EVIDENCE OF QUASI-PERPENDICULAR PROPAGATION OF HYDROMAGNETIC WAVES CAUSED BY NUCLEAR EXPLOSIONS OVER JOHNSTON ISLAND
Evidence is presented which supports the suggestion that the initial phase of artificial magnetic storms due to highaltitude nuclear explosions over Johnston Island may be interpreted by hydromagnetic wave propagation. Replotted recordings are presented of the induction magnetograph around 10h, 50m, GMT on August 1. 1958, and around 10h, 30m, GMT on August 12, at Shimosato and Onawowa in Japan. Examination of the magnetic traces shows peculiar changes around the explosion time each day. The changes seem to consist of two parts, the first and second arrivals, and each lasts about 30 sec. An almost complete similarity between the changes on both days at each station seems to provide evidence that these changes are the direct effect of the Johnston Island explosions. (C.H.)
- Research Organization:
- Kyoto Univ.
- Sponsoring Organization:
- USDOE
- NSA Number:
- NSA-15-007629
- OSTI ID:
- 4116809
- Journal Information:
- Nature, Journal Name: Nature Vol. Vol: 188
- Country of Publication:
- Country unknown/Code not available
- Language:
- English
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