Zoeken
Zoeken kan via de modus 'eenvoudig zoeken' (één veld) of uitgebreid via 'geavanceerd zoeken' (meerdere velden). Zo kan je bv. zoeken op een combinatie van een auteursnaam (auteur), een jaartal (jaar) en een documenttype.
Boekenmand
Nuttige resultaten kan je aanvinken en toevoegen aan een mandje. De inhoud hiervan kan je exporteren of afdrukken (naar bv. PDF).
RSS
Op de hoogte blijven van nieuw toegevoegde publicaties binnen uw interessegebied? Dit kan door een RSS-feed (?) te maken van jouw zoekopdracht.
nieuwe zoekopdracht
Material transport from the nearshore to the basinal environment in the southern Baltic Sea: 1. Processes and mass estimates
Christiansen, C.; Edelvang, K.; Emeis, K.; Graf, G.; Jähmlich, S.; Kozuche, J.; Laima, M.; Leipe, T.; Löffler, A.; Lund-Hansen, L.C.; Miltner, A.; Pazdro, K.; Pempkowiak, J.; Shimmield, G.B.; Shimmield, T.; Smith, J.; Voss, M.; Witt, G. (2002). Material transport from the nearshore to the basinal environment in the southern Baltic Sea: 1. Processes and mass estimates. J. Mar. Syst. 35(3-4): 133-150. http://dx.doi.org/10.1016/s0924-7963(02)00126-4
In: Journal of Marine Systems. Elsevier: Tokyo; Oxford; New York; Amsterdam. ISSN 0924-7963; e-ISSN 1879-1573, meer
|   |
| Trefwoorden |
Models
Physics > Mechanics > Dynamics > Sediment dynamics
Resources > Natural resources > Mineral resources > Mineral deposits > Seabed deposits > Aggregates
Sedimentation
Suspension > Resuspension
Transport
Pomerania [Marine Regions]
Marien/Kust |
| Author keywords |
sediment dynamics; aggregates; sedimentation; resuspension; materialtransport; models; Baltic Sea; Pomeranian Bight |
| Auteurs | | Top |
- Christiansen, C.
- Edelvang, K.
- Emeis, K.
- Graf, G.
- Jähmlich, S.
- Kozuche, J.
|
- Laima, M.
- Leipe, T.
- Löffler, A.
- Lund-Hansen, L.C.
- Miltner, A.
- Pazdro, K.
|
- Pempkowiak, J.
- Shimmield, G.B.
- Shimmield, T.
- Smith, J.
- Voss, M.
- Witt, G.
|
| Abstract |
Processes involved in erosion, transport and deposition of cohesive materials are studied in a transect from shallow (16 m) to deep (47 m) water of the SW Baltic Sea. The wave- and current-induced energy input to the seabed in shallow water is high with strong variability and suspended matter concentrations may double within a few hours. Primary settling fluxes (from sedimentation traps) are less than 10 g m-2 day-1, whereas resuspension fluxes (evaluated from sedimentation flux gradients) are 15-20 times higher and the residence time for suspended matter in the water column is 1-2 days. Settling velocities of aggregates are on average six times higher than for individual particles resulting in an enhanced downward transport of organic matter. Wave-induced resuspension (four to six times per month) takes place with higher shear stresses on the bottom than current-induced resuspension (three to five times per month). The short residence time in the water column and the frequent resuspension events provide a fast operating benthic-pelagic coupling. Due to the high-energy input, the shallow water areas are nondepositional on time scales longer than 1-2 weeks. The sediment is sand partly covered by a thin fluff layer during low-energy periods. The presence of the fluff layer keeps the resuspension threshold very low (<0.023 N m-2) throughout the year. Evaluated from 3-D sediment transport modeling, transport from shallow to deep water is episodic. The net main directions are towards the Arkona Basin (5.5×105 t per year) and the Bornholm Basin (3.7×105 t per year). Energy input to the bottom in deep water is low and takes place much less frequently. Wave-induced resuspension occurs on average once per month. Residence time of particles (based on radioactive isotopes) in the water column is half a year and the sediment accumulation rate is 2.2 mm year-1 in the Arkona Basin. |
IMIS is ontwikkeld en wordt gehost door het VLIZ.
