Publication Date:
2019-06-27
Description:
Tables and plots of provisional hourly values of the equatorial Dst index for 1971 are given, a table of daily mean Dst values for 1971 is also provided. The base line values for the four observatories, Hermanus, Kakioka, Honolulu, and San Juan, were obtained from extrapolations using the coefficients for the secular variations determined for the previous years. Examining the Dst values for quiet days, the base lines so determined appear to be slightly low, so that the Dst index for quiet periods tends to be high.
Keywords:
SPACE RADIATION
Type:
NASA-TM-X-65930
,
X-645-72-200
Format:
application/pdf
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