Item Type : Simple Attribute
Domain : IHO Hydro
AlphaCode : VALMAG
Simple AttributeName: Value of Magnetic Variation
Alias : VALMAG; Variation; Magnetic Declination
CamelCase : valueOfMagneticVariation
Data Type : real
Definition : The angle between the magnetic and geographical meridians at any place, expressed in degrees east or west to indicate the direction of magnetic north from true north.
Reference : http://iho-ohi.net/S32/engView.php?page=10&quick_filter=variation&quick_filter_operator=Equals
Definition Source : IHO Hydrographic Dictionary, English
Similarity to Source : Identical
Int1 :
S4 :
Remarks : A positive value; that is, unsigned, indicates variation in an easterly direction and a negative value indicates variation in a westerly direction.
Management Details
Proposal Type : Supersession
Submitting Organization : IHO Secretariat
Proposed Change : Standardize Item Name. Amend definition. Add definition source, reference and similarity. Amend remark.
Justification : Standardization of Register content.
Proposed : 2019-12-17
Accepted :
Amended : 2019-12-18
Successor : -
Predecessor : VALMAG