Flushing times of the North Sea

The present report deals with an attempt to establish the possibility of using the concept of "flushing time" in a practical situation of the North Sea. The excercise should be looked upon as a basis for further studies. Especially in connection with research of marine pollution this may be relevant. In that connection data given here might also be used in practical pollution problems. At the present stage, however, this might easily lead to mis-use of data that are presented for another purpose. And although in the following some of the considerations given are of a pratical nature in,order to illustrate the significance of-the concepts, the aims of the report are primarily to contribute to scientific work, and results presented here will only become more and more firm as they are supported by further scientific evidence.