Depth to redox boundary in the subsurface of Denmark, 100 m grid
The map illustrates depth to the redox interface in meters below ground. The interface marks the transition from oxidised to reduced conditions in the subsurface. Based on approx. 13.000 observations of colour changes in sediment cores, a model has been developed describing relations between explanatory variables and depth to the redox interface. The machine learning method random forest has been used to develop the model. The map shows the best estimate of the location of the interface in a 100 m grid resolution. The applied method additional provides an estimate of the uncertainty. The method is described further in:
Koch J, Stisen S, Refsgaard JC, Ernstsen V, Jakobsen PR, Højberg AL (2019) Modelling depth of the redox interface at high resolution at national scale using Random Forest and residual Gaussian simulation, Water Resour. Res., https://doi.org/10.1029/2018WR023939
Koch J, Stisen S, Refsgaard JC, Ernstsen V, Jakobsen PR, Højberg AL (2019) Nyt nationalt redoxkort i høj opløsning. In Tema: TReNDS. Vand & Jord, 26 (1), 26-29.
Simple
- Date (Creation)
- 2019-03-12
- Identifier
- dk.geus: / Redox dybde 100m grid
- Presentation form
- Digital map
- Purpose
- The map shows the value of the redox limit in meters below ground. The redox boundary is defined as the transition between soil layers that are oxidized to soil layers where reduced conditions occur. On the basis of approx. 13,000 observations of color change in sediment samples, a model has been developed that describes the relationship between various explanatory variables and the depth to the redox limit. The machine learning method "Random Forest" is used for the model, and a spatial grid resolution of 100 m is used. The map shows the best estimate of the depth to the redox limit.
- Status
- Completed
- Maintenance and update frequency
- As needed
- GEMET - INSPIRE themes, version 1.0
-
- Geology
- Keywords
-
- Redox
- Nitrate
- Access constraints
- Copyright
- Use constraints
- Copyright
- Other constraints
- The map may be published with the consent of GEUS.
- Other constraints
- Conditions for re-use of data https://data.geus.dk/geusmap/terms_20140620.pdf
- Spatial representation type
- Grid
- Denominator
- 0
- Distance
- 100 m
- Metadata language
- dan
- Topic category
-
- Geoscientific information
- Environment
- Inland waters
))
- Reference system identifier
- EPSG / https://epsg.io/25832
- Geometric object type
- Complex
- Distribution format
-
-
Web Service
(
1.3.0
)
-
Web Service
(
1.3.0
)
- OnLine resource
-
Denmark's Geology Portal
(
WWW:LINK-1.0-http--link
)
GEUS' web portal for geological maps of Denmark
- OnLine resource
-
Download
(
WWW:DOWNLOAD-1.0-http--download
)
Download datasets from GEUS' Dataverse
- OnLine resource
-
Webservice
(
OGC:WMS-1.3.0-http-get-capabilities
)
Web service for the dataset
- OnLine resource
- Publication ( WWW:LINK-1.0-http--link )
- Hierarchy level
- Dataset
Conformance result
- Date (Publication)
- 2010-12-08
- Explanation
- This field has no significance
- Pass
- No
- Statement
- The map was produced by Julian Koch, Anker L. Højberg og Vibeke Ernstsen in 2019.
- File identifier
- b931207c-d386-493a-b5e4-073adb43297c XML
- Metadata language
- dan
- Hierarchy level
- Dataset
- Date stamp
- 2023-10-23T14:41:19
- Metadata standard name
- ISO 19115:2003 / ISO 19139:2007
Overviews

Spatial extent
))
Provided by
