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Modelled bottom current (BALANCE)

Summary


Model results of the annual mean bottom current velocity (m/s).


Description


This dataset shows model results of the annual mean bottom current velocity (m/s). Data source, NERI/Denmark. Currents in the sea can be generated by many different parameters, among which are: I. Tidal motion II. Wind stress III. Density difference due to differences in salinity or temperature IV. Seismic activity and motion of the earth In near shore regions, the wave-induced along shore currents are the dominating currents, whereas in offshore regions, a combination of tidal and meteorological forces is the dominating current generating parameters. Near the sea bottom the friction of the current flow forms a turbulent layer, termed boundary layer, over the seabed. The thickness of this layer ranges from few meters up to several tens of meters. Within this layer the current speed increases nonlinearly with the height above the seabed, being zero at the seabed and maximum at the top of the layer. The variation of the current speed with height above the seabed is called current velocity profile.

Simple

Date (Publication)
2008
Unique resource identifier
https://metadata.helcom.fi/geonetwork/srv/eng/catalog.search#/metadata/10982458-8479-4f63-841d-1e11cb8dde3f
pointOfContact
  HELCOM Secretariat

GEMET - INSPIRE themes, version 1.0

  • Oceanographic geographical features

GEMET

  • ocean

  • water bottom

  • ocean current

Continents, countries, sea regions of the world.

  • Baltic Sea

Keywords
  • MADS

Use constraints
Other restrictions
Other constraints

Use constraints: Free for non-commercial purposes. Reference to source (NERI, BALANCE) must be given.

Access constraints
Other restrictions
Other constraints
Access constraints: No limitations on public access.
Spatial representation type
Grid
Metadata language
English
Topic category
  • Environment
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Begin date
2007-01-01
Unique resource identifier
EPSG:3035
Distribution format
  • TIFF ( )

OnLine resource
Download dataset ( WWW:LINK-1.0-http--link )
OnLine resource
Open in Map Viewer ( WWW:LINK-1.0-http--link )
Hierarchy level
Dataset

Conformance result

Date (Publication)
2010-12-08
Statement

This dataset shows model results for the annual mean bottom current velocity (m/s). The map has been produced by NERI/Denmark for the BSR INTERREG IIIB project BALANCE.


The model results were based on monthly averaged values from January

2003 and for one year. The bottom velocities show the largest values in the Danish Straits as well as the Kattegat and in the southern entrance to the Bothnian Sea.


In order to be displayed in the HELCOM Map Service, the map coordinate system and projection was changed from original WGS1984_UTM34N to ETRS_1989_LAEA.


For details on the model and the data sources, please refer to Bendtsen, J., Söderkvist, J., Dahl, K., Hansen, J.L.S. & Reker, J. (2007): Model simulations of blue corridors in the Baltic Sea. BALANCE Interim Report no. 9. Available at http://balance-eu.org/xpdf/balance-interim-report-no-9.pdf.

File identifier
10982458-8479-4f63-841d-1e11cb8dde3f XML
Metadata language
English
Character set
UTF8
Hierarchy level
Dataset
Date stamp
2023-11-10T14:20:43
pointOfContact
  HELCOM Secretariat
 
 

Overviews

Spatial extent

N
S
E
W
thumbnail


Keywords

GEMET
ocean ocean current water bottom
GEMET - INSPIRE themes, version 1.0
Oceanographic geographical features

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Associated resources

Not available


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