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Sediment Budget for a Semi-enclosed Sea in a Near Homogeneous Lithology; Example of Kieler Bucht, Western Baltic. (1987)

Healy, Terry ; Werner, Friedrich

Senckenberg Gesellschaft für Naturforschung

In: Senckenbergiana Maritima, 19 (3). pp. 195-222.

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Publikationsdatum: 2020-06-17

Beschreibung: The sediment budget for the Kieler Bucht, a semi-enclosed sea formed in a relatively homogeneous lithology of Pleistocene till in the Western Baltic, has been refined by utilising new data from independent approaches. Analysis of the detailed network of sub-bottom profiles from the "POSEIDON 23" cruise allowed clear definition of the postglacial muddy sediment deposits. Estimation of sand deposited is based on the pattern of surficial sediment distribution. Volumes of till eroded are calculated from survey, cartographic, and erosion data of the cliffs and submarine platforms around the bay. Best estimates for the sediment balance are an erosion of 2.6-2.9 X 109 m3 of till from the coast and sea floor, resulting in a sand production of 0.8-0.9 X 109 m3 and a deposition of about 5.5 X 109 m3 of muddy sediment. Congruence of various models of till eroded in relation to measured volume of sand and muddy deposits, suggests that the sediment budget is in balance, and that less than 10% of the muddy deposits need to be accounted for by invoking transportation into the Bucht.

Materialart: Article , PeerReviewed

Format: text

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