Lake Ice Stage of Development describes the ages and thicknesses of lake ice ('So,Sa,Sb,Sc and Sd').
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Lake Ice Stage of Development may be reported as a single enumerated value or as a set of values of thicknesses. The set of values is represented as an S-57 List (or repeating) attribute.Partial concentration Stage of Development is reported in order from the thickest to the thinnest. The following categories are defined:So - Stage of Development of ice thicker than Sa but having a concentration of less than 1/10.Sa - Thickest/oldest; Stage of Development of ice concentration Ca.Sb - Second thickest/oldest; Stage of Development of ice concentration Cb.Sc - Third thickest/oldest; Stage of Development of ice concentration Cc.Sd - Stage of Development of any other remaining class. Missing values are represented by the absence of any value of the attribute that in the ISO 8211 encoding of S-57 would be adjacent commas
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