Interplanetary magnetic field polarity and low-latitude geomagnetic field

Bhargava, B. N. ; Rangarajan, G. K. (1975) Interplanetary magnetic field polarity and low-latitude geomagnetic field Planetary and Space Science, 23 (6). pp. 929-933. ISSN 0032-0633

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The relationship between the low latitude magnetic field and the polarity of the interplanetary magnetic field, inferred by Svalgaard for a period of about 4 solar cycles, is derived and discussed for low and high solar activity conditions. The field reacts differently during the passage of A (away) and C (toward) sectors and, during the passage of sector boundary, the response is substantially different depending upon the nature of the change, i.e.A to C or C to A; a change of sector from A to C is found to be associated with a large depression in the field. It is also observed that the night-time field in low latitudes is best correlated with the AC index and that the correlation, observed throughout the period of 1929-1957, breaks down after 1962. The results computed from Alibag observations are confirmed by an examination of the data from Hermanus and San Juan.

Item Type:Article
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ID Code:27619
Deposited On:10 Dec 2010 11:57
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