Astronomy and Astrophysics – Astronomy
Scientific paper
Jun 2007
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2007pnaoc...4..141g&link_type=abstract
Astronomical Research and Technology. Publications of National Astronomical Observatories of China (ISSN 1672-7673), Vol. 4, No.
Astronomy and Astrophysics
Astronomy
Length Of Day, Geomagnetic Field Variation, Mutual Correlation
Scientific paper
Two data sets including the historical geomagnetic field model and the length of the day are used to analyze the correlation characteristics of the geomagnetic field variation and the changes in the length of the day from 1840-2000. The results show that a lag correlation is available in the changes of geomagnetic field and the length od the day. The geomagnetic intensity parameter is approximately exceeding LOD by 7.5-10 year. However the geomagnetic western drift parameters lag behind LOD variation, the western drift components lag behind LOD by 7.5 years, the average drifting speed and the latitudinal drifting components of the geomagnetic filed lag behind LOD by 20-22.5 years.
Bai Chun-Hua
Gao Guo-Ming
Kang Guo-Fa
Li Wangrong
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