Matzka, Jurgen; Macmillan, Susan. 2005 Magnetic repeat station results 2004 for Tristan da Cunha, South Atlantic Ocean. [Poster] In: IAGA Scientific Assembly 2005, Toulouse, France, 18-29 July 2005. (Unpublished)
Abstract
In this study, we present repeat staion measurements from a location that has distances of some 3000km to the nearest observatories. We are taking advantage of the rather quiet magnetic field during the measurements and use models of the solar quiet daily variation to extrapolate our results to quiet night time values of the magnetic field. Our data gives us some confidence in this extrapolation, which can be used for repeat stations where the employment of on-site variometers or night time measurements is logistically impossible.
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