BathyElli v2.1 HAT surface

The BathyElli v2.1 HAT surface is a realisation of the ellipsoidal height of the Highest Astronomical Tide (HAT).

The HAT realised by the BathyElli v2.1 HAT surface is expressed at the reference date of 2000/01/01.

The HAT realised by the BathyElli v2.1 HAT surface is expressed by its ellipsoidal height in the legal geodetic datum according to the decrees n°2000-1276 and 2006-272. For metropolitan France, the legal geodetic datum is RGF93 v2 and the associated ellipsoid GRS80.

The difference between RGF93 v2 and the latest realisation of ITRS or the latest realisation of WGS84 is less than a few meters. For applications that do not require an uncertainty of better than a few metres on the horizontal, no change of realisation of the geodetic system is necessary.

This product covers the intersection between the Shom tidal model and the different tidal zones of metropolitan France.

Citation proposal
Shom (2023) . BathyElli v2.1 HAT surface. https://services.data.shom.fr:/geonetwork/srv/api/records/BATHYELLI_2_1_PHMA_ell.xml

Simple

Date ( Publication ): 2023-04-07

Edition: Edition 2.1

Identifier: http://www.shom.fr/BATHYMETRIE/BATHYELLI_2_1_PHMA_ell

Author

Shom

13 rue du Chatellier

BREST

29200

France

Keywords

bathyelli
vertical reference
Highest Astronomical Tide (HAT)
ellipsoide
ellipsoidally referenced survey
compensation surface
open data

Use limitation: Data may be freely used providing that the source is mentioned as follows "Shom, 2023. BATHYELLI 2.1 surfaces"

Use limitation: Product not certified for navigation

Use limitation: Data may be freely used providing that the source is mentioned as follows "Shom, 2023. BATHYELLI 2.1 surfaces"

Use limitation: Product not certified for navigation

Access constraints: License

Use constraints: Other restrictions

Other constraints: Open licence Etalab v. 2.0 avril 2017.

Access constraints: Other restrictions

Other constraints: Pas de restriction d'accès public. No public access restrictions.

Classification: Unclassified

Spatial representation type: Vector

Metadata language: fre French

Character set: utf8 UTF8

Topic category

Oceans

Distribution format

glhi
(
inapplicable
)

Specification

longitude latitude hauteur_ellipsoidale incertitude
7z
(
9.20
)

Point of contact

Shom

OnLine resource

Shom geoportal

OnLine resource

Shom distribution space

OnLine resource

BATHYELLI_ZH_PYR_PNG_3857_WMSR

Surface BathyElli v2.1 ZH

OnLine resource

BATHYELLI_ZH_BDD_WMSV

Surface BathyElli v2.1 ZH

OnLine resource: Download service BathyElli v2.1 HAT surface

Hierarchy level: Dataset

Conformance result

Date ( Publication ): 2010-11-23

Explanation: Information sur la conformité au règlement d'interopérabilité des séries et des services de données géographiques.

Pass: true

Statement: This product was generated from altimetry models, GNSS surveys and tidal measurements, tidal characteristics provided by the tidal models and the definition of the Hydrographic Zero (Chart Datum) in the reference ports of each tidal zone and a concordance relationship to perform its propagation.