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Science 27 September 1991:
Vol. 253. no. 5027, pp. 1531 - 1536
DOI: 10.1126/science.253.5027.1531
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Articles
Images from Galileo of the Venus Cloud Deck
MICHAEL J. S. BELTON 1,
PETER J. GIERASCH 2,
MICHAEL D. SMITH 2,
PAUL HELFENSTEIN 2,
PAUL J. SCHINDER 2,
JAMES B. POLLACK 3,
KATHY A. RAGES 3,
ANDREW P. INGERSOLL 4,
KENNETH P. KLAASEN 5,
JOSEPH VEVERKA 2,
CLIFFORD D. ANGER 6,
MICHAEL H. CARR 7,
CLARK R. CHAPMAN 8,
MERTON E. DAVIES 9,
FRASER P. FANALE 10,
RONALD GREELEY 11,
RICHARD GREENBERG 12,
JAMES W. HEAD III 13,
DAVID MORRISON 3,
GERHARD NEUKUM 14, and
CARL B. PILCHER 15
1 National Optical Astronomy Observatories, Tucson, AZ 85719
2 Cornell University, Ithaca, NY 14853
3 NASA Ames Research Center, Moffet Field, CA 94035
4 California Institute of Technology, Pasadena, CA 91125
5 Jet Propulsion Laboratory, Pasadena, CA 91109
6 ITRES Research Ltd., Calgary, Canada, T2E 7H7
7 United States Geological Survey, Menlo Park, CA 94025
8 Planetary Science Institute, Science Applications International Corporation, Tucson, AZ 85f7P19
9 RAND Corporation, Santa Monica, CA 90406
10 Institute for Geophysics, Honolulu, HI 96822
11 Arizona State University, Tempe, AZ 85281
12 University of Arizona, Tucson, AZ 85721
13 Brown University, Providence, RI 02912
14 Deutsche Luft und Raumfahrt, 8031 Oberpfaffenhofen, Federal Republic of Germany
15 NASA Headquarters, Washington, DC 20546
Images of Venus taken at 418 (violet) and 986 [near-infrared (NIR)] nanometers show that the morphology and motions of large-scale features change with depth in the cloud deck. Poleward meridional velocities, seen in both spectral regions, are much reduced in the NIR In the south polar region the markings in the two wavelength bands are strongly anticorrelated. The images follow the changing state of the upper cloud layer downwind of the subsolar point, and the zonal flow field shows a longitudinal periodicity that may be coupled to the formation of large-scale planetary waves. No optical lightning was detected.
Revised on June 21, 1991
Accepted on July 29, 1991
THIS ARTICLE HAS BEEN CITED BY OTHER ARTICLES:
- Wind Streaks on Venus: Clues to Atmospheric Circulation.
- R. Greeley, R. Greeley, G. Schubert, D. Limonadi, K. C. Bender, W. I. Newman, P. E. Thomas, C. M. Weitz, and S. D. Wall (1994)
Science
263, 358-361
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- A Global Traveling Wave on Venus.
- M. D. Smith, P. J. Gierasch, and P. J. Schinder (1992)
Science
256, 652-655
| Abstract »
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- Galileo Infrared Imaging Spectroscopy Measurements at Venus.
- R. W. Carlson, R. W. CARLSON, K. H. BAINES, TH. ENCRENAZ, F. W. TAYLOR, P. DROSSART, L. W. KAMP, J. B. POLLACK, E. LELLOUCH, A. D. COLLARD, et al. (1991)
Science
253, 1541-1548
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