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MORPHOLOGICAL STUDY OF GEOMAGNETIC PULSATIONS

Journal Article · · J. Phys. Soc. Japan
OSTI ID:4756298
Using the rapid-run and the ordinary magnetograms obtained during IGY, at the observatories distributed fairly well over the world, continuous pulsations of type I (range in period from 10 to 50 seconds), II (50-150 sec), and III (150-900 sec) are analyzed with pt-type pulsation. Type II pc shows remarkable enhancement in the daytime as type I pc, while type III pc has two vague maxima in the morning and the evening. The geomagnetic latitude is higher, the range of all three types of pulsations is larger, especially for type III pc, there is a sharp maximum in the auroral zone. For pt-type pulsation, its latitudinal dependence is compared with that of bay disturbance. The detail mode of world-wide synchronous oscillation according as the progress of pt shows that the direction of each oscillation is apt to point towards the midnight meridian in the northern or southern auroral zone. (auth)
Research Organization:
Tohoku Univ., Sendai
NSA Number:
NSA-17-012885
OSTI ID:
4756298
Journal Information:
J. Phys. Soc. Japan, Journal Name: J. Phys. Soc. Japan Vol. Vol: 17: Suppl. A-II
Country of Publication:
Country unknown/Code not available
Language:
English

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