IGRFInternational Geomagnetic Reference Field
IGRFInteressengemeinschaft Rote Fabrik (Zurich, Switzerland)
IGRFItalian Greyhound Rescue Foundation
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References in periodicals archive ?
Ryskin found strong temporal and spatial correlation between his calculated secular variation and the IGRF figures between 1995 and 2000.
The real inclination of the magnetic field at ground level as opposed to that predicted by world models based on higher altitude data (International Geomagnetic Reference Field (IGRF) models) was obtained using a Magnaprobe gimbaled magnetic needle.
The observed value for the inclination of the magnetic field (+10 degrees to horizontal) differs markedly from the predicted IGRF value of -30 degrees.
After a series of "disconcerting" events, Zurich's mayor at the time, Urs Widmer, agreed to negotiate with the activists and granted them a temporary permit, giving the IGRF total control over the factory.
where [alpha] is the magnetic declination computed from the international geomagnetic reference field (IGRF) or world magnetic model (WMM) using position information.
The geomagnetic gradient was removed using the January 1974 International Geomagnetic Reference Field (IGRF).