Navn;Beskrivelse;Kodeverdi;Navn engelsk;Beskrivelse engelsk;Kodeverdi engelsk
equinoctialSpringLowWater;;equinoctialSpringLowWater;; The level of low water springs near the time of an equinox.  -- Description -- SOURCE [DFDD].;
higherHighWater;;higherHighWater;; The highest of the high waters (or single high water) of any specified tidal day due to the declination A1 effects of the moon and sun.  -- Description -- SOURCE [DFDD].;
higherHighWaterLargeTide;;higherHighWaterLargeTide;; The average of the highest high waters, one from each of 19 years of observations.  -- Description -- SOURCE [DFDD].;
highestAstronomicalTide;;highestAstronomicalTide;; The highest tidal level, which can be predicted to occur under average meteorological conditions and under any combination of astronomical conditions.  -- Description -- SOURCE [DFDD].;
highestHighWater;;highestHighWater;; The highest water level observed at a location.  -- Description -- SOURCE [DFDD].;
highWater;;highWater;; The highest level reached at a location by the water surface in one tidal cycle.   -- Description -- SOURCE [DFDD].  NOTE When used on inland waters it is generally defined as a level that the daily mean water level exceeds less than 5 percent of the time.;
highWaterSprings;;highWaterSprings;; An arbitrary level, approximating that of mean high water springs.  -- Description -- SOURCE [DFDD].;
indianSpringHighWater;;indianSpringHighWater;; A tidal surface datum approximating the level of the mean of the higher high water at spring tides.  -- Description -- SOURCE [DFDD].  NOTE This tidal datum approximates the highest water level observed at a location and is usually above that of the higher high water at spring tides.;
indianSpringLowWater;;indianSpringLowWater;; A tidal surface datum approximating the level of the mean of the lower low water at spring tides.  -- Description -- SOURCE [DFDD].  NOTE This tidal datum approximates the lowest water level observed at a location and is usually below that of the lower low water at spring tides.;
localDatum;;localDatum;; An arbitrary datum defined by an authority of a local harbour, from which levels and tidal heights are measured by that authority.  -- Description -- SOURCE [DFDD].;
lowerLowWater;;lowerLowWater;; The lowest of the low waters (or single low water) of any specified tidal day due to the declination A1 effects of the moon and sun.  -- Description -- SOURCE [DFDD].;
lowerLowWaterLargeTide;;lowerLowWaterLargeTide;; The average of the lowest low waters, one from each of 19 years of observations.  -- Description -- SOURCE [DFDD].;
lowestAstronomicalTide;;lowestAstronomicalTide;; The lowest tide level that can be predicted to occur under average meteorological conditions and under any combination of astronomical conditions.  -- Description -- SOURCE [DFDD].;
lowestLowWater;;lowestLowWater;; An arbitrary level conforming to the lowest tide observed at a location, or somewhat lower.  -- Description -- SOURCE [DFDD].;
lowestLowWaterSprings;;lowestLowWaterSprings;; An arbitrary level conforming to the lowest water level observed at a location at spring tides during a period shorter than 19 years.  -- Description -- SOURCE [DFDD].;
lowWater;;lowWater;; An approximation of mean low water adopted as the reference level for a limited region, irrespective of better determinations later.  -- Description -- SOURCE [DFDD].  NOTE Used mostly in harbour and river engineering. Used in inland waters. It is generally defined as a level which the daily mean water level would fall below less than 5 percent of the time and by no more than 0.2 metres during the navigation season. A single level surface is usually chosen as the low water datum for a whole lake. On a river, low water datum is a sloping surface, which approximates the surface of the river at a low state.;
lowWaterDatum;;lowWaterDatum;; An approximation of mean low water that has been adopted as a standard reference for a limited area.  -- Description -- SOURCE [Based on DFDD].  NOTE 1 It is retained for an indefinite period regardless of the fact that it may differ slightly from a better determination of mean low water from a subsequent series of observations.  NOTE 2 Used primarily for river and harbor engineering purposes.;
lowWaterSprings;;lowWaterSprings;; A level approximating that of mean low water springs.  -- Description -- SOURCE [DFDD].;
meanHigherHighWater;;meanHigherHighWater;; The average height of higher high waters at a location over a 19-year period.  -- Description -- SOURCE [DFDD].;
meanHigherHighWaterSprings;;meanHigherHighWaterSprings;; The average height of higher high water at spring tides at a location.  -- Description -- SOURCE [DFDD].;
meanHigherLowWater;;meanHigherLowWater;; The average of the higher low water height of each tidal day observed over a National Tidal Datum Epoch.  -- Description -- SOURCE [DFDD].  NOTE For stations with shorter series, comparison of simultaneous observations with a control tide station is made in order to derive the equivalent datum of the National Tidal Datum Epoch.;
meanHighWater;;meanHighWater;; The average height of all high waters at a location over a 19-year period.  -- Description -- SOURCE [DFDD].;
meanHighWaterNeaps;;meanHighWaterNeaps;; The average height of the high waters of the neap tide.  -- Description -- SOURCE [DFDD].;
meanHighWaterSprings;;meanHighWaterSprings;; The average height of the high waters of spring tides.  -- Description -- SOURCE [DFDD].;
meanLowerHighWater;;meanLowerHighWater;; The average of the lower high water height of each tidal day observed over a National Tidal Datum Epoch.  -- Description -- SOURCE [DFDD].  NOTE For stations with shorter series, comparison of simultaneous observations with a control tide station is made in order to derive the equivalent datum of the National Tidal Datum Epoch.;
meanLowerLowWater;;meanLowerLowWater;; The average height of the lower low waters at a location over a 19-year period.  -- Description -- SOURCE [DFDD].;
meanLowerLowWaterSprings;;meanLowerLowWaterSprings;; The average height of lower low water at spring tides at a location.  -- Description -- SOURCE [DFDD].;
meanLowWater;;meanLowWater;; The average height of all low waters at a location over a 19-year period.  -- Description -- SOURCE [DFDD].;
meanLowWaterNeaps;;meanLowWaterNeaps;; The average height of the low waters of the neap tide.  -- Description -- SOURCE [DFDD].;
meanLowWaterSprings;;meanLowWaterSprings;; The average height of the low waters of spring tides.  -- Description -- SOURCE [DFDD].;
meanSeaLevel;;meanSeaLevel;; The average height of the sea at a tide station measured from a fixed predetermined reference level.  -- Description -- SOURCE [DFDD].  NOTE Usually determined from hourly height readings, for all stages of the tide, over a 19-year period.;
meanTideLevel;;meanTideLevel;; The arithmetic mean of mean high water and mean low water.  -- Description -- SOURCE [DFDD].;
meanWaterLevel;;meanWaterLevel;; The average of all hourly water levels over the available period of record.  -- Description -- SOURCE [DFDD].;
nearlyHighestHighWater;;nearlyHighestHighWater;; An arbitrary level approximating the highest water level observed at a location, usually equivalent to the high water springs.  -- Description -- SOURCE [DFDD].;
nearlyLowestLowWater;;nearlyLowestLowWater;; A level approximating the lowest water level observed at a location, usually equivalent to Indian spring low water.  -- Description -- SOURCE [DFDD].;
tropicHigherHighWater;;tropicHigherHighWater;; The highest of the high waters (or single high water) of the tides occurring semimonthly when the effect of the Moon's maximum declination is greatest.  -- Description -- SOURCE [DFDD].  NOTE At these times there is a tendency for an increase in the diurnal range.;
tropicLowerLowWater;;tropicLowerLowWater;; The lowest of the low waters (or single low water) of the tides occurring semimonthly when the effect of the Moon's maximum declination is greatest.  -- Description -- SOURCE [DFDD].  NOTE At these times there is a tendency for an increase in the diurnal range.;