The geomagnetic field is a vector field described by intensity and two angles of direction or three other linearly independent components. Shown here are the 1-minute absolute mean values of the components horizontal intensity (H), declination (D), vertical intensity (Z) and total intensity (F). They are continuously recorded at the geomagnetic observatory. Horizontal intensity is the component pointing towards magnetic north tangentially to the Earth's surface. Declination is the angle between geographic and magnetic north and vertical intensity is the component perpendicular to the Earth's surface, pointing positive downward.
H, Z and F are given in Nanotesla (nT), D in minutes of arc. The absolute components are obtained by added the usually quiet night time values to the variation values.
The values shown here are uncorrected measurement results. Sporadically artificial disturbances (i.e. erroneous values) might occur, which will only be corrected in the final data sets later on.
The K index shows the local disturbance of the earth's magnetic field. The K index is a quasi-logarithmic measure of the maximum disturbance in steps of 0 to 9 for three hours (UTC) each; 550 nT is the lower limit for K = 9 at Yakutsk. Large indices point to a correspondingly higher penetration of corpuscular radiation.
Continuous data for Yakutsk station are available from Jan 1, 2008 to present.
Data for the current year are preliminary. Data gaps were filled with 99999.90 for the missing intervals.
The observatory was upgraded by modern instruments in the frames of Cooperation agreement between the Yu.G. Shafer Institute of Cosmophysical Research and Aeronomy SB RAS and the German Research Centre for Geosciences, Potsdam, Germany
CONTINUOUSLY RECORDING VECTOR MAGNETOMETER
(H,D, Z-magnetic field components measurement)
|Manufacturer:||Danish Meteorological Institute|
|Resolution of digital data [0.1nT]:||0.1 nT|
|Automatic dynamic range of digital data:||+/-1000 nT|
|Sampling rate of digital data:||0.5 Sec.|
CONTINUOUSLY RECORDING SCALAR MAGNETOMETER
(Total field (F) measurement in the variometer house)
|Instrument Type:||GSM 90|
|Resolution of digital data:||0.01 nT|
|Automatic dynamic range of digital data:||65000 nT|
|Sampling rate of digital data:||5 Sec.|
|Declination (D) and Inclination (I)|
(D and I angles measurement in the absolute house)
|Instrument Type:||Theo 020B+DMI sensor|
|Manufacturer:||Carl Zeiss Jena/DMI|
|Measurement accuracy:||0.1 min of arc|
|Total field (F)|
(measurement in the absolute house)
|Instrument Type:||GSM 19T|
|Measurement accuracy:||0.01 nT|
Principal Investigator of “Yakutsk” magnetic observatory - Dr. Alexey Moiseyev.
For questions concerning the usage of “Yakutsk” magnetic observatory data in publications please contact: Dr. Alexey Moiseyev