2026-04-06T09:56:21Z
http://dmoai.cloud.dkrz.de/oai/provider
oai:wdcc.dkrz.de:iso_3565414
2026-04-06T00:08:20Z
iso-wdcc-doi
wdc-climate.de:3565414
eng; USA
collection
coastMap_Substrate_MGS
Dipl.-Geogr. Ulrike Kleeberg
Helmholtz-Zentrum Hereon
https://hereon.de/
pointOfContact
Dipl.-Geogr. Ulrike Kleeberg
Helmholtz-Zentrum Hereon
https://hereon.de/
pointOfContact
2017-11-16T14:53:06
ISO 19115
ISO 19115-2:2009
Median grain size of North Sea surface sediments
2017-12-12
publication
1
coastMap_Substrate_MGS
doi:10.1594/WDCC/coastMap_Substrate_MGS
Prof. Dr. Kay-Christian Emeis
University of Hamburg
http://www.cen.uni-hamburg.de/
Email: kay.emeis@uni-hamburg.de
principalInvestigator
Dr. Frank-Detlef Bockelmann
Helmholtz-Zentrum Geesthacht, Zentrum für Material- und Küstenforschung GmbH
not filled
Email: frank-detlef.bockelmann@hzg.de
principalInvestigator
Dr. Frank-Detlef Bockelmann
Helmholtz-Zentrum Geesthacht, Zentrum für Material- und Küstenforschung GmbH
not filled
Email: frank-detlef.bockelmann@hzg.de
originator
Dr. Frank-Detlef Bockelmann
Helmholtz-Zentrum Geesthacht, Zentrum für Material- und Küstenforschung GmbH
not filled
Email: frank-detlef.bockelmann@hzg.de
author
WDC Climate at DKRZ
publisher
purpose:
The map shows the median grain size (or d50) of surface sediments in the North Sea predicted by interpolation of legacy grain size distribution data. It has been produced to aid in describing physical habitat characteristics and to supply consistent baseline data and boundary conditions for ecological and biophysical modelling.
abstract:
In grain size analysis, the median is the midpoint of the cumulative particles size distribution curve of a sediment sample. The median grain size is an important biophysical variable that relates to sediment stability and often can be mapped with a quantifiable correspondence to the occurrence of benthic species and assemblages. This map conveys information on the median grain size 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 30,000 sediment samples from many national and European surveys conducted over a period of more than 50 years. 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 pointdata, users should be aware of the differing methods by which the grain size analyses were conducted. As a consequence, map confidence is not necessarily uniform and thus areas not always comparable, even though the interpolation surface my look continuous.
Dipl.-Geogr. Ulrike Kleeberg
Helmholtz-Zentrum Hereon
https://hereon.de/
pointOfContact
zip-file
geodata
observational data
seafloor conditions
ship
CC-BY-NC-4.0: Creative Commons Attribution Non Commercial 4.0 International https://creativecommons.org/licenses/by-nc/4.0/
eng; USA
-5.0
12.0
50.0
62.0
calendrical
1960-01-01
2014-12-31
Median grain size content
not filled; unit: PHI scale
zip-file
1
https://www.wdc-climate.de/ui/entry?acronym=coastMap_Substrate_MGS
information
collection
n/a
None