Institute of Marine Research Fixed coastal stations - Norway
Original (non-English) name
Faste hydrografiske stasjoner
Acronym
Citation
Abstract
In the period between 1935 and 1947, the Norwegian Directorate of Fisheries' Institute of Marine Research established 8 permanent hydrographic stations from Lista to the North Cape. The purpose was to establish a long-term series for monitoring the coast and sea climate. At all stations, the water temperature and salinity are measured at the selected measuring depth. Standard measuring depths at the stations are: 0 m, 5, 10, 20, 30, 50, 75, 100, 125, 150, 200, 250 and 300 m.
Before 1992, the temperatures were measured with a reversing thermometer with an accuracy of about 0.01 ° C. The salinity was analyzed by titration before 1965 and after 1965 measured with a salinometer. The accuracy was about 0.01 psu for both methods. After 1992, the stations were equipped with STD probes for measuring temperature, salinity and pressure (depth). Temperature and salinity are calibrated with a reversing thermometer and water samples that are analyzed for salinity in the laboratory, respectively. After calibration, the accuracy is about 0.01 for both salinity and temperature. The fixed hydrographic station is now usually observed 1-2 times per month, with the exception of the station Skrova which is observed 3-4 times per month.