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EA:  SOUNDING_DATUM_TYPE

Status: STD 2005/06/07
Code: 1304
Concept definition: The type of a <SOUNDING_DATUM>.
 
Attribute value type: ENUMERATION
Reference type: IR
Reference: [S57A, Attribute: VERDAT]
Supplemental references:  
Enumerants (presented in a natural order)
Status Attribute label Enumerant label Concept definition Code Ref type ▾ Reference Supplemental references
STD
2005/06/07		 SOUNDING_DATUM_TYPE INDIAN_SPRING_HIGH_WATER A <<TIDAL_DATUM>> approximating the level of the mean of the <<<HGHR_HIGH_WATER>>> at <SPRING_TIDE>s; Indian spring high water. This <<TIDAL_DATUM>> approximates the highest water level observed at a <LOCATION> and is usually above that of the <<<HGHR_HIGH_WATER>>> at <SPRING_TIDE>s. 16 IR [FACC, Annex B, VDC:30]  
STD
2005/06/07		 SOUNDING_DATUM_TYPE INDIAN_SPRING_LOW_WATER A <<TIDAL_DATUM>> approximating the level of the mean of the <<<LOWER_LOW_WATER>>> at <SPRING_TIDE>s; Indian spring low water. This <<TIDAL_DATUM>>, which is also known as Indian tidal plane, approximates the lowest water level observed at a <LOCATION> and is usually below that of the <<<LOWER_LOW_WATER>>> at <SPRING_TIDE>s. 17 IR [S57A, Attribute, VERDAT:8] [FACC, Annex B, VDC:4]
STD
2005/06/07		 SOUNDING_DATUM_TYPE LOW_WATER_SPRINGS A level approximating that of <<<MEAN_LOW_SPRINGS>>>; low water springs. 20 IR [S57A, Attribute, VERDAT:9] [FACC, Annex B, VDC:93]
STD
2005/06/07		 SOUNDING_DATUM_TYPE LOWER_LOW_WATER The lowest of the low waters (or single low water) of any specified tidal day due to the declinational effects of the <MOON> and <SUN>, where low water is the minimum height reached by a falling <TIDE>; lower low water [TCG, "lower low water (LLW)"]. For tidal datum computational purposes, the minimum height is not considered a low water unless it contains a tidal low water. 22 IR [FACC, Annex B, VDC:6]  
STD
2005/06/07		 SOUNDING_DATUM_TYPE MEAN_HGHR_HIGH_SPRINGS The mean height of <<<HGHR_HIGH_WATER>>> at <SPRING_TIDE>s at a <LOCATION>; mean higher high water springs. 26 IR [FACC, Annex B, VDC:24]  
STD
2005/06/07		 SOUNDING_DATUM_TYPE MEAN_HIGH_NEAPS The mean height of the <<<HIGH_WATER>>>s of the <NEAP_TIDE>; mean high water neaps, neap high water, or high water neaps [TCG, "neap tides or tidal currents"]. 28 IR [FACC, Annex B, VDC:8]  
STD
2005/06/07		 SOUNDING_DATUM_TYPE MEAN_LOW_NEAPS The mean height of the lowest <<TIDE_LEVEL>>s of the <NEAP_TIDE>; mean low neaps [TCG, "neap tides or tidal currents"]. 31 IR [FACC, Annex B, VDC:12]  
STD
2005/06/07		 SOUNDING_DATUM_TYPE NEARLY_LOWEST_LOW_WATER A level approximating the lowest water level observed at a <LOCATION>, usually equivalent to <<<INDIAN_SPRING_LOW_WATER>>>; nearly lowest low water. 42 IR [S57A, Attribute, VERDAT:11] [FACC, Annex B, VDC:95]
STD
2005/06/07		 SOUNDING_DATUM_TYPE EQUINOCTIAL_SPRING_LOW-
_WATER		 The level of <<<LOW_WATER_SPRINGS>>> near the time of an equinox; equinoctial spring low water. 7 PR [S57A, Attribute, VERDAT:22]  
STD
2005/06/07		 SOUNDING_DATUM_TYPE HGHR_HIGH_LARGE_TIDE The mean of the <<<HIGHEST_HIGH_WATER>>>s, one from each of 19 years of observations; higher high water large tide. 8 PR [S57A, Attribute, VERDAT:28]  
Group membership:

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