An investigation into techniques for isolating noise in observatory data

Turbitt, C.; Baillie, O.; Kerridge, D.; Clarke, E.

Turbitt, C.; Baillie, O.; Kerridge, D.; Clarke, E.. 2011 An investigation into techniques for isolating noise in observatory data. Data Science Journal, 10. IAGA174-IAGA182. 10.2481/dsj.IAGA-25

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Abstract

In this study, using one-minute definitive data published by a number of INTERMAGNET observatories, we
apply a number of time- and frequency-domain techniques to characterise the global, natural geomagnetic
signal and isolate the artificial noise at an individual observatory. With the aim of developing an analytical tool
that can be used to identify observatory noise against the natural signal, we report on the suitability of these
techniques to detect common observatory noise types.

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