Physics – Geophysics
Scientific paper
Aug 2005
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2005a%26g....46d..31h&link_type=abstract
Astronomy & Geophysics, Volume 46, Issue , pp. 4.31-4.34.
Physics
Geophysics
2
Scientific paper
The 1771-1813 diary of Thomas Hughes from Stroud, Gloucestershire (51.75°N, 2.22°W), has provided a rich source of historical meteorological data. In addition, it lists 71 nights on which the aurora was seen, between 19 February 1771 and 13 October 1805 inclusive. 90% of Hughes' aurora observations occurred between 1771 and 1789. These observations provide information on the incidence of the aurora in the southern UK, before light pollution. Eleven of the auroral nights recorded by Hughes exactly coincide with central Europe auroral reports and a further nine coincide to within one day. In addition, Hughes' aurora observation of 22 October 1788 exactly coincides with a strong aurora seen in Europe and at Yagamata, Japan. Month by month variations (1771-1805) of aurorae at Stroud show, in common with 20th-century data, two equinoctal maxima, in March-April (19 nights) and October (15 nights). The seasonal variation at Stroud confirms theoretical predictions that the auroral zone has moved north since the 18th century.
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