Relationship between the geomagnetic Dst(min) and the interplanetary Bz(min) during cycle 23 |
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| Authors: | RP Kane |
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| Institution: | 1. Electronics and Communication Engineering, Dr. B.C. Roy Engineering College, Durgapur, India;2. Electronics and Instrumentation Engineering, Dr. B.C. Roy Engineering College, Durgapur, India;3. Electronics and Communication Engineering, National Institute of Technology, Durgapur, India |
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| Abstract: | In cycle 23 for geomagnetic storms of ?Dst(min) >50 nT, the plot of ?Dst(min) versus ?Bz(min) for the low ?Bz(min) range 0–10 nT showed erratic variation in Dst(min), (correlation 0.19). Even for ?Bz(min) range 10–20 nT, ?Dst(min) values had considerable scatter (correlation 0.57). For ?Bz(min).>20 nT, the relationship was good (correlation 0.82). For the whole range ?Bz(min) 0–50 nT, the correlation was high (0.88). Thus, if ?Bz(min) is very large (～20 nT), large ?Dst(min) occurs but in a wide range of 100–500 nT. |
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