The average height of the surface of the sea at a tide station for all stages of the tide over a 19-year period, usually determined from hourly height readings measured from a fixed predetermined reference level.
Definition Source :
IHO Hydrographic Dictionary, English
Similarity to Source :
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Proposed Change :
Add Alias. Amend definition. Add definition source, reference and similarity. Add INT1 and S-4 references.
On behalf of the IHO Member States, the International Hydrographic Bureau would like to thank Korea Hydrographic and
Oceanographic Agency(KHOA) of the Republic of Korea for giving active support in the development of the S-100 GI Registry