Total organic carbon content of North Sea surface sediments

purpose:

This map shows the total organic carbon content (TOC) of surface sediments in the North Sea. It was produced by interpolation of legacy data from more than 3000 samples collected between 1960 and 2014. The distribution of this map allows the user to visualize an important marine habitat characteristic and to exploit the dataset for ecological and biogeochemical modelling.

abstract:

Weight percent total organic carbon (TOC) is one of the most commonly used descriptors for marine sediments. It is used to judge primary productivity of the overlying water column and refers to the amount of organic matter preserved within sediment. TOC has a major influence on biogeochemical processes occurring in sediments, including the regulation of the behavior of the other chemical species such as metals and organic pollutants. Therefore, determination of TOC is an essential component of environmental characterization analysis.This map conveys information on the weight percent TOC of seabed sediments in the North Sea. It has been produced with multivariate geostatistics (external drift kriging) using the percentage mud content as a trend variable. The underlying data set is a compilation of over 3,000 sediment samples from many national and European surveys conducted between 1960 and 2014. Due to the vintage of some samples in the database, users are advised to consider the dynamic nature of the seafloor when using the data and when creating derived surrogate based habitat maps. Also, due to the diversity of sources for the point data, users should be aware of the differing methods by which the TOC analyses were conducted. As a consequence, map confidence is not necessarily uniform and thus areas not always comparable, even though the interpolation surface may look continuous.

 
Citation proposal
Dr. Frank-Detlef Bockelmann (Helmholtz-Zentrum Geesthacht, Zentrum für Material- und Küstenforschung GmbH). Total organic carbon content of North Sea surface sediments. https://gdk.gdi-de.org/geonetwork/srv/api/records/de.dkrz.wdcc.iso3565253
 

INSPIRE

Identification

File identifier
de.dkrz.wdcc.iso3565253   XML
Hierarchy level
series Series
Online resource
Resource identifier
code
None
Metadata language
eng English
Encoding
Format
zip-file
Version
zip-file
Projection
 

Classification of data and services

 

Classification of data and services

Coupled resource
Coupled resource
 
 

Classification of data and services

Coupled resource
Coupled resource
 
 

Keywords

Other keywords
Keywords ( Theme )
  • seafloor conditions
Keywords ( Theme )
  • geodata
 
 

Geographic coverage

N
S
E
W


 

Temporal reference

Temporal extent
Begin
1960-01-01
End
2014-12-31
Temporal extent
Date ( Creation )
2017-11-13
 

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Conformity
 

Conformity

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Conformity
 

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Responsible organization (s)

Contact for the resource
Organisation name
Helmholtz-Zentrum Geesthacht, Zentrum für Material- und Küstenforschung GmbH
Organisation name
Helmholtz-Zentrum Geesthacht, Zentrum für Material- und Küstenforschung GmbH
 

Responsible organization (s)

Contact for the resource
Organisation name
Helmholtz-Zentrum Geesthacht, Zentrum für Material- und Küstenforschung GmbH
Organisation name
Helmholtz-Zentrum Geesthacht, Zentrum für Material- und Küstenforschung GmbH
 

Metadata information

Contact for the metadata
Organisation name
Helmholtz-Zentrum Geesthacht, Zentrum für Material- und Küstenforschung GmbH
Organisation name
Helmholtz-Zentrum Geesthacht, Zentrum für Material- und Küstenforschung GmbH
Organisation name
Helmholtz-Zentrum Geesthacht, Zentrum für Material- und Küstenforschung GmbH
Organisation name
Center for Earth System Research and Sustainability, University of Hamburg
Organisation name
Helmholtz-Zentrum Geesthacht, Zentrum für Material- und Küstenforschung GmbH
Date stamp
2022-04-25T04:32:06
 
 

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Conformance class 1: invocable

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Conformance class 2: interoperable

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Conformance class 3: harmonized

 
 

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