Publication Abstracts

Thaddeus 1968

Thaddeus, P., 1968: Dependence of the radio and radar spectra of Venus on surface conditions. J. Atmos. Sci., 25, 665, doi:10.1175/1520-0469(1968)025<0665:DOTRAR>2.0.CO;2.

Kuzmin and Vetukhnovskaya (1968) suggest that ground pressures in the range from 20 to 70 atm satisfy the passive radio observations, but the higher pressure is necessary to provide a high opacity at λ = 3.8 cm and, therefore, to account for the low radar cross section observed at this wavelength. They point out that a surface pressure close to 70 atm need not contradict the Venera 4 observation of a surface pressure of 18.5 atm, if the capsule landed in a local region of high surface elevation, perhaps 10 km above the mean elevation. As long as the ground temperature is fixed, however, and a roughly adiabatic lapse rate is assumed from the ground to the cloud tops, the radio brightness spectrum is rather sensitive to the ground pressure and seems to discriminate against the high surface pressure suggested by Kuzmin and Vetukhnovskaya.

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BibTeX Citation

@article{th02100q,
  author={Thaddeus, P.},
  title={Dependence of the radio and radar spectra of Venus on surface conditions},
  year={1968},
  journal={J. Atmos. Sci.},
  volume={25},
  pages={665},
  doi={10.1175/1520-0469(1968)025%3C0665%3ADOTRAR%3E2.0.CO;2},
}

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RIS Citation

TY  - JOUR
ID  - th02100q
AU  - Thaddeus, P.
PY  - 1968
TI  - Dependence of the radio and radar spectra of Venus on surface conditions
JA  - J. Atmos. Sci.
VL  - 25
SP  - 665
DO  - 10.1175/1520-0469(1968)025%3C0665%3ADOTRAR%3E2.0.CO;2
ER  -

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