Material transport from the nearshore to the basinal environment in the southern Baltic Sea: I. Processes and mass estimates

Research output: Research - peer-reviewJournal article – Annual report year: 2002

Without internal affiliation

  • Author: Christiansen, C.

  • Author: Edelvang, Karen

    DHI Denmark

  • Author: Emeis, K.-C.

  • Author: Graf, G.

  • Author: Jahmlich, S.

  • Author: Kozuch, J.

  • Author: Laima, Mario

  • Author: Leipe, T.

  • Author: Loffler, A.

  • Author: Lund-Hansen, L.C.

  • Author: Miltner, A.

  • Author: Pazdro, Ksenia

  • Author: Pempkowiak, J.

  • Author: Shimmield, G.

  • Author: Smith, J.

  • Author: Voss, M.

  • Author: Witt, G.

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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 (
Original languageUndefined/Unknown
JournalJournal of Marine Systems
Volume35
Issue number3-4
Pages (from-to)133-150
ISSN0924-7963
DOIs
StatePublished - 2002
Externally publishedYes
CitationsWeb of Science® Times Cited: 52

    Research areas

  • GEOSCIENCES, MARINE, OCEANOGRAPHY, BENTHIC BOUNDARY-LAYER, CONTINENTAL-MARGIN, SEDIMENT RESUSPENSION, SETTLING VELOCITY, POMERANIAN-BIGHT, SATELLITE DATA, ODER RIVER, WATER, DYNAMICS, INSTRUMENT, sediment dynamics, aggregates, sedimentation, resuspension, material transport, models, Baltic Sea, Pomeranian Bight, Aquatic Science, Oceanography, Aggregates, Material transport, Models, Resuspension, Sediment dynamics, Sedimentation, Particles (particulate matter), Sediment transport, Shear stress, Suspensions (fluids), Mass estimations, deposition, erosion, sediment transport, three-dimensional modeling, T
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