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  • Philip Christensen

Acidic weathering of basalt and basaltic glass: 1. Near-infrared spectra, thermal infrared spectra, and implications for Mars

Horgan, B. H. N., Smith, R. J., Cloutis, E. A., Mann, P. & Christensen, P., Jan 1 2017, In : Journal of Geophysical Research: Planets. 122, 1, p. 172-202 31 p.

Research output: Contribution to journalArticle

9 Scopus citations

Acid weathering of basalt and basaltic glass: 2. Effects of microscopic alteration textures on spectral properties

Smith, R. J., Horgan, B. H. N., Mann, P., Cloutis, E. A. & Christensen, P., Jan 1 2017, In : Journal of Geophysical Research: Planets. 122, 1, p. 203-227 25 p.

Research output: Contribution to journalArticle

2 Scopus citations

A Complex Fluviolacustrine Environment on Early Mars and Its Astrobiological Potentials

Huang, J., Salvatore, M. R., Edwards, C. S., Harris, R. L. & Christensen, P., Aug 1 2018, In : Astrobiology. 18, 8, p. 1081-1091 11 p.

Research output: Contribution to journalArticle

2 Scopus citations

Allophane detection on Mars with Thermal Emission spectrometer data and implications for regional-scale chemical weathering processes

Rampe, E. B., Kraft, M. D., Sharp, T., Golden, D. C., Ming, D. W. & Christensen, P., Nov 1 2012, In : Geology. 40, 11, p. 995-998 4 p.

Research output: Contribution to journalArticle

26 Scopus citations

Ancient volcanism and its implication for thermal evolution of Mars

Xiao, L., Huang, J., Christensen, P., Greeley, R., Williams, D., Zhao, J. & He, Q., Mar 15 2012, In : Earth and Planetary Science Letters. 323-324, p. 9-18 10 p.

Research output: Contribution to journalArticle

29 Scopus citations
5 Scopus citations

An impact origin for hydrated silicates on Mars: A synthesis

Tornabene, L. L., Osinski, G. R., McEwen, A. S., Wray, J. J., Craig, M. A., Sapers, H. M. & Christensen, P., Aug 28 2013, In : Journal of Geophysical Research E: Planets. 118, 5, p. 994-1012 19 p.

Research output: Contribution to journalArticle

31 Scopus citations

Asteroid (101955) 1999 RQ36: Spectroscopy from 0.4 to 2.4μm and meteorite analogs

Clark, B. E., Binzel, R. P., Howell, E. S., Cloutis, E. A., Ockert-Bell, M., Christensen, P., Barucci, M. A., DeMeo, F., Lauretta, D. S., Connolly, H., Soderberg, A., Hergenrother, C., Lim, L., Emery, J. & Mueller, M., Dec 1 2011, In : Icarus. 216, 2, p. 462-475 14 p.

Research output: Contribution to journalArticle

93 Scopus citations

Bounce Rock-A shergottite-like basalt encountered at Meridiani Planum, Mars

Zipfel, J., Schröder, C., Jolliff, B. L., Gellert, R., Herkenhoff, K. E., Rieder, R., Anderson, R., Bell, J., Brückner, J., Crisp, J. A., Christensen, P., Clark, B. C., De Souza, P. A., Dreibus, G., D'uston, C., Economou, T., Gorevan, S. P., Hahn, B. C., Klingelhöfer, G., Mccoy, T. J. & 9 others, Mcsween, H. Y., Ming, D. W., Morris, R. V., Rodionov, D. S., Squyres, S. W., Wänke, H., Wright, S. P., Wyatt, M. B. & Yen, A. S., Jan 1 2011, In : Meteoritics and Planetary Science. 46, 1, p. 1-20 20 p.

Research output: Contribution to journalArticle

33 Scopus citations

Bulk mineralogy of the NE Syrtis and Jezero crater regions of Mars derived through thermal infrared spectral analyses

Salvatore, M. R., Goudge, T. A., Bramble, M. S., Edwards, C. S., Bandfield, J. L., Amador, E. S., Mustard, J. F. & Christensen, P., Feb 1 2018, In : Icarus. 301, p. 76-96 21 p.

Research output: Contribution to journalArticle

11 Scopus citations

Characteristics, distribution, origin, and significance of opaline silica observed by the Spirit rover in Gusev crater, Mars

Ruff, S., Farmer, J., Calvin, W. M., Herkenhoff, K. E., Johnson, J. R., Morris, R. V., Rice, M. S., Arvidson, R. E., Bell, J., Christensen, P. & Squyres, S. W., May 4 2011, In : Journal of Geophysical Research E: Planets. 116, 4, E00F23.

Research output: Contribution to journalArticle

107 Scopus citations

Coils and polygonal crust in the Athabasca Valles region, Mars, as evidence for a volcanic history

Ryan, A. J. & Christensen, P., Apr 27 2012, In : Science. 336, 6080, p. 449-452 4 p.

Research output: Contribution to journalArticle

17 Scopus citations

Determining olivine composition of basaltic dunes in Gale Crater, Mars, from orbit: Awaiting ground truth from Curiosity

Lane, M. D. & Christensen, P., Jul 28 2013, In : Geophysical Research Letters. 40, 14, p. 3517-3521 5 p.

Research output: Contribution to journalArticle

19 Scopus citations

Estimation of dynamic parameters of MODIS NDVI time series nonlinear model using particle filtering

Chakraborty, S., Banerjee, A., Gupta, S., Papandreou-Suppappola, A. & Christensen, P., Dec 1 2017, 2017 IEEE International Geoscience and Remote Sensing Symposium: International Cooperation for Global Awareness, IGARSS 2017 - Proceedings. Institute of Electrical and Electronics Engineers Inc., Vol. 2017-July. p. 1091-1094 4 p. 8127146

Research output: Chapter in Book/Report/Conference proceedingConference contribution

2 Scopus citations

Evidence for an explosive origin of central pit craters on Mars

Williams, N. R., Bell, J., Christensen, P. & Farmer, J., May 5 2015, In : Icarus. 252, p. 175-185 11 p.

Research output: Contribution to journalArticle

9 Scopus citations

Evidence for mechanical and chemical alteration of iron-nickel meteorites on Mars: Process insights for Meridiani Planum

Ashley, J. W., Golombek, M. P., Christensen, P., Squyres, S. W., McCoy, T. J., Schröder, C., Fleischer, I., Johnson, J. R., Herkenhoff, K. E. & Parker, T. J., Apr 27 2011, In : Journal of Geophysical Research E: Planets. 116, 4, E00F20.

Research output: Contribution to journalArticle

14 Scopus citations

Evidence for widespread aqueous sedimentation in the northern plains of Mars

Salvatore, M. R. & Christensen, P., 2014, In : Geology. 42, 5, p. 423-426 4 p.

Research output: Contribution to journalArticle

13 Scopus citations

Evidence for widespread hydrated minerals on asteroid (101955) Bennu

The OSIRIS-REx Team, Apr 1 2019, In : Nature Astronomy. 3, 4, p. 332-340 9 p.

Research output: Contribution to journalArticle

38 Scopus citations

Flank vents and graben as indicators of Late Amazonian volcanotectonic activity on Olympus Mons

Peters, S. I. & Christensen, P., Mar 1 2017, In : Journal of Geophysical Research: Planets. 122, 3, p. 501-523 23 p.

Research output: Contribution to journalArticle

3 Scopus citations

History of Mars atmosphere observations

James, P. B., Christensen, P., Clancy, R. T., Lemmon, M. T. & Withers, P., Jun 29 2017, The Atmosphere and Climate of Mars. Cambridge University Press, p. 20-41 22 p.

Research output: Chapter in Book/Report/Conference proceedingChapter

1 Scopus citations

Identification and mapping of dikes with relatively primitive compositions in Thaumasia Planum on Mars: Implications for Tharsis volcanism and the opening of Valles Marineris

Huang, J., Edwards, C. S., Horgan, B. H. N., Christensen, P., Kraft, M. D. & Xiao, L., Sep 16 2012, In : Geophysical Research Letters. 39, 17, L17201.

Research output: Contribution to journalArticle

5 Scopus citations

Io Volcano Observer's (IVO) integrated approach to optimizing system design for radiation challenges

Adams, E., Hibbard, K., Turtle, E., Reynolds, E., Anderson, B., Paranicas, C., Rogers, G., McAdams, J., Roth, D., Christensen, P., McEwen, A., Wieser, M., Thomas, N., Wurz, P. & Janesick, J., May 22 2012, 2012 IEEE Aerospace Conference. 6187177. (IEEE Aerospace Conference Proceedings).

Research output: Chapter in Book/Report/Conference proceedingConference contribution

23 Scopus citations

Low-temperature specific heat capacity measurements and application to Mars thermal modeling

Vu, T. H., Piqueux, S., Choukroun, M., Edwards, C. S., Christensen, P. & Glotch, T. D., Mar 15 2019, In : Icarus. 321, p. 824-840 17 p.

Research output: Contribution to journalArticle

1 Scopus citations
2 Scopus citations

Mars student imaging project: Real research by secondary students

Boonstra, S. K. & Christensen, P., Feb 22 2013, In : Science. 339, 6122, p. 920-921 2 p.

Research output: Contribution to journalShort survey

4 Scopus citations

Mosaicking of global planetary image datasets: 1. Techniques and data processing for Thermal Emission Imaging System (THEMIS) multi-spectral data

Edwards, C. S., Nowicki, K. J., Christensen, P., Hill, J., Gorelick, N. & Murray, K., Nov 10 2011, In : Journal of Geophysical Research E: Planets. 116, 10, E10008.

Research output: Contribution to journalArticle

112 Scopus citations
14 Scopus citations

Observations and preliminary science results from the first 100 sols of MSL Rover Environmental Monitoring Station ground temperature sensor measurements at Gale Crater

Hamilton, V. E., Vasavada, A. R., Sebastián, E., De La Torre Juárez, M., Ramos, M., Armiens, C., Arvidson, R. E., Carrasco, I., Christensen, P., De Pablo, M. A., Goetz, W., Gõmez-Elvira, J., Lemmon, M. T., Madsen, M. B., Martín-Torres, F. J., Martínez-Frías, J., Molina, A., Palucis, M. C., Rafkin, S. C. R., Richardson, M. I. & 2 others, Yingst, R. A. & Zorzano, M. P., Apr 2014, In : Journal of Geophysical Research E: Planets. 119, 4, p. 745-770 26 p.

Research output: Contribution to journalArticle

41 Scopus citations

On the origin of the Vastitas Borealis Formation in Chryse and Acidalia Planitiae, Mars

Salvatore, M. R. & Christensen, P., 2014, In : Journal of Geophysical Research: Planets. 119, 12, p. 2437-2456 20 p.

Research output: Contribution to journalArticle

13 Scopus citations

OSIRIS-REx: Sample Return from Asteroid (101955) Bennu

Lauretta, D. S., Balram-Knutson, S. S., Beshore, E., Boynton, W. V., Drouet D’Aubigny, C., DellaGiustina, D. N., Enos, H. L., Golish, D. R., Hergenrother, C. W., Howell, E. S., Bennett, C. A., Morton, E. T., Nolan, M. C., Rizk, B., Roper, H. L., Bartels, A. E., Bos, B. J., Dworkin, J. P., Highsmith, D. E., Lorenz, D. A. & 28 others, Lim, L. F., Mink, R., Moreau, M. C., Nuth, J. A., Reuter, D. C., Simon, A. A., Bierhaus, E. B., Bryan, B. H., Ballouz, R., Barnouin, O. S., Binzel, R. P., Bottke, W. F., Hamilton, V. E., Walsh, K. J., Chesley, S. R., Christensen, P., Clark, B. E., Connolly, H. C., Crombie, M. K., Daly, M. G., Emery, J. P., McCoy, T. J., McMahon, J. W., Scheeres, D. J., Messenger, S., Nakamura-Messenger, K., Righter, K. & Sandford, S. A., Aug 28 2017, (Accepted/In press) In : Space Science Reviews. p. 1-60 60 p.

Research output: Contribution to journalArticle

117 Scopus citations

Planning for mars returned sample science: Final report of the MSR end-to-end international science analysis group (E2E-iSAG)

McLennan, S., Sephton, M., Beaty, D., Hecht, M., Pepin, B., Leya, I., Jones, J., Weiss, B., Race, M., Rummel, J., Buxbaum, K., Conley, C., Backes, P., Hemming, S., Pierce, E., Rasbury, T., Jakosky, B., Mahaffy, P., Bass, D., Bridges, J. & 22 others, Budney, C., Christensen, P., Coleman, M., Fernández-Remolar, D., Glavin, D., Goesmann, F., Grotzinger, J., Javaux, E., Johnson, J., May, L., McSween, H., Morris, D., Mustard, J., Niles, P., Papike, J., Smith, C., Steele, A., Velbel, M., Westall, F., Whetsel, C., Wray, J. & Zurek, R., Mar 1 2012, In : Astrobiology. 12, 3, p. 175-230 56 p.

Research output: Contribution to journalReview article

41 Scopus citations

Post-projection removal of row- and column-correlated noise in line-scanning data: Application to THEMIS infrared data

Nowicki, K. J., Edwards, C. S. & Christensen, P., Oct 23 2017, 2013 5th Workshop on Hyperspectral Image and Signal Processing: Evolution in Remote Sensing, WHISPERS 2013. IEEE Computer Society, Vol. 2013-June. 8080692

Research output: Chapter in Book/Report/Conference proceedingConference contribution

3 Scopus citations

Properties of rubble-pile asteroid (101955) Bennu from OSIRIS-REx imaging and thermal analysis

The OSIRIS-REx Team, Apr 1 2019, In : Nature Astronomy. 3, 4, p. 341-351 11 p.

Research output: Contribution to journalArticle

29 Scopus citations
Open Access
1 Scopus citations

Recurring slope lineae and chlorides on the surface of Mars

Mitchell, J. L. & Christensen, P., Aug 1 2016, In : Journal of Geophysical Research E: Planets. 121, 8, p. 1411-1428 18 p.

Research output: Contribution to journalArticle

7 Scopus citations

Region of interest aware compressive sensing of THEMIS images and its reconstruction quality

Chakraborty, S., Banerjee, A., Gupta, S. & Christensen, P., Jun 25 2018, 2018 IEEE Aerospace Conference, AERO 2018. IEEE Computer Society, Vol. 2018-March. p. 1-11 11 p.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

5 Scopus citations

Removal of salt-and-pepper noise in THEMIS infrared radiance and emissivity spectral data of the martian surface

Nowicki, K. J., Edwards, C. S. & Christensen, P., Oct 23 2017, 2013 5th Workshop on Hyperspectral Image and Signal Processing: Evolution in Remote Sensing, WHISPERS 2013. IEEE Computer Society, Vol. 2013-June. 8080598

Research output: Chapter in Book/Report/Conference proceedingConference contribution

1 Scopus citations

Shape of (101955) Bennu indicative of a rubble pile with internal stiffness

The OSIRIS-REx Team, Apr 1 2019, In : Nature Geoscience. 12, 4, p. 247-252 6 p.

Research output: Contribution to journalArticle

23 Scopus citations

Temperature-dependent thermal inertia of homogeneous Martian regolith

Piqueux, S. & Christensen, P., Aug 4 2011, In : Journal of Geophysical Research E: Planets. 116, 7, E07004.

Research output: Contribution to journalArticle

28 Scopus citations

The dynamic geophysical environment of (101955) Bennu based on OSIRIS-REx measurements

The OSIRIS-REx Team, Apr 1 2019, In : Nature Astronomy. 3, 4, p. 352-361 10 p.

Research output: Contribution to journalArticle

30 Scopus citations

The formation of infilled craters on Mars: Evidence for widespread impact induced decompression of the early martian mantle?

Edwards, C. S., Bandfield, J. L., Christensen, P. & Rogers, A. D., Jan 15 2014, In : Icarus. 228, p. 149-166 18 p.

Research output: Contribution to journalArticle

18 Scopus citations

The geologic history of Margaritifer basin, Mars

Salvatore, M. R., Kraft, M. D., Edwards, C. S. & Christensen, P., 2016, (Accepted/In press) In : Journal of Geophysical Research E: Planets.

Research output: Contribution to journalArticle

8 Scopus citations

The location of Airy-0, the Mars prime meridian reference, from stereo photogrammetric processing of THEMIS IR imaging and digital elevation data

Duxbury, T. C., Christensen, P., Smith, D. E., Neumann, G. A., Kirk, R. L., Caplinger, M. A., Albee, A. A., Seregina, N. V., Neukum, G. & Archinal, B. A., Dec 2014, In : Journal of Geophysical Research: Planets. 119, 12, p. 2471-2486 16 p.

Research output: Contribution to journalArticle

4 Scopus citations

THEMIS-VIS Investigations of Sand at Gale Crater

Bennett, K. A., Hill, J. R., Murray, K. C., Edwards, C. S., Bell, J. & Christensen, P., Aug 1 2018, In : Earth and Space Science. 5, 8, p. 352-363 12 p.

Research output: Contribution to journalArticle

The operational environment and rotational acceleration of asteroid (101955) Bennu from OSIRIS-REx observations

The OSIRIS-REx Team, Dec 1 2019, In : Nature communications. 10, 1, 1291.

Research output: Contribution to journalArticle

Open Access
17 Scopus citations

The OSIRIS-REx Thermal Emission Spectrometer (OTES) Instrument

Christensen, P., Hamilton, V. E., Mehall, G. L., Pelham, D., O’Donnell, W., Anwar, S., Bowles, H., Chase, S., Fahlgren, J., Farkas, Z., Fisher, T., James, O., Kubik, I., Lazbin, I., Miner, M., Rassas, M., Schulze, L., Shamordola, K., Tourville, T., West, G. & 2 others, Woodward, R. & Lauretta, D., Aug 1 2018, In : Space Science Reviews. 214, 5, 87.

Research output: Contribution to journalReview article

24 Scopus citations

The sustainability of habitability on terrestrial planets: Insights, questions, and needed measurements from Mars for understanding the evolution of Earth-like worlds

Ehlmann, B. L., Anderson, F. S., Andrews-Hanna, J., Catling, D. C., Christensen, P., Cohen, B. A., Dressing, C. D., Edwards, C. S., Elkins-Tanton, L., Farley, K. A., Fassett, C. I., Fischer, W. W., Fraeman, A. A., Golombek, M. P., Hamilton, V. E., Hayes, A. G., Herd, C. D. K., Horgan, B., Hu, R., Jakosky, B. M. & 26 others, Johnson, J. R., Kasting, J. F., Kerber, L., Kinch, K. M., Kite, E. S., Knutson, H. A., Lunine, J. I., Mahaffy, P. R., Mangold, N., McCubbin, F. M., Mustard, J. F., Niles, P. B., Quantin-Nataf, C., Rice, M. S., Stack, K. M., Stevenson, D. J., Stewart, S. T., Toplis, M. J., Usui, T., Weiss, B. P., Werner, S. C., Wordsworth, R. D., Wray, J. J., Yingst, R. A., Yung, Y. L. & Zahnle, K. J., Oct 1 2016, In : Journal of Geophysical Research: Planets. 121, 10, p. 1927-1961 35 p.

Research output: Contribution to journalReview article

26 Scopus citations