| Title | Analysis of geomagnetic hourly ranges |
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| Author | Danskin, D W ;
Lotz, S I |
| Source | Space Weather vol. 13, issue 8, 2015 p. 458-468, https://doi.org/10.1002/2015SW001184  Open Access |
| Year | 2015 |
| Alt Series | Earth Sciences Sector, Contribution Series 20150246 |
| Publisher | Wiley-Blackwell |
| Document | serial |
| Lang. | English |
| Media | paper; on-line; digital |
| File format | html; pdf |
| Subjects | geophysics; extraterrestrial geology; geomagnetic variations; geomagnetism; geomagnetic fields; solar variations |
| Illustrations | location maps; graphs; histograms |
| Program | Public Safety Geoscience Northern Canada Geohazards Project |
| Released | 2015 08 07 |
| Abstract | In an attempt to develop better forecasts of geomagnetic activity, hourly ranges of geomagnetic data are analyzed with a focus on how the data are distributed. A lognormal distribution is found to be
able to characterize the magnetic data for all observatories up to moderate disturbances with each distribution controlled by the mean of the logarithm of the hourly range. In the subauroral zone, the distribution deviates from the lognormal, which
is interpreted as motion of the auroral electrojet toward the equator. For most observatories, a substantial deviation from the lognormal distribution was noted at the higher values and is best modeled with a power law extrapolation, which gives
estimates of the extreme values that may occur at observatories which contribute to the disturbance storm time (Dst) index and in Canada. |
| Summary | (Plain Language Summary, not published)
The statistics of how the magnetic field of the earth varies due to space weather for the period 1972-2009. |
| GEOSCAN ID | 296980 |
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