Geomagnetic hourly average and minute values from digital data

Green, C.A.. 1985 Geomagnetic hourly average and minute values from digital data. Edinburgh, UK, British Geological Survey, 20pp. (WM/GM/85/019) (Unpublished)

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The production of geomagnetic hourly average values from discrete one minute values, and the production of the one minute values themselves from more rapidly sampled data, are investigated. It is shown that hourly average values obtained from an average of one minute values within the hour should form a homogenous set with those previously obtained by handscaling of analogue records. Generation of the one minute values by digital filtering of more rapidly sampled data is recommended. A simple cosine weighting applied to 5 or 10 second sampled data (13 or 7 point filter respectively) is suggested.

Item Type: Publication - Report
Programmes: BGS Programmes > Other
Funders/Sponsors: British Geological Survey
Additional Information. Not used in RCUK Gateway to Research.: This item has been internally reviewed, but not externally peer-reviewed.
NORA Subject Terms: Earth Sciences
Date made live: 02 Apr 2020 12:29 +0 (UTC)

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