Roger J. Phillips Explained

Roger J. Phillips
Birth Name:Roger Jay Phillips
Birth Date:9 June 1940
Death Date:[1]
Death Place:Longmont, Colorado
Citizenship:United States
Fields:Geophysics, planetary science
Workplaces:Jet Propulsion Laboratory, Lunar and Planetary Institute, Southern Methodist University, Washington University in St. Louis, Southwest Research Institute
Alma Mater:Colorado School of MinesUniversity of California, Berkeley
Awards:Fellow American Geophysical Union, G K Gilbert Award (2003), Whipple Award (2008)
Thesis Title:An Investigation of Dipole Radiation in the Lunar Environment.
Thesis Year:1968
Thesis Url:http://oskicat.berkeley.edu/record=b14307219~S1
Doctoral Advisor:Stanley Harry Ward
Doctoral Students:Suzanne Smrekar, Steve Mueller, Robert Herrick, Jennifer Kidder, Mark Wieczorek, Richard Albert, Rebecca Williams, Steven A. Hauck, II, Daniel Nunes, Brian Hynek, Mindi Searls, Surdas Mohit, Jeff Andrews-Hanna

Roger Jay Phillips (June 9, 1940 – November 19, 2020) was an American geophysicist, planetary scientist, and professor emeritus[2] [3] at the Washington University in St. Louis. His research interests included the geophysical structure of planets, and the use of radar and gravity to investigate the surfaces and interiors of the planets.

Career

Roger J. Phillips received his Ph.D. in 1968 from the University of California, Berkeley where he studied with Stan Ward. Following graduate school he worked at the Jet Propulsion Laboratory. His work at JPL included being the team leader for the Apollo 17 Lunar Sounder Experiment (ALSE).[4] Phillips then served as the Director[5] [6] of the Lunar and Planetary Institute before moving to Southern Methodist University, and later to Washington University in St. Louis where he served as a Professor and as Director of the McDonnell Center for the Space Sciences at the university.

Phillips worked on several spacecraft missions such as Magellan, Mars Global Surveyor,[7] Mars Reconnaissance Orbiter,[8] and MESSENGER.[9]

Phillips served as the editor[10] of Geophysical Research Letters and co-edited the books the Origin of the Moon[11] and Venus II.[12]

Phillips was a fellow[13] of the American Geophysical Union, received the G. K. Gilbert Award from the Geological Society of America in 2003[14] and the Whipple Award from the American Geophysical Union in 2008[15]

Scientific contributions

Phillips' early work determined that the mascons on the Moon that perturbed the trajectory of early lunar orbiters was the result of near surface structure of impact basins[16] and made some of the early estimates of the thickness of the crust of Mars[17] prior to the Viking orbiters.

Using the Apollo 17 Lunar Sounder Experiment data Phillips and his team collected they made the first observations of near surface variations in rock layers on the Moon.[18]

Phillips is well-known for his contributions to understanding the tectonics,[19] impact craters and resurfacing history[20] [21] and the interior and crustal evolution[22] of Venus.

Phillips is also known for explaining how the growth of the massive Tharsis volcanic province on Mars shaped the entire planet and influenced the pattern of precipitation runoff on early Mars[23] and demonstrating how the lithosphere of Mars under the north pole of the planet is not deflected by the massive polar caps.[24] He also demonstrated that there are CO2 ice deposits within the southern polar cap of Mars.[25]

Notes and References

  1. Web site: Obituary: Roger Phillips, professor emeritus in Arts & Sciences, 80. Ogliore. Talia. source.wustl.edu. 25 November 2020. 2020-11-26.
  2. Web site: Roger J. Phillips Department of Earth and Planetary Sciences. eps.wustl.edu. 2018-10-18.
  3. News: Climate change on Mars topic of 2015 McDonnell Distinguished Lecture The Source Washington University in St. Louis. 2015-04-08. The Source. 2018-10-18.
  4. 1973LPSC....4.2821P Page 2821. Lunar and Planetary Science Conference Proceedings. 4. 2821. 1973LPSC....4.2821P. Phillips. R. J.. Adams. G. F.. Brown. W. E.. Eggleton. R. E.. Jackson. P.. Jordan. R.. Peeples. W. J.. Porcello. L. J.. Ryu. J.. Schaber. G.. Sill. W. R.. Thompson. T. W.. Ward. S. H.. Zelenka. J. S.. 1973.
  5. Web site: LPI 50th Anniversary. www.lpi.usra.edu. 2018-10-18.
  6. Web site: LPI Celebrates 40 Years. www.lpi.usra.edu. 2018-10-18.
  7. Web site: Mars Orbiter Laser Altimeter Science Team. tharsis.gsfc.nasa.gov. 2018-10-18.
  8. Web site: SHARAD - Mars Reconnaissance Orbiter. NASA. JPL. mars.nasa.gov. 2018-10-18.
  9. Web site: MESSENGER Science Team. messenger.jhuapl.edu. 2018-10-18.
  10. Web site: Previous Editors of Geophysical Research Letters . agupubs.onlinelibrary.wiley.com. 10.1002/(ISSN)1944-8007 . 2018-10-18.
  11. Book: Origin of the moon. 1986. Lunar & Planetary Institute. Hartmann, William K., Phillips, R. J. (Roger J.), 1940-, Taylor, G. Jeffrey, 1944-, Conference on the Origin of the Moon (1984 : Kailua Kona, Hawaii). 978-0942862034. Houston. 13525460. registration.
  12. Book: Venus II--geology, geophysics, atmosphere, and solar wind environment. 1997. University of Arizona Press. Bougher, S. W. (Stephen Wesley), 1955-, Hunten, Donald M., Phillips, R. J. (Roger J.), 1940-. 978-0816518302. Tucson, Ariz.. 37315367.
  13. News: AGU Honors - Roger Phillips. Honors Program. 2018-10-18.
  14. Web site: Geological Society of America - 2003 G.K. Gilbert Award - Citation & Response. www.geosociety.org. 2018-10-18.
  15. News: Phillips Receives 2008 Whipple Award - Honors Program. Honors Program. 2018-10-18.
  16. Phillips. R. J.. Conel. J. E.. Abbott. E. A.. Sjogren. W. L.. Morton. J. B.. 1972-12-10. Mascons: Progress toward a unique solution for mass distribution. Journal of Geophysical Research. 77. 35. 7106–7114. 10.1029/jb077i035p07106. 0148-0227. 1972JGR....77.7106P.
  17. Phillips. R. J.. Saunders. R. S.. Conel. J. E.. 1973-08-10. Mars: Crustal structure inferred from Bouguer gravity anomalies. Journal of Geophysical Research. 78. 23. 4815–4820. 10.1029/jb078i023p04815. 0148-0227. 1973JGR....78.4815P.
  18. Maxwell. Ted A.. Phillips. R. J.. 1978-09-03. Stratigraphic correlation of the radar-detected subsurface interface in Mare Crisium. Geophysical Research Letters. 5. 9. 811–814. 10.1029/gl005i009p00811. 0094-8276. 1978GeoRL...5..811M.
  19. Phillips. R. J.. Kaula. W. M.. McGill. G. E.. Malin. M. C.. 1981-05-22. Tectonics and Evolution of Venus. Science. 212. 4497. 879–887. 10.1126/science.212.4497.879. 0036-8075. 17830175. 1981Sci...212..879P.
  20. Phillips. Roger J.. Arvidson. Raymond E.. Boyce. Joseph M.. Campbell. Donald B.. Guest. John E.. Schaber. Gerald G.. Soderblom. Laurence A.. 1991-04-12. Impact Craters on Venus: Initial Analysis from Magellan. Science. 252. 5003. 288–297. 10.1126/science.252.5003.288. 0036-8075. 17769276. 1991Sci...252..288P. 3027097.
  21. Phillips. Roger J.. Raubertas. Richard F.. Arvidson. Raymond E.. Sarkar. Ila C.. Herrick. Robert R.. Izenberg. Noam. Grimm. Robert E.. 1992. Impact craters and Venus resurfacing history. Journal of Geophysical Research. 97. E10. 15923. 10.1029/92je01696. 0148-0227. 1992JGR....9715923P.
  22. Phillips. Roger J.. Hansen. Vicki L.. 1998-03-06. Geological Evolution of Venus: Rises, Plains, Plumes, and Plateaus. Science. 279. 5356. 1492–1497. 10.1126/science.279.5356.1492. 0036-8075. 1998Sci...279.1492P. 10.1.1.129.6513.
  23. Phillips. Roger J.. Zuber. Maria T.. Solomon. Sean C.. Golombek. Matthew P.. Jakosky. Bruce M.. Banerdt. W. Bruce. Smith. David E.. Williams. Rebecca M. E.. Hynek. Brian M.. 2001-03-30. Ancient Geodynamics and Global-Scale Hydrology on Mars. Science. 291. 5513. 2587–2591. 10.1126/science.1058701. 0036-8075. 11283367. 2001Sci...291.2587P. 36779757.
  24. Phillips. Roger J.. Zuber. Maria T.. Smrekar. Suzanne E.. Mellon. Michael T.. Head. James W.. Tanaka. Kenneth L.. Putzig. Nathaniel E.. Milkovich. Sarah M.. Campbell. Bruce A.. 2008-05-30. Mars North Polar Deposits: Stratigraphy, Age, and Geodynamical Response. Science. 320. 5880. 1182–1185. 10.1126/science.1157546. 0036-8075. 18483402. 2008Sci...320.1182P. 10.1.1.654.3236. 6670376.
  25. Phillips. Roger J.. Davis. Brian J.. Tanaka. Kenneth L.. Byrne. Shane. Mellon. Michael T.. Putzig. Nathaniel E.. Haberle. Robert M.. Kahre. Melinda A.. Campbell. Bruce A.. 2011-05-13. Massive CO2 Ice Deposits Sequestered in the South Polar Layered Deposits of Mars. Science. 332. 6031. 838–841. 10.1126/science.1203091. 0036-8075. 21512003. 2011Sci...332..838P. 11573/496472 . 1300107.

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