S183400400_LEVE_BATHY English utf8 LEVES_BATHY_AVANT_1970.xml dataset Jeu de données Shom +33 (0)2 56.31.23.12 +33 (0)2 56.31.25.80 13, rue du Chatellier CS92803 BREST CEDEX 2 29228 France data-support@shom.fr https://www.shom.fr/ 2025-11-25T16:03:10 ISO 19115:2003/19139 1.0 utf8 surface 2 point false WGS 84 (EPSG:4326) Bathymetric dataset S183400400 Levé bathymétrique S183400400 S183400400 2025-10-31 revision http://www.shom.fr/BATHYMETRIE/LEVES_BATHY_AVANT_1970/S183400400 Shom +33 (0)2 56.31.23.12 +33 (0)2 56.31.25.80 13, rue du Chatellier CS92803 BREST CEDEX 2 29228 France bps@shom.fr http://www.shom.fr/ originator Bathymetric datasets are an extraction of surveys belonging to the Shom public database. For depth up to 50m, the vertical precision of soundings varies from 30cm to 1m and the horizontal precision varies from 1 to 20m. In deep ocean, the vertical precision is mainly around 1 or 2% of the bottom depth. It is sometimes more, it depends on the technology used. The data are referenced to ZH which is assimilated to LAT. Data are corrected for sound velocity variations. Data are acquired during the campaign S183400400 (http://dx.doi.org/10.17183/S183400400). // Instruments: Plomb de sonde // Number of soundings: 3124 Les levés bathymétriques sont des semis de sondes issus de levés provenant de la base des données diffusables par le Shom. Pour les fonds jusqu à 50m, la précision verticale des sondes varie de 30cm à 1m et la précision planimétrique de 1 à 20m. Au-delà, dans les grands fonds, la précision verticale est majoritairement de l ordre de 1 à 2% de la profondeur du fond. Parfois, elle est plus élevée selon la technologie utilisée. Les données sont référencées au ZH qui est assimilé à la Plus Basse Mer Astronomique (PBMA). Les données sont corrigées des variations de la célérité du son dans l eau. Les données proviennent de la campagne S183400400 (http://dx.doi.org/10.17183/S183400400). // Instruments: Plomb de sonde // Nombre de sondes: 3124 Shom +33 (0)2 56.31.23.12 +33 (0)2 56.31.25.80 13, rue du Chatellier CS92803 BREST CEDEX 2 29228 France bps@shom.fr http://www.shom.fr/ custodian asNeeded https://services.data.shom.fr/static/imagettes/LEVES_BATHY_AVANT_1970_PACK_DL/S183400400.png thumbnail png Bathymetry and Elevation Bathymétrie et altitude parameter SeaDataNet Parameter Discovery Vocabulary P02 2022-05-04 revision 120 http://www.seadatanet.org/urnurl/SDN:P02 plummets plomb de sonde instrument SeaDataNet device categories L05 2021-06-15 revision 81 http://www.seadatanet.org/urnurl/SDN:L05 research vessel navire océanographique platform_class SeaVoX Platform Categories L06 2021-03-25 revision 17 http://www.seadatanet.org/urnurl/SDN:L06 Bathymetric Dataset are available under Open License (version 2.0 - April 2017), Etalab mission Les levés bathymétriques sont diffusés sous Licence ouverte (version 2.0 d'avril 2017), définie par la mission Etalab Quote the source as follows: "Shom, bathymetric dataset. DOI: http://dx.doi.org/10.17183/S183400400" Citer la source de la manière suivante: "Shom, levé bathymétrique. DOI: http://dx.doi.org/10.17183/S202001900" Product not certified for navigation Ne pas utiliser pour la navigation Open License (version 2.0 - April 2017), Etalab mission Licence ouverte (version 2.0 d'avril 2017), définie par la mission Etalab Open License (version 2.0 - April 2017), Etalab mission Licence ouverte (version 2.0 d'avril 2017), définie par la mission Etalab No public access restrictions. Pas de restriction d'accès public. 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49.801718699999995 0.4313122 49.801176999999996 0.432636887446944 49.80094405670414 0.4288268 49.806074699999996 0.42835249999999997 49.806537 0.4247438903533642 49.80907581385502 0.9502028504113879 49.96652890375161 0.9485389999999999 49.961086599999994 0.948448 49.960448 0.9485566 49.959812199999995 0.9509116194514554 49.952806998807596 0.9502028504113879 49.96652890375161 0.9511952923850832 49.9909443721145 0.9510253 49.990797099999995 0.9500902999999999 49.9906626 0.9490341 49.990185499999995 0.9483957 49.989218199999996 0.9474562 49.986200399999994 0.9473693 49.9857559 0.9466369 49.9770815 0.9467922 49.9760984 0.9501175193334471 49.968180929833565 0.9495566999999999 49.979038499999994 0.9511952923850832 49.9909443721145 0.9482659106337271 50.00713579108691 0.9510299 49.997679299999994 0.9506380999999999 49.996420799999996 0.9506235999999999 49.9952295 0.9512636 49.994224599999995 0.9515845698947317 49.99394655537368 0.9515775 49.9946051 0.9501178 50.0037555 0.9497289 50.004794 0.9482659106337271 50.00713579108691 0.0583737 49.356783799999995 0.061163999999999996 49.3593486 0.0635597 49.3612088 0.0713106 49.3647883 0.07849779999999999 49.3653238 0.07939969999999999 49.365041999999995 0.07813139999999999 49.3638864 0.0757357 49.3624772 0.07181799999999999 49.3603351 0.0668574 49.3577139 0.060403 49.3557973 0.0583737 49.356783799999995 1834-01-01T00:00:00 1834-12-31T00:00:00 -48.729999542236328 34.759998321533203 vertical-crs-id-0 not known vertical-cs-01 coordsys-axis0id Z down 13.695294501839465 http://www.seadatanet.org/urnurl/SDN:L11::D01 Lowest Astronomical Tide not known XYZ ASCII 1.0 Shom +33 (0)2 56.31.23.12 +33 (0)2 56.31.25.80 13, rue du Chatellier CS92803 BREST CEDEX 2 29228 France bps@shom.fr http://diffusion.shom.fr/ distributor 0.085999999999999993 https://diffusion.shom.fr WWW:LINK-1.0-http--link Shom marketplace to download surveys Espace de diffusion du Shom pour télécharger les levés Shom marketplace to download surveys Espace de diffusion du Shom pour télécharger les levés https://data.shom.fr WWW:LINK-1.0-http--link Shom Geoportal Portail d information géographique du Shom https://services.data.shom.fr/INSPIRE/wms/v?service=WMS&request=GetCapabilities&version=1.3.0 OGC Web Map Service Service de consultation LEVES_BATHY_AVANT_1970_WMSV Access point WMS Access point WMS http://www.sdn-taskmanager.org/ WWW:LINK-1.0-http--link SeaDataNet web data access with registration dataset Uncertainty_Horizontal 2019-12-05 publication 200 true Uncertainty_Vertical 2019-12-05 publication 1 true Bathymetric datasets, collected before 1970, are historical surveys acquired with leadlines (and single-beam echosounders after 1930-1940). Quality controls and qualification, conducted by the Shom, on these datasets are not exhaustive. Datasets may present significant uncertainties and errors may remain. Ask the data centre for details. Levés bathymétriques collectés avant 1970, données historiques principalement acquises au plomb de sondes (et au sondeur monofaisceau après 1930-1940). Le contrôle et la qualification conduits par le Shom sur ces données ne sont pas exhaustifs. Les données peuvent présenter des incertitudes importantes et des erreurs peuvent subsister. Metadata publicly available Métadonnées publiques et gratuites