A summary report on the coordinated optical, radio, geomagnetic and ionospheric observations of the solar eclipse of September 22, 1968 in Sinkiang

Details A summary report on the coordinated optical, radio, geomagnetic and ionospheric observations of the solar eclipse of September 22, 1968 in Sinkiang A summary report on the coordinated optical, radio, geomagnetic and ionospheric observations of the solar eclipse of September 22, 1968 in Sinkiang

Jun 1976

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1976acasn..17...41s&link_type=abstract

Acta Astronomica Sinica, vol. 17, June 1976, p. 41-59. In Chinese, with abstract in English.

Computer Science

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Astronomical Photography, Geomagnetism, Ionospheric Sounding, Radio Observation, Solar Eclipses, Stellar Spectrophotometry, Brightness Temperature, Critical Frequencies, Light Emission, Magnetic Disturbances, Polarization Characteristics, Radiant Flux Density, Solar Corona

Scientific paper

The paper summarizes the main results of a coordinated observation of the solar eclipse involving many different types of measurements. Photographs of the corona at various wavelengths were taken during totality. Good photographs of the coronal condensation region were obtained; photometric measurements yielded data on brightness distribution and polarization. From analysis of radio observations at 3.2, 11.1, and 21 cm were derived flux density, one-dimensional size, height, brightness temperature, magnetic field, and spectrum of local sources. The eclipse effect on the geomagnetic field was calculated to be less than 5 gamma. The maximum decrease of the critical frequency during the eclipse was about 0.8 MHz.

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