmeter has been designed particularly for very fine bed material (below 400 micron). The basic conception is the same as for the so-called Delft-bottle used for measuring transport by turbulent suspension. The instrument is of the flow-through type. The flow enters through a narrow and relatively high nozzle and is...

AN EXPERIMENTAL STUDY OF SUBMARINE SAND BARS

Preliminary Considerations A. Bar Formation B. Depth and Form of Bars Equipment and Procedure Results of Laberatory Experiments V. Field Observatio ns A. Form and Dimensions of Natural Bars B. Lake Michigan Bars and Observed Waves Factors AfIecting Mechanism of Bar Formation and Movement

Sand waves in the North Sea

Summary of research in the British Channel on bedforms with the aim to show if there is an interaction with local sediment transport overthere and the sand balance of the Dutch coast. Focus is on echosounding and observation techniques.

Sand waves in the North Sea

Summary of research in the British Channel on bedforms with the aim to show if there is an interaction with local sediment transport overthere and the sand balance of the Dutch coast. Focus is on echosounding and observation techniques. Theoretical background of the formation of ripples and waves on seabed and riverbed. Comparison of dunes on...