1-min magnetometer data of magnetic observatory “Yakutsk” (YAK)

Magnetic field data

From To
Fields:

H

D

F

X

Y

Z
Chart
Data

H
D
F
X
Y
Z
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DESCRIPTION OF THE magnetometer DATA SETS

H – horizontal magnetic field component (nT)
D – Declination (minutes of arc)
Z- vertical magnetic field component (nT)
F- total field (scalar) (nT)
K – 3-hour averaged local magnetic activity index (k-index) of Yakutsk observatory

 

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.

DATA AVAILABILITY

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.

OBSERVATORY and INSTRUMENTS SPECIFICATIONS

Name:Yakutsk
IAGA code:YAK
Geographic Latitude:61.958
Geographic Longitude:129.658
Altitude:96 m

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)
Instrument Type:FGE
Manufacturer:Danish Meteorological Institute
Components Measured:HDZ
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
Manufacturer:GEM systems
Resolution of digital data:0.01 nT
Automatic dynamic range of digital data:65000 nT
Sampling rate of digital data:5 Sec.

ABSOLUTE INSTRUMENTS

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
Manufacturer:GEM Systems
Measurement accuracy:0.01 nT

ACKNOWLEDGEMENTS

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