Die Küste, 74 ICCE (2008), 1-17
15
4. Conclusion
The data presented show well-based facts about the development of the North Sea and
the Baltic Sea. However, they also point to numerous remaining uncertainties. From the re
sults presented above, it is obvious, that the correlation of postglacial sea level fluctuations
between the North Sea and the Baltic Sea is complicated because of both a lot of local phe
nomena (compaction, influence of salt tectonics) and far-field factors (gradient in isostatic
uplift, neotectonics), which are superimposed. These geologically caused movements have to
be correlated with the eustatic water level fluctuations. Up to the present, Holocene sea level
curves from the Baltic Sea and the North Sea do not match due to a lack of comprehensive
data sets, especially from offshore regions.
The younger geological development of the North and Baltic Sea documents, that the
natural coastal depositional system has a relatively high capacity to adapt to a fluctuating -
but especially to a rising sea level. This, however, is often associated with a dislocation or even
breakup and/or a new formation of morphological elements. Since this does not in any case
fit with human interests, coastal engineering efforts have been necessary in the past and will
be necessary in the future to manage the coastal anthroposphere.
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