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Mercury Radar Imaging: Evidence for Polar Ice
Abstract
The first unambiguous full-disk radar mapping of Mercury at 3.5-centimeter wavelength, with the Goldstone 70-meter antenna transmitting and 26 antennas of the Very Large Array receiving, has provided evidence for the presence of polar ice. The radar experiments, conducted on 8 and 23 August 1991, were designed to image the half of Mercury not photographed by Mariner 10. The orbital geometry allowed viewing beyond the north pole of Mercury; a highly reflective region was clearly visible on the north pole during both experiments. This polar region has areas in which the circular polarization ratio (μ c ) was 1.0 to 1.4; values < ∼0.1 are typical for terrestrial planets. Such high values of μ c have hitherto been observed in radar observations only from icy regions of Mars and icy outer planet satellites.
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Cited by
Near-Surface Temperatures on Mercury and the Moon and the Stability of Polar Ice Deposits
Vasavada, A. (1999) · Icarus · doi:10.1006/icar.1999.6175 · Cited by 615
The lunar atmosphere: History, status, current problems and context
Stern, S. A. (1999) · Reviews of Geophysics · doi:10.1029/1999rg900005 · Cited by 405
Hayne, P. O., Hendrix, A., Sefton-Nash, E., Siegler, M. A., Lucey, P. G., Retherford, K. D., Williams, J.-P., Greenhagen, B. T., & Paige, D. A. (2015) · Icarus · doi:10.1016/j.icarus.2015.03.032 · Cited by 326
Deutsch, A. N., Neumann, G. A., & Head, J. W. (2017) · Geophysical Research Letters · doi:10.1002/2017gl074723 · Cited by 52
Metadata
- Authors
- Slade, M. A., Butler, B. J., & Muhleman, D. O.
- Venue
- Science
- Published
- 1992-10-23
- Volume
- 258
- Issue
- 5082
- Pages
- 635-640
- ISSN
- 0036-8075 (ISSN-L)
- 1095-9203
- OpenAlex
- W1978389347
- Cited by
- 345
- References
- 0
- FWCI
- 9.83
- Type
- journal article
- Language
- en
- Open access
- closed
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- Slade, M. A., Butler, B. J., & Muhleman, D. O. (1992). Mercury Radar Imaging: Evidence for Polar Ice. Science. https://doi.org/10.1126/science.258.5082.635
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