Environmental Data Coding Specifcation        ISO IEC LogosRight Title Graphic
Home Browse Search Download Submissions FAQs Contact


Status: STD 2005/06/07
Code: 1525

Concept definition: The designation of a <VERTICAL_DATUM>; vertical datum identifier.
Attribute value type: ENUMERATION
Reference type: IR
Reference: [GMCG]
Supplemental references:  

Enumerants (presented in a natural order)
Status Attribute label Enumerant label ▾ Concept definition Code Ref type Reference Supplemental references
The geopotential surface defined by the WGS 84 Earth Gravitational Model 1996 that is closely associated with the mean ocean surface. 1 PR [83502T, Section 6]  
VERTICAL_DATUM_IDENTIFIER MEAN_SEA_LEVEL A continuous surface over the oceans (or its hypothetical extension under the land masses) defined by the mean of sea level surfaces approximated and observed over 19 years; mean sea level (MSL). 2 PR [BOWD, Section 913]  
VERTICAL_DATUM_IDENTIFIER WGS_1984_ELLIPSOID WGS 1984 Ellipsoid. 3 PR [83502T, Section 3]  
VERTICAL_DATUM_IDENTIFIER WGS_1984_GEOID The geopotential surface defined by the WGS 1984 Earth Gravity Model that is closely associated with the mean ocean surface; WGS 1984 Geoid. 4 PR [83502T, Section 6]  

Group membership:

In addition to the status and date information for each entry, a colour coding scheme highlights the database holding to which an entry belongs. The following highlight colours are used:

  • white - the entry is in the standard
  • yellow - the entry has been added to the register
  • pink - the entry has been submitted for inclusion in the register, but it is not approved
  • cyan - a deprecated entry that was originally either in the standard or was added to the register, but has since been deprecated

The following icons are used to identify items that have figures, modifications and/or clarification notes:

  • F n - has Figures and, if more than one figure, n figures
  • M - has Modifications
  • C - has Clarifications

Bottom Bar Graphic

 Send mail to webmaster with questions or comments about this web site.