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The scale of dBZ values can be seen along the bottom of the image. dBZ is a logarithmic dimensionless technical unit used in radar.It is mostly used in weather radar, to compare the equivalent reflectivity factor (Z) of a remote object (in mm 6 per m 3) to the return of a droplet of rain with a diameter of 1 mm (1 mm 6 per m 3). [1]
At the time of the flood, 20% of the land of the Netherlands was below mean sea level (subsequently with the expansion of Flevoland this proportion has increased), and the next-highest 30% sat at less than 1 metre (3.3 ft) above sea level. Such land relies heavily on sea defences and was worst affected, recording 1,836 deaths and widespread damage.
The calculated averaged was called the Amsterdams Peil ("Amsterdam level", AP) and used to calculate the minimum height of the sea dykes, which he set at "9 feet and 5 inches" (2.67 m) above AP. [2] In 1850, the datum was used at several places in Belgium, and in 1874 the German government adopted the datum for first-order levelling. [3]
The Delta Works (Dutch: Deltawerken) is a series of construction projects in the southwest of the Netherlands to protect a large area of land around the Rhine–Meuse–Scheldt delta from the sea.
The old rule "Whom the water hurts, he the water stops" (Wie het water deert, die het water keert) meant that those living at the dike had to pay and care for it. This led to haphazard maintenance and it is believed that many floods would not have happened or would not have been as severe if the dikes had been in better condition. [ 7 ]
Het 4e gymnasium; Ignatiusgymnasium; Inholland University of Applied Sciences; International School of Amsterdam; Islamitisch College Amsterdam; IVKO (Idividueel Voortgezet Kunstzinnig Onderwijs) Metis Montessori Lyceum; Montessori Lyceum Amsterdam; Osdorpse Montessorischool; Pieter Nieuwland College; ROC van Amsterdam; Spinoza Lyceum; Vossius ...
The Afsluitdijk (literally translated: shut-off-dyke) was completed in 1932, thereby shutting off the Zuiderzee (lit: Southern Sea) from the North Sea. [4] Until then, the Zuiderzee had been a large bay south of the North Sea which gave maritime access to five provinces of The Netherlands, and particularly during the Dutch Golden Age provided a protected entrance and exit for the harbour of ...
The IJsselmeer [a] (Dutch: [ˌɛisəlˈmeːr] ⓘ; West Frisian: Iselmar, Dutch Low Saxon: Iesselmeer), also known as Lake IJssel in English, [3] is a closed-off freshwater lake in the central Netherlands bordering the provinces of Flevoland, North Holland and Friesland. It covers an area of 1,100 km 2 (420 sq mi) with an average depth of 4.5 m ...