Titre du document

On artificial geomagnetic and ionospheric storms associated with high?altitude explosions

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Nom du Corpus

AstroConcepts

Auteur(s)
  • Sadami Matsushita
Résumé

Geophysical effects of nuclear explosions at Johnston Island on August 1 and 12, 1958, were studied by means of IGY geomagnetic and ionospheric data collected at various stations in the Pacific area and the American continent. The explosion heights are estimated at 70 to 80 km and about 40 km, respectively. Immediately after each explosion, three phenomena occurred. (1) Strong counterclockwise circular electric currents were formed in the vicinty of Johnston Island at 80? to 100?km height. They caused the immediate occurrence of artificial magnetic storms in the central Pacific. (2) High?energy particles moving along the magnetic lines of force caused auroras seen from Apia, and also caused the main parts of the magnetic storms observed at Apia. (3) X?rays due to the explosion caused the increase of the D?region absorption observed at Maui. Irregularities of the electron density in the F?layer at Maui and the maximum geomagnetic change at Honolulu were caused by a shock wave from the explosion. The degree of ionization in a wide area in the central Pacific increased to about 10 times normal within 35 min after the first explosion and within about 6 hr after the second. Then a strong radio absorption continued for many hours.

Langue(s) du document
Anglais
Année de publication
1959
Revue

Journal of Geophysical Research

Éditeur
Wiley
Type de publication
journal
Type de document
article
Présence de XML structuré
Non
Version de PDF
1.2
Score de qualité du texte
9.424
Nom du concept
  • Radiation belts
Catégories Science-Metrix
  • 1 - natural sciences ; 2 - earth & environmental sciences ; 3 - meteorology & atmospheric sciences
Catégories Scopus
  • 1 - Physical Sciences ; 2 - Earth and Planetary Sciences ; 3 - Palaeontology
  • 1 - Physical Sciences ; 2 - Earth and Planetary Sciences ; 3 - Space and Planetary Science
  • 1 - Physical Sciences ; 2 - Earth and Planetary Sciences ; 3 - Earth and Planetary Sciences (miscellaneous)
  • 1 - Physical Sciences ; 2 - Earth and Planetary Sciences ; 3 - Atmospheric Science
  • 1 - Physical Sciences ; 2 - Earth and Planetary Sciences ; 3 - Earth-Surface Processes
  • 1 - Physical Sciences ; 2 - Earth and Planetary Sciences ; 3 - Geochemistry and Petrology
  • 1 - Life Sciences ; 2 - Agricultural and Biological Sciences ; 3 - Soil Science
  • 1 - Physical Sciences ; 2 - Environmental Science ; 3 - Water Science and Technology
  • 1 - Physical Sciences ; 2 - Environmental Science ; 3 - Ecology
  • 1 - Life Sciences ; 2 - Agricultural and Biological Sciences ; 3 - Aquatic Science
  • 1 - Life Sciences ; 2 - Agricultural and Biological Sciences ; 3 - Forestry
  • 1 - Physical Sciences ; 2 - Earth and Planetary Sciences ; 3 - Oceanography
  • 1 - Physical Sciences ; 2 - Earth and Planetary Sciences ; 3 - Geophysics
Catégories WoS
  • 1 - science ; 2 - geosciences, multidisciplinary
Identifiant ISTEX
404B14862D1B515F5C23AC83486E91F7607EC740
ark:/67375/WNG-KGM1CL5L-X
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