Interplanetary magnetic field polarity and low-latitude geomagnetic field |
| |
| Authors: | BN Bhargava GK Rangarajan |
| |
| Institution: | Indian Institute of Geomagnetism, Colaba, Bombay 400 005, India |
| |
| Abstract: | 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. |
| |
| Keywords: | |
| 本文献已被 ScienceDirect 等数据库收录！ |
|
