Effects of a specific climate scenario on the hydrography and transport of conservative substances in the Weser estuary, Germany: a case study

Abstract

CR Climate Research Contact the journal Facebook Twitter RSS Mailing List Subscribe to our mailing list via Mailchimp HomeLatest VolumeAbout the JournalEditorsSpecials CR 18:77-87 (2001) - doi:10.3354/cr018077 Effects of a specific climate scenario on the hydrography and transport of conservative substances in the Weser estuary, Germany: a case study H.-J. Grabemann, I. Grabemann*, D. Herbers, A. Müller GKSS Forschungszentrum Geesthacht GmbH, Postfach 1160, 21494 Geesthacht, Germany *Corresponding author: E-mail: grabemann@gkss.de ABSTRACT: The effects of a presumed climate scenario on the hydrography of the Weser estuary between Bremen (weir) and Robbensüdsteert (~10 km downstream of Bremerhaven) were investigated using numerical modeling. The results provide a basic approach for further studies addressing, for example, the utilization and ecology of the Weser estuary and the adjacent areas within the bounds of the winter dike. Morphological aspects are not considered in this paper. A rise in water level at the seaward boundary (high water +70 cm, low water +40 cm) propagates upstream only with some slight deviations. In the climate scenario, the subtidal volume and sublittoral for the section between the weir and Bremerhaven increase by about 6 and 7% respectively, while the tidal prism and eulittoral increase by about 16 and 52% respectively. Residence times of conservative water constituents are prolonged for fixed runoffs. These times also affect the water quality. The location of the upstream boundary of the brackish-water zone is located on average 2 km further upstream for fixed runoffs, possibly causing problems with marsh irrigation. KEY WORDS: Weser estuary · Hydrography · Climate scenario Full text in pdf format PreviousNextExport citation RSS - Facebook - Tweet - linkedIn Cited by Published in CR Vol. 18, No. 1-2. Online publication date: October 18, 2001 Print ISSN: 0936-577X; Online ISSN: 1616-1572 Copyright © 2001 Inter-Research.