Chart of the Portuguese continental shelf sediments

Simplified map of the superficial sediments of the Portuguese continental shelf, based on available information of marine charts and various surveys.Preliminary map preparation involved scanning, georeferencing and digitizing of pre-existing base maps from the Portuguese Hydrographic Institute and harmonization with other published and non-published cartographic information. Samples of soft bottom shelf sediments from nearly 500 sites, collected in the scope of the MeshAtlantic, RENSUB and ACOSHELF projects, were analyzed for grain-size and total organic matter.

Alternate title: PT001000

Alternate title: PT001001

Alternate title: PT001002

Alternate title: PT001003

Alternate title: PT001004

Alternate title: PT001005

Alternate title: PT001006

Date (Creation): 2011-05-20T15:31:00

Presentation form: Digital map

Purpose: Research

Status: Completed

Point of contact

Organisation name	Individual name	Electronic mail address	Role
University of Aveiro	Ant├│nio Silva & Rosa Freitas	antoniojsilva@ua.pt rosafreitas@ua.pt	Author

Maintenance and update frequency: As needed

Place

Portuguese continental shelf

Theme

Marine habitat mapping

GEMET - INSPIRE themes, version 1.0

Sediments map

Access constraints: Copyright

Spatial representation type: Vector

Denominator: 2100000

Language: eng

Character set: UTF8

Begin date: 1984-01-01T10:00:00

End date: 2010-06-15T16:58:00

Vertical extent

Minimum value: 0

Maximum value: -500

Supplemental Information: The classification system used was the FOLK-MESH ATLANTIC used in the MeshAtlantic project.

Reference system identifier: WGS 1984

Distribution format

Name	Version
Shapefile	ESRI ArcGIS

OnLine resource

Protocol	Linkage	Name
WWW:LINK-1.0-http--link
OGC:WMS	https://ows.emodnet-seabedhabitats.eu/geoserver/emodnet_view_maplibrary/wms?	pt001002
OGC:WFS	https://ows.emodnet-seabedhabitats.eu/geoserver/emodnet_open_maplibrary/wfs?	pt001002
WWW:LINK-1.0-http--link	https://files.emodnet-seabedhabitats.eu/data/EMODnetSBHsurvey_PT001002.zip	EMODnet Seabed Habitats download

Hierarchy level: Dataset

Conformance result

Title: Chart of the Portuguese continental shelf sediments

Date (Creation): 2011-05-20

Explanation: ┬À a literature review of the existing information on the sedimentary distribution on the

Portuguese continental shelf;

┬À scanning of pre-existing and published maps by the Portuguese Hydrographic

Institute ÔÇô Instituto Hidrogr├ífico (IH), 1:500.000 scale, with the distribution of the

surficial sediments on the Portuguese continental shelf;

┬À georreferencing the obtained raster images to the world WGS-84 geographic

coordinate system;

┬À vectorization of the Portuguese mainland coastline and the bathymetric curves of

20m, 50m, 100m, 200m and 500m;

┬À projection of the sedimentological data (grain size) obtained in the oceanographic

campaigns associated with the project and subsequent classification within the

system FOLK MESH-ATLANTIC, using the tool GRAPHERTM 7 (Golden Software,

Inc.);

┬À representation and analysis of the sediment samples from the Portuguese

continental shelf in the map produced in ArcGIS;

┬À harmonization of sedimentological data available in the literature reviewed,

particularly in the maps published by IH, with the classification system adopted in

FOLK MESH-ATLANTIC project. This phase required in some cases,

georreferencing new maps of interest;

┬À vectorization and mapping the sedimentological maps published in the IHÔÇÖs ÔÇ£S├®rie

PescaÔÇØ and "Carta dos Sedimentos Superficiais da Plataforma Continental

Portuguesa";

┬À construction of a synthetic base map of the sediment distribution on the Portuguese

continental shelf. For this purpose it was necessary to consider the previous scientific

papers published on the sedimentological data of interest to the project;

┬À cataloguing of vector data (metadata) in "GeoNetwork OpensourceÔÇØ platform using a

template according to the ISO19139 standard.