| Abstract: | Present ideas about the surface and interior of Venus are based on data obtained from (1) Earth-based radio and radar: temperature, rotation, shape, and topography; (2) fly-by and orbiting spacecraft: gravity and magnetic fields; and (3) landers: winds, local structure, gamma radiation. Surface features, including large basins, crater-like depressions, and a linear valley, have been recognized from recent ground-based radar images. Pictures of the surface acquired by the USSR‘s Venera 9 and 10 show abundant boulders and apparent wind erosion. On the Pioneer Venus 1978 Orbiter mission, the radar mapper experiment will determine surface heights, dielectric constant values and small-scale slope values along the sub-orbital track between 50??S and 75??N. This experiment will also estimate the global shape and provide coarse radar images (40-80 km identification resolution) of part of the surface. Gravity data will be obtained by radio tracking. Maps combining radar altimetry with spacecraft and ground-based images will be made. A fluxgate magnetometer will measure the magnetic fields around Venus. The radar and gravity data will provide clues to the level of crustal differentiation and tectonic activity. The magnetometer will determine the field variations accurately. Data from the combined experiments may constrain the dynamo mechanism; if so, a deeper understanding of both Venus and Earth will be gained. ?? 1977 D. Reidel Publishing Company. |
| Genre: | Article |
| ProdID: | 70001048 |
| Citation Author: | Masursky, H.; Kaula, W. M.; McGill, G. E.; Pettengill, G. H.; Phillips, R. J.; Russell, C. T.; Schubert, G.; Shapiro, I. I. |
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| Citation End Page: | 449 |
| Citation Issue: | 4 |
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| Citation Language: | English |
| Citation Larger Work Title: | Space Science Reviews |
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| Citation Publisher: | Kluwer Academic Publishers |
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| Citation Search Results Text: | 10. The surface and interior of venus; 1977; Article; Journal; Space Science Reviews; Masursky, H.; Kaula, W. M.; McGill, G. E.; Pettengill, G. H.; Phillips, R. J.; Russell, C. T.; Schubert, G.; Shapiro, I. I. |
| Citation Start Page: | 431 |
| Citation Volume: | 20 |
| Citation Year: | 1977 |
| Type: | citation/reference |
| Text: | 10. The surface and interior of venus; 1977; Article; Journal; Space Science Reviews; Masursky, H.; Kaula, W. M.; McGill, G. E.; Pettengill, G. H.; Phillips, R. J.; Russell, C. T.; Schubert, G.; Shapiro, I. I. |
| URL (THUMBNAIL): | http://pubs.er.usgs.gov/thumbnails/outside_thumb.jpg |
| URL (DIGITAL OBJECT IDENTIFIER): | http://dx.doi.org/10.1007/BF02186462 |
| Date Other: | Tue, 28 Sep 2010 23:09 -0500 |
| Publisher: | Kluwer Academic Publishers |
