Monsoon rainfall cycles as depicted in ancient Sanskrit texts

Monsoon rainfall cycles as depicted in ancient Sanskrit texts

Year to year variation of Indian monsoon rainfall is described qualitatively in some ancient Sanskrit texts. Interestingly, these are cyclic with periods of 3, 5, 7, 18 and 60 years. Time series analysis of actual seasonal rainfall data shows that at very near the above periods the spectrum has sign...

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Veröffentlicht in:Current science (Bangalore) 2009-08, Vol.97 (3), p.444-447
1. Verfasser: Iyengar, R. N.
Format: Artikel
Sprache:eng
Schlagworte:
Agricultural seasons
Agriculture
Almanacs
Equinoxes
HISTORICAL NOTES
Monsoons
Natural satellites
Rain
Rainy seasons
Sun
Venus
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Zusammenfassung:Year to year variation of Indian monsoon rainfall is described qualitatively in some ancient Sanskrit texts. Interestingly, these are cyclic with periods of 3, 5, 7, 18 and 60 years. Time series analysis of actual seasonal rainfall data shows that at very near the above periods the spectrum has significant peaks. The Venus visibility portent stated in the Arthasastra appears to be a proxy for the near three-year fluctuation cycle in the rainfall.
ISSN:0011-3891