3-DIMENSIONAL NUMERICAL MODELING OF LATE QUATERNARY PALEOCEANOGRAPHY AND SEDIMENTATION IN THE NORTHERN NORTH-ATLANTIC.

Haupt, B. J., Schaferneth, C. and Stattegger, Karl (1995) 3-DIMENSIONAL NUMERICAL MODELING OF LATE QUATERNARY PALEOCEANOGRAPHY AND SEDIMENTATION IN THE NORTHERN NORTH-ATLANTIC. Geologische Rundschau, 84 (1). pp. 137-150.

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Abstract

Modelling of Late Quaternary paleoceanography and sedimentation in the northern North Atlantic (NNA) is achieved by coupling the ocean general circulation model SCINNA (Sensitivity and Circulation In the NNA) to the sedimentation models SENNA (SEdimentation In the NNA) and PATRINNA (PArticle TRacing In the NNA). SCINNA is based on the primitive equations with conservation of mass, momentum, energy, heat and salt. SENNA and PATRINNA are driven by temperature, salinity and velocity fields derived from SCINNA. The modelling includes three-dimensional circulation of the ocean, sediment transport in the water column and two-dimensional sedimentary processes in a thin bottom layer. SENNA calculates the erosion, transport and deposition of sediments, resulting in sedimentation patterns for specific time intervals. PATRINNA models the transport paths of single sediment grains corresponding to the ocean circulation. The NNA reacts in a highly sensitive manner to small forcing changes, as shown by our sensitivity experiments. From these experiments it is possible to model specific circulation regimes for glacial and interglacial periods, for melt water events and for the onset of glaciation. The different climatic stages in the circulation model produce different sediment patterns in the sedimentation models, which correspond closely to the sedimentary record.

Document Type: Article
Additional Information: Times Cited: 4 Haupt, bj schaferneth, c stattegger, k
Research affiliation: Kiel University
Refereed: Yes
ISSN: 0016-7835
Date Deposited: 30 Jan 2017 10:19
Last Modified: 30 Jan 2017 10:19
URI: http://oceanrep.geomar.de/id/eprint/35592

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