Resource Name: Kakioka geomagnetic field annual mean digital data
Release Date: 2014-06-03T00:00:00
Description: The geomagnetic field annual mean digital data observed at Kakioka (KAK). There are twelve types of annual mean value files depending on the combination of seasons, quiet and disturbed days.
Citation: Kakioka Magnetic Observatory, 2014, Kakioka geomagnetic field annual mean digital data [dataset], Kakioka Magnetic Observatory Digital Data Service, doi:10.48682/186bd.05000
- Contact
- Contact person:
Technical Division of the Kakioka Magnetic Observatory
- Organization Name: Japan Meteorological Agency
- E mail: kakioka@met.kishou.go.jp
- Role: General Contact
- Organization Name: Japan Meteorological Agency
- Access Information
-
Access URL:
https://www.kakioka-jma.go.jp/en/index.html
- Availability: Online and CD-ROM (Annual Report)
- Accessrights: Open
- Format: ASCII
- Acknowledgement: If the data are used in publications and presentations, the Kakioka Magnetic Observatory of the Japan Meteorological Agency should be acknowledged properly.
- Availability: Online and CD-ROM (Annual Report)
- Instruments
-
Measurement Type:
Geomagnetic field
- Instrument Type: Magnetometer
- Description: Variometers: Triaxial high-sensitivity fluxgate magnetometer (X,Y and Z components) and Overhauser magnetometer (scalar field F) after Apr. 1993. Four optically pumped magnetometers (X, Y, Z and F) (1972 - 1993). Torsion magnetometers (H,D and Z) before 1995. Absolute Instruments: Magnetometer theodolite (search-coil type) (D and I) and Proton precession magnetometer after (F) Jan. 1976. Vector proton precession magnetometer (H, Z and F) (1964 - 1975) Standard magnetometer (D, I, H and Z) proposed by E.A. Johnson (1939) (1958 - 1975). Schmidt's magnetic theodolite (D and H) and Schmidt's earth-inductor (I) (1930 - 1957). Wild-Edelmann's declinometer (D and H) and Wild-Edelmann's earth-inductor (I) (1913 - 1947).
- Sensor Orientation: variation:XYZF, absolute:DIF
- Instrument Type: Magnetometer
- Temporal Description
-
- Time Span
-
Start Date:
1913-01-31T15:00:00
- Relative Stop Date: 1 year ago (-P1Y)
- Spatial Coverage
-
Observed Region:
Earth's surface
- Coordinate System Name: GEO(WGS84)
- Coordinate Representation: Spherical
- Northernmost Latitude: 36.232
- Southernmost Latitude: 36.232
- Easternmost Longitude: 140.186
- Westernmost Longitude: 140.186
- Unit: Degree
- Minimum Altitude: 0.036
- Maximum Altitude: 0.036
- Unit: km
- Reference Name: Kakioka Magnetic Observatory
- Reference Code: KAK
- Coordinate System Name: GEO(WGS84)
- Parameter
-
Name:
Geomagnetic field
- Description: Annual mean value is calculated as averages one-hour values.
- Field
-
Qualifier:
Vector
- Field Quantity: Magnetic
- Structure
-
Sampling:
- Interval: Average 1-year (Jan-Dec)
- Data Type: definitive
- Elements: DIHXYZF
- Units: D(eastward+)[arc minute], H[nT], Z(downward+)[nT], F[nT]
- Resolution: 1nT ( 0.1 arc minute)
- Interval: Average 1-year (Jan-Dec)
- Remarks: X=H*cos(D*pi/180/60) [nT],Y=H*sin(D*pi/180/60) [nT], I=arctan(Z/H)*60*180/pi [arc minute]
- Description: Annual mean value is calculated as averages one-hour values.