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http://nopr.niscpr.res.in/handle/123456789/37410| Title: | vlf Sudden Phase Anomalies during Flares of Aug. 1972 |
| Authors: | Dubey, R C Gupta, S K Pande, M C |
| Issue Date: | Mar-1977 |
| Publisher: | NISCAIR-CSIR, India |
| Abstract: | Sudden phase anomalies during solar flares of 2 and 4 Aug. 1972 were observed in NPG 18'6 kHz signals over a long vlf propagation path between Jim Creek, Washington and Naini Tal. This and the other simultaneous phase anomaly data by Naito et al. (Solar geophys. Data, UAG, 28 (1973), 584] at a frequency of 22·3 kHz over a propagation path between Uji, Kyoto University and NWC, Australia, have been utilized to study the enhanced D-Iayer ionization and lowering of reflection heights during the flares. The values Of ae eff= 5·5 X 10-5 cm3 sec-1 and 2·91 x 10-3 cm3 sec-1 for the 2 and 4 Aug. 1912 flares are higher than the values estimated by Chakrabarty D K and Mitra A P (Indian J. Radio Space Phys., 3 (1974). 76] for strong flares. |
| Page(s): | 67-68 |
| ISSN: | 0975-105X (Online); 0367-8393 (Print) |
| Appears in Collections: | IJRSP Vol.06(1) [March 1977] |
Files in This Item:
| File | Description | Size | Format | |
|---|---|---|---|---|
| IJRSP 6(1) 67-68.pdf | 177.24 kB | Adobe PDF | View/Open |
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