Title

EMODnet Digital Bathymetry (DTM 2016) - Tile C4

Date (Publication)

2016-09-30

Citation identifier

DOI:10.12770/c7b53704-999d-4721-b1a3-04ec60c87238

Abstract

The "EMODnet Digital Bathymetry (DTM) - 2016" is a multilayer bathymetric product for Europe’s sea basins covering::

• the Greater North Sea, including the Kattegat and stretches of water such as Fair Isle, Cromarty, Forth, Forties, Dover, Wight, and Portland

• the English Channel and Celtic Seas

• Western and Central Mediterranean Sea and Ionian Sea

• Bay of Biscay, Iberian coast and North-East Atlantic

• Adriatic Sea

• Aegean - Levantine Sea (Eastern Mediterranean)

• Azores - Madeira EEZ

• Canary Islands

• Baltic Sea

• Black Sea

• Norwegian – Icelandic seas

The DTM is based upon more than 7700 bathymetric survey data sets and Composite DTMs that have been gathered from 27 data providers from 18 European countries and involving 169 data originators. The gathered survey data sets can be discovered and requested for access through the Common Data Index (CDI) data discovery and access service that also contains additional European survey data sets for global waters. This discovery service makes use of SeaDataNet standards and services and have been integrated in the EMODnet portal (https://emodnet.ec.europa.eu/en/bathymetry#bathymetry-services ). The Composite DTMs are described using the Sextant Catalogue Service that makes also use of SeaDataNet standards and services. Their metadata can retrieved through interrogating the Source Reference map in the Central Map Viewing service (https://emodnet.ec.europa.eu/geoviewer/ ).

In addition, the EMODnet Map Viewer gives users wide functionality for viewing and downloading the EMODnet digital bathymetry such as:

• water depth (refering to the Lowest Astronomical Tide Datum - LAT) in gridded form

on a DTM grid of 1/8 * 1/8 arc minute of longitude and latitude (ca 230 * 230 meters)

• option to view depth parameters of individual DTM cells and references to source data

• option to download DTM in 16 tiles in different formats: EMO, EMO (without GEBCO data), ESRI ASCII, ESRI ASCII Mean Sea Level, XYZ, NetCDF (CF), RGB GeoTiff and SD

• layer with a number of high resolution DTMs for coastal regions

• layer with wrecks from the UKHO Wrecks database.

The NetCDF (CF) DTM files are fit for use in a special 3D Viewer software package which is based on the existing open source NASA World Wind JSK application. It has been developed in the frame of the EU FP7 Geo-Seas project (another sibling of SeaDataNet for marine geological and geophysical data) and is freely available. The 3D viewer also supports the ingestion of WMS overlay maps. The SD files can also be used for 3D viewing by means of the freely available iView4De(Fledermaus) software.

The original datasets themselves are not distributed but described in the metadata services, giving clear information about the background survey data used for the DTM, their access restrictions, originators and distributors and facilitating requests by users to originator.

Credit

EMODnet Bathymetry

Point of contact

Organisation name	Individual name	Electronic mail address	Role
EMODnet Bathymetry Consortium		info@maris.nl	Publisher
EMODnet Bathymetry Consortium		info@maris.nl	Author
Marine Information Service		info@maris.nl	Local service desk
Baltic Sea Hydrographic Commission		data@bshc.pro	Product manager
British Oceanographic Data Centre		enquiries@bodc.ac.uk	Product manager
Bulgarian National Oceanographic Data Centre(BGODC), Institute of Oceanology		bgodc@io-bas.bg	Product manager
Dokuz Eylul University, Institute of Marine Science and Technology			Product manager
Federal Maritime and Hydrographic Agency		webmaster@bsh.de	Product manager
Flemish Ministry of Mobility and Public Works; Agency for Maritime and Coastal Services; Coastal Division		waterwegen_kust@mow.vlaanderen.be	Product manager
Geological Survey of Ireland			Product manager
GGS Geo Consultancy		info@ggsgc.nl	Product manager
UNEP/GRID-Arendal		grid@grida.no	Product manager
Hellenic Centre for Marine Research, Institute of Oceanography (HCMR/IO)		iosecretariat@hcmr.gr	Product manager
Hydrographic Institute of the Navy		ihmesp@fn.mde.es	Product manager
IEO/Spanish Oceanographic Institute		cedo@md.ieo.es	Product manager
Ifremer		sismer@ifremer.fr	Product manager
IHPT, Hydrographic Institute		mail@hidrografico.pt	Product manager
Institute of Marine Science (ISMAR) - Bologna		responsabile@bo.ismar.cnr.it	Product manager
Institute of Marine Research (IIM-CSIC)		webmaster@iim.csic.es	Product manager
International Ocean Institute - Malta Operational Centre (University Of Malta) / Physical Oceanography Unit		ioi-moc@um.edu.mt	Product manager
Jardfeingi, the Faroe Islands Earth and Energy Directorate		jardfeingi@jardfeingi.fo	Product manager
Marine Information Service		info@maris.nl	Product manager
Marum - Center for Marine Environmental Sciences, University of Bremen		gwefer@marum.de	Product manager
National Institute of Marine Geology and Geoecology		geoecomar@geoecomar.ro	Product manager
National Institute of Engineering and Industrial Technology, Lisbon - Department of Industrial Impact Studies		info@lneg.pt	Product manager
National Oceanography Centre, Liverpool		enquiries@noc.ac.uk	Product manager
NIOZ Royal Netherlands Institute for Sea Research		dmg@nioz.nl	Product manager
Norwegian Hydrographic Service		sksk@statkart.no	Product manager
OceanWise Limited		info@oceanwise.eu	Product manager
OGS (Istituto Nazionale di Oceanografia e di Geofisica Sperimentale), Infrastructures Division		azuccolo@inogs.it	Product manager
National Institute of Oceanography and Applied Geophysics - OGS, Division of Oceanography		nodc-staff@ogs.trieste.it	Product manager
National Institute of Meteorology and Geophysics, Lisbon - Division of Marine Meteorology		info@ipma.pt	Product manager
Royal Danish Administration of Navigation & Hydrography, Oceanographic Department			Product manager
Royal Netherlands Navy Command, Hydrographic Office		pom@hydro.nl	Product manager
SC Marine Research SRL		office@marine-research.ro	Product manager
SHOM (SERVICE HYDROGRAPHIQUE ET OCEANOGRAPHIQUE DE LA MARINE)		webmaster@shom.fr	Product manager
AZTI - Tecnalia, Headquarters Pasaia(Gipuzkoa)		unknown	Product manager
Directorate General of Fisheries Management - General Secretariate of the Sea		depesmar@marm.es	Product manager
Geological Survey of Israel		ask_gsi@gsi.gov.il	Product manager
Marine Technology Unit. Mediterranean Marine and Environmental Research Centre		utmtel@utm.csic.es	Product manager
Task Group for the Extension of the Continental Shelf		emepc@emepc-portugal.org	Product manager
The Norwegian Petroleum Directorate (NPD)		postboks@npd.no	Product manager

Thèmes Sextant

• /Physical Environment/Bathymetry/Digital Terrain Model

GEMET - INSPIRE themes, version 1.0

• Elevation

Theme

• EMODnet

• seafloor depth

• ocean depth

• Digital Terrain Model

• DTM

• grid

• bathymetric data

Place

• European seas

• Azores

• Madeira

• Canary Islands

• North-East Atlantic

• Bay of Biscay

• Celtic Seas

• English Channel

• North Sea

• Norvegian Sea

• Iceland Sea

• Baltic Sea

• Mediterranean Sea

• Adriatic Sea

• Aegean Sea

• Black Sea

Stratum

• Seabed

Discipline

• Bathymetry

Cadre Réglementaire - SIMM

• Maritime Spatial Planning Directive (MSP)

• Marine Strategy Framework Directive (MSFD)

Access constraints

Creative Commons Attribution 4.0 International

Use constraints

Other restrictions

Other legal constraints

DO NOT USE FOR NAVIGATION

Spatial representation type

Grid

Distance

0.125  Arc second

Language

English

Character set

UTF8

Topic category

• Elevation

N

S

E

W

Begin date

1816-01-01T00:00:00

End date

2016-08-31T00:00:00

Reference system identifier

EPSG / WGS 84 (EPSG:4326) / 8.6

Number of dimensions

1

Cell geometry

Point

Distribution format

Name	Version
NetCDF
GeoTIFF	1.0
XYZ
ESRI ASCII
SD

OnLine resource

Protocol	Linkage	Name
WWW:LINK	https://emodnet.ec.europa.eu/geoviewer	EMODnet viewing service
DOI	https://doi.org/10.12770/18ff0d48-b203-4a65-94a9-5fd8b0ec35f6	DOI of the EMOdnet DTM 2016
WWW:LINK	https://tiles.emodnet-bathymetry.eu/	EMODnet Bathymetry WMTS service

OnLine resource

Protocol	Linkage	Name
OGC:WMS	https://ows.emodnet-bathymetry.eu/wms	emodnet:source_references

OnLine resource

Protocol	Linkage	Name
OGC:WMS	https://ows.emodnet-bathymetry.eu/wms	emodnet:mean_atlas_land

OnLine resource

Protocol	Linkage	Name
WWW:DOWNLOAD	https://downloads.emodnet-bathymetry.eu/v8/C4_2016.asc.zip	EMODnet - DTM 2016 - TILE C4 - Format ESRI ASCII
WWW:DOWNLOAD	https://downloads.emodnet-bathymetry.eu/v8/C4_2016.emo.zip	EMODnet - DTM 2016 - TILE C4 - Format EMO
WWW:DOWNLOAD	https://downloads.emodnet-bathymetry.eu/v8/C4_2016_no_gebco.emo.zip	EMODnet - DTM 2016 - TILE C4 - Format EMO (without GEBCO data)
WWW:DOWNLOAD	https://downloads.emodnet-bathymetry.eu/v8/C4_2016_rgb.tif	EMODnet - DTM 2016 - TILE C4 - Format RGB GeoTiff
WWW:DOWNLOAD	https://downloads.emodnet-bathymetry.eu/v8/C4_2016.dtm.zip	EMODnet - DTM 2016 - TILE C4 - Format NetCDF
WWW:DOWNLOAD	https://downloads.emodnet-bathymetry.eu/v8/C4_2016.xyz.zip	EMODnet - DTM 2016 - TILE C4 - Format XYZ
WWW:DOWNLOAD	https://downloads.emodnet-bathymetry.eu/v8/C4_2016.sd.zip	EMODnet - DTM 2016 - TILE C4 - Format SD

Hierarchy level

Dataset

Statement

The DTM is a grid of 1/8 * 1/8 arc minute of longitude and latitude (ca 230 * 230 meters).

Each grid cell has the following information:

- x,y coordinates

- minimum waterdepth in meters to LAT

- average waterdepth in meters to LAT

- maximum waterdepth in meters to LAT

- standard deviation of waterdepth in meters

- number of values used for interpolation over the grid cell

- interpolation flag : 1 when extrapolated from the neighbouring cells

- average waterdepth smoothed by means of a spline function in meters to LAT

- an indicator of the offsets between the average and smoothed waterdepth as a % of the waterdepth

- reference to the prevailing source of data with metadata.

Source data :

The DTM values have been determined from 3 possible sources of data:

- Bathymetric surveys : More than 14000 high resolution data sets from single and multibeam surveys, managed by 27 data centres from 18 countries and originated from 169 institutes, as referenced via the CDI Data Discovery and Access service.

- Digital Terrain Model data : 78 composite data sets produced and delivered by a number of external data providers such as Hydrographic Offices derived from their internal bathymetric database and based upon historic surveys. These are referenced via the Sextant Catalogue service

- GEBCO 2014 30” gridded data, used to complete area coverage in case there are no survey data or composite data sets available to the partners.

From these a subset has been used as input for analysing and generating the EMODnet digital terrain model (DTM).

No new data has or will be collected specifically for this project.

GEBCO (General Bathymetric Chart of the Oceans) is partner in the project and not only provides the latest GEBCO releases for filling gaps but also uses the EMODnet DTM for upgrading the GEBCO DTM for the Baltic Sea synergy takes place with the Baltic Sea Bathymetry Database project of the Baltic Sea Hydrographic Commission.

Additionnal QA/QC and DTM production details are available on the EMODnet Bathymetry portal.

Metadata

File identifier

0ffd334f-4417-40ba-af34-4046b8eeb578

Metadata language

English

Other language

Language	Character encoding
French	UTF8

Character set

UTF8

Hierarchy level

Dataset

Date stamp

2025-03-07T14:48:19.434974Z

Metadata standard name

ISO 19115:2003/19139 - SEXTANT

Metadata standard version

1.0

Metadata author

Organisation name	Individual name	Electronic mail address	Role
Ifremer		sismer@ifremer.fr	Local service desk