GEOMAGNETIC EFFECTS OF EXPLOSIONS IN THE LOWER ATMOSPHERE

Journal Article · Fri Nov 01 04:00:00 EST 1963 · AIAA (Am. Inst. Aeron. Astronaut.)j.

DOI:https://doi.org/10.2514/3.55022· OSTI ID:4147145

Ivanov, K G

The results of work on the study of geomagnetic effects in the lower atmosphere (below 80 km)are reported. It is assumed that the initial changes of the field in the geomagnetic effect due to the explosion near Christmas Island were caused by the penetration through the ionosphere of a shock wave formed as a result of that explosion, whereas the shock waves of the explosions over Johnston Island induced a strengthening of the field upon penetration through the F layer of the ionosphere. The delay time of the variation after the explosion near Christmas Island was equal to the time of penetration of the shock wave from the location of the explosion (about 10/sup 5/ cm over the earth's surface) to the E layer of the ionosphere. The speed of the shock wave is taken equal to about 3.3 x 10/sup 4/ cm/sec. The time of penetration of shock waves from the point of the explosions over JohnstonIsland to an altitude of about 200--300 km is fixed according to a formula for a point explosion in an inhomogeneous atmosphere, and turns out to be equal to 1-2 min for the explosion of August 1, 1958, and 2-9 min for the explosion of August 12, 1958, which agrees with the delay of positive impulses as observed, equal, respectively, to 2.0 and about 5 min. (auth)

• Research Organization: Inst. of Terrestrial Magnetism, Ionosphere, and Radiowave Propagation, Academy of Sciences, USSR
• Sponsoring Organization: USDOE
• NSA Number: NSA-18-003347
• OSTI ID: 4147145
• Journal Information: AIAA (Am. Inst. Aeron. Astronaut.)j., Journal Name: AIAA (Am. Inst. Aeron. Astronaut.)j. Vol. Vol: 1
• Country of Publication: Country unknown/Code not available
• Language: English

Related Subjects

ABSORPTION
ATMOSPHERE
EARTH
EQUATIONS
EXPLOSIONS
IONOSPHERE
ISLANDS
LAYERS
MAGNETIC FIELDS
MEASURED VALUES
PACIFIC OCEAN
REACTOR TECHNOLOGY
SHOCK WAVES
VELOCITY