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Clark R. Chapman
Researcher at Southwest Research Institute
Publications - 424
Citations - 17347
Clark R. Chapman is an academic researcher from Southwest Research Institute. The author has contributed to research in topics: Asteroid & Impact crater. The author has an hindex of 76, co-authored 423 publications receiving 16243 citations. Previous affiliations of Clark R. Chapman include Science Applications International Corporation & Planetary Science Institute.
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Journal ArticleDOI
Evidence for a subsurface ocean on Europa
Michael H. Carr,M. J. S. Belton,Clark R. Chapman,Merton E. Davies,Paul Geissler,Richard Greenberg,Alfred S. McEwen,Bruce R. Tufts,Ronald Greeley,Robert Sullivan,James W. Head,Robert T. Pappalardo,Kenneth P. Klaasen,Torrence V. Johnson,James M. Kaufman,David Senske,Jeffrey M. Moore,Gerhard Neukum,Gerald Schubert,Joseph A. Burns,Peter C. Thomas,Joseph Veverka +21 more
TL;DR: High-resolution Galileo spacecraft images of Europa are presented, in which evidence for mobile ‘icebergs’ is found and the detailed morphology of the terrain strongly supports the presence of liquid water at shallow depths below the surface, either today or at some time in the past.
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Planetesimals to planets: Numerical simulation of collisional evolution
TL;DR: In this paper, a simulation of collisional and gravitational interaction in the early solar system, planets of approximately 500 km diameter are generated from an initial swarm of kilometer-sized planetesimals.
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Does Europa have a subsurface ocean? Evaluation of the geological evidence
Robert T. Pappalardo,M. J. S. Belton,H. Herbert Breneman,Michael H. Carr,Clark R. Chapman,Geoffrey C. Collins,Tilmann Denk,Sarah A. Fagents,Paul Geissler,Bernd Giese,Ronald Greeley,Richard Greenberg,James W. Head,Paul Helfenstein,Gregory V. Hoppa,S. D. Kadel,Kenneth P. Klaasen,James E. Klemaszewski,K. Magee,K. Magee,Alfred S. McEwen,Jeffrey M. Moore,William B. Moore,Gerhard Neukum,Cynthia B. Phillips,Louise M. Prockter,Gerald Schubert,David A. Senske,David A. Senske,R. J. Sullivan,B. R. Tufts,Elizabeth P. Turtle,Robert Wagner,K. K. Williams +33 more
TL;DR: In this article, the authors summarize the geological evidence regarding an extant subsurface ocean, concentrating on Galileo imaging data and assess nine pertinent lines of geological evidence: impact morphologies, lenticulae, cryovolcanic features, pull-apart bands, chaos, ridges, surface frosts, topography, and global tectonics.
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The MESSENGER mission to Mercury: Scientific objectives and implementation
Sean C. Solomon,Ralph L. McNutt,Robert E. Gold,Mario H. Acuña,Daniel N. Baker,William V. Boynton,Clark R. Chapman,Andrew F. Cheng,George Gloeckler,George Gloeckler,James W. Head,Stamatios M. Krimigis,William E. McClintock,Scott L. Murchie,Stanton J. Peale,Roger J. Phillips,Mark S. Robinson,James A. Slavin,David E. Smith,Robert G. Strom,Jacob I. Trombka,Maria T. Zuber +21 more
TL;DR: The MErcury Surface, Space ENvironment, GEochemistry, and Ranging (MESSENGER) mission has been designed to fly by and orbit Mercury to address several critical questions regarding the formation and evolution of the terrestrial planets as mentioned in this paper.
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Impacts on the Earth by asteroids and comets: assessing the hazard
Clark R. Chapman,David Morrison +1 more
TL;DR: There is a 1-in-10,000 chance that a large (∼2-km diameter) asteroid or comet will collide with the Earth during the next century, disrupting the ecosphere and killing a large fraction of the world's population as discussed by the authors.