Subsidence after drainage of the deposits in the former Zuyder Zee and in the brackish and marine forelands in The Netherlands

Survey of the results of studies with a view to enabling probable subsidence to be predicted with the greatest possible accuracy. Contents. Brief history of subsidence studies; Sediments which are subject tot subsidence; Consequences of subsidence. Methods used in the study: Dry bulk weight and specific volume; Accuracy of the specific volumes; Elevation measurements and borings; The relationship between specific volume and clay and organic matter contents; Method of calculating probable subsidence with the aid of specific volumes; Consolidation constants. Factors which determine the extent of subsidence: Climate; Remarks on the ripening process; Factors influencing the specific volume; Subsidence as a function of time; Loss of soil constituents. Subsidence of the topsoil: Sediments in the IJsselmeer region; Sediments in the Wadden area; Sediments in the brackish to fresh tidal area of the South-West Netherlands; Sediments in the saline tidal area of the South-West Netherlands; Influence of seepage on subsidence. Some remarks on subsoil subsidence.