Changes to hydrological conditions (HOLAS 2)
Pressure layer combines all human activities that cause changes to hydrological conditions.
The human activities were presented as point data which were given spatial extents (given below). The pressure value was given as the proportion of the grid cell under the pressure.
The following human activities were combined into the changes to hydrological conditions layer;
- Hydropower dams (a 1km2 grid cell in the river estuary was selected)
- Water course modification (1 km)
- Wind turbines (operational, 0.3 km, linear decline)
- Oil platforms (0.5 km, linear decline)
The human activity datasets were first processed separately covering the whole Baltic Sea and then summed together and overlapping areas were dissolved to remove double counting. Attenuation gradients are assigned to each layer as described above. Area effected decreases when distance from avtivity increases. Layer was normalized.
Simple
- Date (Creation)
- 2018-01-15
- Unique resource identifier
- https://metadata.helcom.fi/geonetwork/srv/eng/catalog.search#/metadata/50a19d2e-bc8a-40f3-a786-9e26274778a6
-
GEMET - INSPIRE themes, version 1.0
-
-
Hydrography
-
-
GEMET
-
-
environmental impact
-
- Keywords
-
-
MADS
-
HOLAS2
-
- Use constraints
- Other restrictions
- Other constraints
-
Use constraints: Data can be used freely given that the source is cited.
- Access constraints
- Other restrictions
- Other constraints
- Access constraints: No limitations on public access.
- Spatial representation type
- Grid
- Metadata language
- English
- Topic category
-
- Environment
- Begin date
- 2011-01-01
- End date
- 2015-12-13
- Unique resource identifier
- EPSG:3035
- Distribution format
-
-
TIFF
(
)
-
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
-
Data source:
See separate fact sheet on human activities listed in the description.
Data quality: Gaps may occur.
Attribute information: Raster values represent the area effected (km2).
Spatial resolution: Original data as vectors, finally converted to 1 km x 1 km grid.
- File identifier
- 50a19d2e-bc8a-40f3-a786-9e26274778a6 XML
- Metadata language
- English
- Character set
- UTF8
- Hierarchy level
- Dataset
- Date stamp
- 2023-03-15T14:45:34