Other
Scientific paper
Jul 2007
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2007ep%26s...59..685v&link_type=abstract
Earth, Planets and Space, Volume 59, p. 685-695.
Other
5
Scientific paper
We investigated the European geomagnetic observatory biases over 42 years, considered as contributions of the crustal field, and generally assumed to be constant in time. To estimate these biases, we compared observatory annual means to predictions given by the continuous CM4 model, and to four other core field models for different epochs. Solar-cycle related external fields are clearly present in the residuals. Although well-known, no suitable model to minimise them exists. We found that an empirical approach, taking advantage of the homogeneity of the external influences in the European region, can minimise these influences. Their reduction is better than when the external field description included in the comprehensive CM4 model is used. At several locations clear long-term trends remain after subtraction of the core field and minimisation of external fields. We investigated whether they are due to an insufficient description of the core field secular variation by the CM4 model, or to changes in induced lithospheric fields.
Korte Monika
Mandea Mioara
Verbanac Giuli
No associations
LandOfFree
On long-term trends in European geomagnetic observatory biases does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with On long-term trends in European geomagnetic observatory biases, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and On long-term trends in European geomagnetic observatory biases will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-1662913