Hammerfest 040/021 RLR(1964) is 9.8m below BM U3N23
Documentation added 1993-10-06
Data up to 1986 supplied by authority Statens Kartverk
Documentation added 1995-03-30
Tide gauge network modernised, new equipment installed in 1990
Documentation added 2009-01-28
Following the input of revised data values station made Metric awaiting datum information.
Documentation added 2009-04-06
2007/8 mean sea level values entered as METRIC only awaiting confirmation of a datum query.
Documentation added 2009-10-27
The Norwegian Mapping Authority have revised their datasets The benchmark reference for Hammerfest is now U3 N25 which is 8.655m above TGZ. As a result RLR was re-calculated using 2008 for the RLR year. The revised RLR factor is now 5.045m. RLR (2008) is 13.7m below TGBM U3 N25
Documentation added 2009-10-29
The PSMSL dataset begins in Jan 1957. Apparently there is earlier data on the Norwegian database but according to the site sheet the data before 1957 should not be used in any analysis.
Documentation added 2010-08-04
There is a datum problem with Hammerfest data for 1970. Because of this the data has been 'switched off' within the database. This period of data does not appear on the Norwegian website.
Documentation added 2012-09-05
For information on sea level change along the Norwegian coast see paper "Contributions to sea level variability along the Norwegian coast for 1960-2010" by K. Richter, J.E.O. Nilsen, and H. Drange.
Documentation added 2013-07-15
The Norwegian authority has now confirmed that the data for Hammerfest for 1970 is missing from their database. They have asked PSMSL not to display this data.
Norwegian Mapping Authority Hydrographic Service Po. Box 60 4001 Stavanger