Leirvogur Magnetic Observatory, Iceland

[Picture of observatory]

  leirvogur plot

Record of measurements at Leirvogur for the past 24 hours
The record above is updated every 10 minutes. The top graph (Z) shows the vertical component of the geomagnetic field, the middle graph (H) shows the horizontal component and the bottom graph (D) shows the direction of that component, i.e. the direction of a compass needle at Leirvogur. Z and H are shown in units of nanotesla (nT) while D is shown in degrees, reckoned from north (0°) through east, south and west up to 360° (north, again). If D is 349°, for instance, the magnetic declination (variation) at Leirvogur is 349° E or 11° W (360-349 = 11). The average declination in the Reykjavik area is about 2° higher W, or ~13° W in this example.

Yesterday's record 

Past records 

Data files

Science Institute, University of Iceland, Upper Atmosphere Section


Diagrams on this page were prepared by Gunnlaugur Björnsson and Marteinn Sverrisson in April-May 2003.
Photo and text: Þ.S.