Carte gravimétrique du bassin du Tchad. Scale of 1:3 000 000. Date of publication: 1968.

1. Carte gravimétrique du bassin du Tchad : anomalies de Bouguer (d=2,67). / Louis, P.; Buffard Morel, J. M. (ill.); Scale of 1:3 000 000. Date of publication: 1968. (file: 01758RC_IRD_-AF_GPIS_1968_3000000_IRD_-AF_GPIS_1968_3000000.tif)

2. Carte gravimétrique du bassin du Tchad : anomalies isostatiques : hypothèse d'Airy (30 km). / Louis, P.; Buffard Morel, J. M. (ill.); Scale of 1:3 000 000. Date of publication: 1968. (file: 01759RC_IRD_-AF_GPIS_1968_3000000_IRD_-AF_GPIS_1968_3000000.tif)

Date (Publication): 1968-01-01

Citation identifier: IRD_-AF_GPIS_1968_3000000

Code: 10.23708/1529efa6-4d56-47d7-9062-505485cf6337

Credit: The region Île-de-France, under the project NumeriSud, supported the action to transforme around 2800 maps that are conserved at the Institut de recherche pour le développement (IRD) library in Bondy into a standard coordinate system. The transformation of the images has been done by Global Mapping Resources (South Africa) under the supervision of R. Zaiss (éditeur) 2014.

Status: Completed

Point of contact

Organisation name	Individual name	Electronic mail address	Role
Institut de recherche pour le développement (IRD)	Production cartographique IRD	ist-contact@ird.fr	Point of contact
	Louis, P.		Author
	Buffard Morel, J. M. (ill.)		Author
	ORSTOM, Office de la recherche scientifique et technique outre-mer		editor

Maintenance and update frequency: Not planned

Mots-clés Sphaera

Anomalie isostatique

Vocabulaire thématique de Sphaera

Vocabulaire multidisciplinaire de Horizon

Anomalie de Bouguer

Thématiques NumeriSud

GEMET - INSPIRE themes, version 1.0

Geology

GEMET

geophysics

Geounits

Africa
Middle Africa
Northern Africa
Western Africa
Cameroon
Central African Republic
Chad
Libya
Niger
Nigeria

Theme

isostasy
thematic map

Keywords

project NumeriSud
national coverage

Use limitation: Licence : CC-BY-NC-SA

Access constraints: licence

Classification: Unclassified

Spatial representation type: Grid

Denominator: 3000000

Language: Français

Character set: UTF8

Topic category

Geoscientific information

Begin date: 1968-01-01

End date: 1968-12-31

Supplemental Information: Publication(s):

Louis, P. (1968): Contribution géophysique à la connaissance géologique du bassin du lac Tchad. Paris (FRA) : ORSTOM, Office de la recherche scientifique et technique outre mer.

Reference system identifier: EPSG / 4326 / 7.9

Distribution format

Name	Version
GeoTIFF	1.0

Distributor contact

Organisation name	Individual name	Electronic mail address	Role
DataSuds-geo			Publisher

OnLine resource

Protocol	Linkage	Name
OGC:WMS	https://datasuds-geo.ird.fr/geoserver/wms	sphaera_ws:01758RC_IRD_-AF_GPIS_1968_3000000_IRD_-AF_GPIS_1968_3000000
WWW:DOWNLOAD:GeoTIFF	https://datasuds-geo.ird.fr/geoserver/ows?service=WCS&version=2.0.1&request=GetCoverage&coverageId=01758RC_IRD_-AF_GPIS_1968_3000000_IRD_-AF_GPIS_1968_3000000
WWW:LINK-1.0-http--related	https://www.documentation.ird.fr/hor/fdi:04616	Notice explicative ou autre ouvrage

OnLine resource

Protocol	Linkage	Name
OGC:WMS	https://datasuds-geo.ird.fr/geoserver/wms	sphaera_ws:01759RC_IRD_-AF_GPIS_1968_3000000_IRD_-AF_GPIS_1968_3000000
WWW:DOWNLOAD:GeoTIFF	https://datasuds-geo.ird.fr/geoserver/ows?service=WCS&version=2.0.1&request=GetCoverage&coverageId=01759RC_IRD_-AF_GPIS_1968_3000000_IRD_-AF_GPIS_1968_3000000
WWW:LINK-1.0-http--related	https://www.documentation.ird.fr/hor/fdi:04616	Notice explicative ou autre ouvrage

OnLine resource

Protocol	Linkage	Name
DOI	https://doi.org/10.23708/1529efa6-4d56-47d7-9062-505485cf6337	Digital Object Identifier (DOI)

Hierarchy level: Dataset

Statement: 1. Scanning to tif format, 256 colors, 250dpi.

2. Georeferencing and if possible reprojection to WGS84 (Longitude / Latitude).

3. Clipping and mosaicing of map sheets(s).

4. Export ECW format.

5. ECW to GeoTIFF format conversion.

Metadata

File identifier: 1529efa6-4d56-47d7-9062-505485cf6337 XML

Metadata language: English

Character set: UTF8

Hierarchy level: Dataset

Hierarchy level name: dataset

Date stamp: 2024-02-13T19:26:08.845716Z

Metadata standard name: ISO 19115:2003/19139

Metadata standard version: 1.0

Metadata author

Organisation name	Individual name	Electronic mail address	Role
Institut de recherche pour le développement (IRD)	Service de l'Information Scientifique et Technique (IST) IRD	ist-contact@ird.fr	Point of contact
Institut de recherche pour le développement (IRD)	IRD		Resource provider