Mathematics – Probability
Scientific paper
Nov 1976
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1976natur.264..239k&link_type=abstract
Nature, vol. 264, Nov. 18, 1976, p. 239, 240. NASA-Navy-supported research.
Mathematics
Probability
1
Geomagnetism, Interplanetary Magnetic Fields, Magnetic Disturbances, Magnetic Spectroscopy, Solar Activity Effects, Spectrum Analysis, Weather, Annual Variations, Solar Rotation, Twenty-Seven Day Variation, Vorticity
Scientific paper
Spectral analysis is used as an independent test of the reported association between interplanetary-magnetic-field structure and terrestrial weather. Spectra of the Ap geomagnetic activity index and the vorticity area index for the years from 1964 to 1970 are examined for common features that may be associated with solar-related phenomena, specifically for peaks in the power spectra of both time series with periods near 27.1 days. The spectra are compared in three ways, and the largest peak with the smallest probability estimate is found to occur at a period of 27.49 days. This result is considered to be statistically significant at the 98% level. It is concluded that the period derived from the Ap spectrum is related to solar rotation and that the analysis provides supporting evidence for a connection between the vorticity area index and solar activity.
Knight J. W.
Sturrock Peter Andrew
No associations
LandOfFree
Solar activity geomagnetic field and terrestrial weather does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Solar activity geomagnetic field and terrestrial weather, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Solar activity geomagnetic field and terrestrial weather will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-1726622