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Göteborgs universitets publikationer

Dynamics of medium-intensity dense water plumes in the Arkona Basin, Western Baltic Sea

Författare och institution:
H. Burchard (-); H. U. Lass (-); V. Mohrholz (-); L. Umlauf (-); J. Sellschopp (-); V. Fiekas (-); K. Bolding (-); Lars Arneborg (Institutionen för geovetenskaper)
Publicerad i:
Ocean Dynamics, 55 ( 5-6 ) s. 391-402
Artikel, refereegranskad vetenskaplig
Sammanfattning (abstract):
In this study, the dynamics of medium-intensity inflow events over Drogden Sill into the Arkona Sea are investigated. Idealised model simulations carried out with the General Estuarine Transport Model suggest that most of the salt transport during such inflow events occur north of Kriegers Flak, a shoal with less than 20 in water depth Surrounded by water depths of more than 40 in. This assumption about the pathway is supported by recent ship-based observations in the Arkona Sea during a medium-intensity inflow event. The propagation of a saline bottom plume could be observed during several days after having passed Drogden Sill. In the area north of Kriegers Flak the plume was about 10 m thick, and propagated with more than 0.5 m s(-1) and a salinity of tip to 20 psu (with ambient water salinity being 8 psu) eastwards. Although the model simulations were idealised, the Structural agreement between the observation and model result was good, The structure and pathways of these medium-intensity inflow events are of specific interest due to the plans for erecting extensive offshore wind farms in the Arkona Sea which may under certain circumstances lead to increased entrainment of ambient water into the bottom Plumes.
Ämne (baseras på Högskoleverkets indelning av forskningsämnen):
Geovetenskap och miljövetenskap
bottom plumes, entrainment, turbulent mixing, baltic sea, deep-water, oresund, resistance, turbulence, advection, momentum, proper, model
Postens nummer:
Posten skapad:
2007-10-16 13:04

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