Medan magnetik bumi: Perbedaan revisi

17 bita dihapus ,  4 tahun yang lalu
cosmetic changes, replaced: Survey → Survei, removed stub tag
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k (cosmetic changes, replaced: Survey → Survei, removed stub tag)
* ''[ Geomagnetism & Paleomagnetism background material]''. American Geophysical Union Geomagnetism and Paleomagnetism Section.
* ''[ National Geomagnetism Program]''. [[United States Geological Survey]], March 8, 2011.
* ''[ BGS Geomagnetism]''. Information on monitoring and modeling the geomagnetic field. British Geological SurveySurvei, August 2005.
* William J. Broad, ''[ Will Compasses Point South?]''. [[New York Times]], July 13, 2004.
* John Roach, ''[ Why Does Earth's Magnetic Field Flip?]''. National Geographic, September 27, 2004.
* [ Global evolution/anomaly of the Earth's magnetic field] Sweeps are in 10 degree steps at 10 years intervals. Based on data from: The Institute of Geophysics, [ ETH Zurich]