Beobachtungen zur Geschwindigkeit gegenwärtiger Küstenveränderungen

The indications of the speed of the present coastal changes were collected at two dozen of localities of Venezuela, Portugal and Spain by comparisons in a time period of 3, 5, or 9 years, respectively. The observations put in tabular form show that - flat shores may change continuously, but generally represent forms of an equal balance; - the estuaries may be subject to rhythmical changes without any quick disturbing of the former morphological structure; - steep coasts do not change continuously, but are formed episodically by small hazards, whereby these dynamic phases may be seperated by single years or decades.