Analysis of plasma and field conditions during some intensely geo-effective transient solar/interplanetary disturbances of solar cycle 23 |
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Authors: | Yatendra Pal Singh Munendra Singh Badruddin |
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Institution: | (1) Department of Physics, Aligarh Muslim University, 202 002 Aligarh, India |
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Abstract: | The problem of solar wind-magnetosphere coupling is investigated for intense geomagnetic storms (Dst < -100nT) that occurred
during solar cycle 23. For this purpose interplanetary plasma and field data during some intensely geo-effective transient
solar/interplanetary disturbances have been analysed. A geomagnetic index that represents the intensity of planetary magnetic
activity at subauroral latitude and the other that measures the ring current magnetic field, together with solar plasma and
field parameters (V, B, Bz, σB, N, and T) and their various derivatives (BV,-BVz, BV2, -BzV2, B2V, Bz2V, NV2) have been analysed in an attempt to study mechanism and the cause of geo-effectiveness of interplanetary manifestations
of transient solar events. Several functions of solar wind plasma and field parameters are tested for their ability to predict
the magnitude of geomagnetic storm. |
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Keywords: | Earth: geomagnetic storm Sun: solar and wind magnetosphere coupling |
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