Ahrens, Thomas J. and Takata, Toshiko and O'Keefe, John D. and Orton, Glenn S.
(1994)
Impact of comet Shoemaker-Levy 9 on Jupiter.
Geophysical Research Letters, 21
(11).
pp. 1087-1090.
ISSN 0094-8276.
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Abstract
Three-dimensional numerical simulations of the impact of Comet Shoemaker-Levy 9 on Jupiter and the resulting vapor plume expansion were conducted using the Smoothed Particle Hydrodynamics (SPH) method. An icy body with a diameter of 2 km can penetrate to an altitude of -350 km (0 km = 1 bar) and most of the incident kinetic energy is transferred to the atmosphere between -100 km to -250 km. This energy is converted to potential energy of the resulting gas plume. The unconfined plume expands vertically and has a peak radiative power approximately equal to the total radiation from Jupiter's disc. The plume rises a few tens of atmospheric scale heights in ∼10² seconds. The rising plume reaches the altitude of ∼3000 km, but no atmospheric gas is accelerated to the escape velocity (∼60 km/s).
Item Type: | Article |
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Additional Information: | © 1994 by the American Geophysical Union.
Paper number 94GL01325.
Received February 4, 1994; revised May 4, 1994; accepted May 5, 1994.
D. Stevenson, J. Spencer, K. Zahnle, T. Johnson, and G.
Ravichandran provided many helpful suggestions which we
appreciate. We thank K. Zahnle and M. MacLow, and G.
Field and A. Ferrara for their preprints, and P. Weissman, M.
A'Hearn, K. Ziemelis, and two anonymous reviewers for
helpful comments. Research supported by NASA and Cray
Research Corp. Contribution number 5381, Division of
Geological and Planetary Sciences. |
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Funders: | Funding Agency | Grant Number |
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NASA | UNSPECIFIED | Cray Research Corp. | UNSPECIFIED |
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Other Numbering System: | Other Numbering System Name | Other Numbering System ID |
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Caltech Division of Geological and Planetary Sciences | 5381 |
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Issue or Number: | 11 |
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Record Number: | CaltechAUTHORS:20141024-092020236 |
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Persistent URL: | https://resolver.caltech.edu/CaltechAUTHORS:20141024-092020236 |
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Usage Policy: | No commercial reproduction, distribution, display or performance rights in this work are provided. |
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ID Code: | 50771 |
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Collection: | CaltechAUTHORS |
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Deposited By: |
Tony Diaz
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Deposited On: | 24 Oct 2014 18:12 |
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Last Modified: | 03 Oct 2019 07:26 |
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