Structure of the atmosphere of Jupiter: Galileo probe measurements

Science

Volumn 272, Issue 5263, 1996, Pages 844-845

  Seiff, Alvin ^a   Kirk, Donn B ^b   Knight, Tony C D ^b   Mihalov, John D ^c   Blanchard, Robert C ^d   Young, Richard E ^c   Schubert, Gerald ^e   Von Zahn, Ulf ^f   Lehmacher, Gerald ^g   Milos, Frank S ^c   Wang, Jerry ^c  

^a SAN JOSE STATE UNIVERSITY   (United States)

^b NASA Ames Research Center ^*  (United States)

^c NASA AMES RESEARCH CENTER   (United States)

^d NASA LANGLEY RESEARCH CENTER   (United States)

^e UNIVERSITY OF CALIFORNIA   (United States)

^f UNIVERSITY OF ROSTOCK   (Germany)

^g NASA GODDARD SPACE FLIGHT CENTER   (United States)

Author keywords

[No Author keywords available]

Indexed keywords

EID: 4243108527     PISSN: 00368075     EISSN: None     Source Type: Journal    
DOI: 10.1126/science.272.5263.844     Document Type: Article

References (26)

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3. 3.
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9. For pressures between 5 and 17 bars, pressure sensor offsets were selected with guidance from sensors in the helium abundance detector (HAD). The HAD sensors, mounted in a block of nearly solid beryllium, experienced a smaller temperature range (254 to 301 K) than did the atmospheric structure instrument (ASI) sensors.
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15. The upper atmospheric data period, 240 s, was dictated by probe memory capacity and ended at the start of parachute descent. Thus, the unplanned 53-s delay in the start of descent [R. E. Young, M. A. Smith, C. K. Sobeck, Science 272, 837 (1996)] also delayed the start of entry data acquisition. With ontime deployment, the threshold would have been at the 3-μg level
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21. As an initial assumption, the mean molecular mass used was a lower atmospheric value, 2.215. The upper atmosphere is believed to be dominated by molecular hydrogen [S. K. Atreya, T. M. Donahue, M. C. Festou, Astrophys. J. 247, L43 (1981)]. Temperatures at the higher altitudes in Fig. 5 may thus be up to 10% too high.
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26. We thank J. Lepetich and L. Yee, who served as ASI managers, for their contributions to this experiment. We also thank E. Tischler, C. Sobeck, and numerous other Probe Project Office personnel and those who contributed to the instrument design and development at Martin Marietta Aerospace and at Bell Aerospace.