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Title: Geomagnetic Activity & Rainfall during the Northeast Monsoon
Authors: Reddy, R S
Parasnis, S S
Murty, BH V Ramana
Issue Date: Oct-1979
Publisher: NISCAIR-CSIR, India
Abstract: The dates of occurrence of principal geomagnetic storms, the daily sums of K-indices and the rainfall of Tamil Nadu during the northeast monsoon (October-December) for the period 1961-70, are studied by the superposed-epoch method and the power spectrum analysis technique. Maximum rainfall is observed 0 to 7 days following the dates of onset of principal geomagnetic storms. Frequency analysis of the maximum rainfall observed following geomagnetic storms shows two prominent peaks during the periods 16-20 October and 16-20 November. The geomagnetic activity and the daily rainfall show 15-day periodicities which are significant at 90 and 99 per cent levels, respectively.
Page(s): 277-280
ISSN: 0975-105X (Online); 0367-8393 (Print)
Appears in Collections:IJRSP Vol.08(5&6) [October & December 1979]

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