Dr. Brad Dalton works with spacecraft observations, laboratory measurements and field studies to understand the composition and distribution of surface deposits on planetary surfaces, and how they influence the formation and subsequent evolution of various worlds in the solar system. Brad has published papers on Venus, Earth, Mars, Europa, Callisto, Phoebe, Hyperion, and the rings of Saturn, but his techniques and capabilities are applicable to all of the solid bodies of the Solar System.

• BS Physics - Washington University, St. Louis. (1987)
• BS Computer Science - Washington University, St. Louis (1987)
• MS Astrophysical, Planetary and Atmospheric Sciences - University of Colorado, Boulder (1996)
• PhD Geophysics- University of Colorado, Boulder (2000)

• Composition of planetary surfaces
• Visible and Infrared imaging spectroscopy
• Cryogenic laboratory studies of icy satellite surface compunds

• Jet Propulsion Laboratory - Research Scientist (2007-present)
• SETI Institute - Principal Investigator (2003-2007)
• NASA Ames Research Center - National Research Council Resident Research Associate (2001-2003)
• University of Colorado - Graduate Teaching Assistant (1995-1996)
• U.S. Geological Survey, Crustal Imaging and Characterization Team, Branch of Geophysics, Denver, CO. - Geophysicist (1993-2001)
• NASA Ames Research Center, Mathematical Analyst, Synernet and Information Management International Corporations (1987-1992)
• Washington University, St. Louis, MO. - Undergraduate Research Assistant, McDonnell Center for Space Science (1983-1987)

• US Department of the Interior Cooperative Conservation Award (2008)
• National Academy of Sciences, National Research Council Fellow (2001-2003)
• National Merit Scholar, Washington University (1982-1986)

1. Dalton, J.B., Palmer-Moloney, L.J., Rogoff, D., Hlavka, C. and Duncan, C., Remote monitoring of hypersaline environments in San Francisco Bay, CA, USA, Intl. J. Rem. Sens., 30(11):2933-2949, 2009.
2. Shirley, J.H., Dalton, J.B., Prockter, L.M., Kamp, L.W., Europa’s ridged plains and smooth low albedo plains: Distinctive compositions and compositional gradients at the leading side – trailing side boundary, submitted to Icarus, 2009.
3. Pitman, K.M. and Dalton, J.B., Low temperature optical constants of some hydrated sulfates relevant to planetary surfaces, submitted to J. Geophys. Res.
4. Dalton, J.B., Spectroscopy of icy moon materials, in Icy Moons: Exchange Processes Involving the Interiors, Ed. O. Grasset, International Space Science Institute, in press.
5. Dalton, J.B., Cruikshank, D.P., Stephan, K., McCord, T.B., Coustenis, A., Carlson, R.W., Coradini, A., Chemical composition of icy satellite surfaces, in Icy Moons: Exchange Processes Involving the Interiors, Ed. O. Grasset, International Space Science Institute, in press.
6. Dalton, J.B., Shirley, J.H., Prockter, L.M., and L.W. Kamp, Compositional gradients of anti-Jovian surface units on Europa from despiked Galileo NIMS observations, Proc. Lunar Planet. Sci. XL, 2511, 2009.
Phillips, C.B. and J.B. Dalton, Combining Galileo SSI and NIMS spectra for Europa, Proc. Lunar Planet. Sci. XL, 1367, 2009.
7. Dalton, J.B., The surface composition of Europa: Implications for landed missions (invited), International Workshop “The Europa Lander: Science Goals and Experiments,” Space Research Institute (IKI), Russian Academy of Sciences, Moscow, Russia, Feb. 9-13, 2009.
8. Dalton, B., Spectroscopy of Planetary Ices in Support of Spacecraft Missions (invited), Moons of the Outer Solar System: Exchange Processes involving the Interiors, International Space Science Institute, Bern, Switzerland, 17-21 Nov. 2008.
9. Dalton, B., Water on the Moon? SPACE.com, http://www.space.com/searchforlife80605-seti-moon-water.html , June 5, 2008.
10. Dalton, J.B., Turnbull, M.C., and McKay, C.P., Spectral characterization of Atacama Desert soils for remote sensing applications, Proc. Astrobio. Sci. Conf, 28-03, Santa Clara, April 14-17, 2008.
11. Dalton, J.B. and D.P. Cruikshank, Evidence for hydrocarbons on the surface of Saturn’s moon Hyperion from Cassini VIMS, IAU Symposium 251: Organic Matter in Space, Hong Kong, Feb 18-22, 2008.
12. Dalton, J.B., Determination of Icy Satellite Surface Composition from Spacecraft Observations: Mission-Critical Cryogenic Laboratory Spectral Measurements, Proc. Lunar Planet. Sci. XXXIX, 1391, 2008.
13. Dalton, J.B., Mission-critical laboratory spectroscopy for modeling surface abundances on Outer Solar System satellites, Trans. Amer. Geophys. Union, #P13G-01, Fall 2007.
14. Dalton, J.B., Linear Mixture Modeling of Europa's Non-Ice Material Based Upon Cryogenic Laboratory Spectroscopy, Geophys. Res. Let., 34, L21205, doi:10.1029/2007GL031497, 2007.
15. Cruikshank, D.P., J.B. Dalton, C.M. Dalle Ore, J. Bauer, K. Stephan, G. Filacchione, A.R. Hendrix, C.J. Hansen, A. Coradini, P. Cerroni, F. Tosi, F. Capaccioni, R. Jaumann, B.J. Buratti, R.N. Clark, R.H. Brown, R.M. Nelson, T.B. McCord, K.H. Baines, P.D. Nicholson, C. Sotin, A.W. Meyer, G. Belluci, M. Combes, J.-P. Bibring, Y. Langevin, B. Sicardy, D.L. Matson, V. Formisano, P. Drossart, V. Mennella, Surface Composition of Hyperion, Nature 448(7149), 54-55, 2007.
16. Dalton, J.B., Icy Saturnian Satellite Surface Compositions: Mapping and Modeling, Lunar Planet. Sci. XXXVII, 2415, 2007.
17. Carlson, R.W., J.S. Kargel, S. Douté, L.A. Soderblom, and J.B. Dalton, Io's Surface Composition, in Io After Jupiter, eds. R.M.C. Lopes and J.R. Spencer, Springer-Praxis, Chichester UK, 2006.
18. Sutter, B., J.B. Dalton, S.A. Ewing, R. Amundson, and C.P. McKay, Terrestrial Analogs for Interpretation of Infrared Spectra from the Martian Surface and Subsurface: Sulfate, Nitrate, and Carbonate-bearing Atacama Desert Soils, J. Geophys. Res., 112, G04S10, doi: 10.1029/2006/JG000313, 2007.
19. Dalton, J.B., Searching for Organics and Other Volatile Ices at Enceladus, NAI Enceladus Focus Group, Oct. 7, 2006.
20. Dalton, J.B., Developing Strategies for Identifying Accessible Ecological Niches on Europa, Proc. Astrobio. Sci. Conf. 2006.
21. Dalton, J.B., Linear Mixing of Cryogenic Sulfate Hydrates Applied to Europa, NAI Europa Focus Group Wkshp., Feb. 27-28, 2006.
22. Dalton, J.B., O. Prieto-Ballesteros, C.S. Jamieson, J.S. Kargel, J. Jolivet, and R.C. Quinn, Spectral Comparison of Heavily Hydrated Salts to Disrupted Terrains on Europa, Icarus 177, 472-490 2005.
23. Dalton, J.B., Phoebe, Saturns Retrograde Renegade, Nature 435:7038, 33-34, 2005.
24. Dalton, J.B., L. Jean Palmer-Moloney, D. Rogoff, C. Hlavka, C. Duncan and C. Pehl, Hyperspectral Studies of Hypersaline Ecosystems, 10 pages, Proc. SPIE Rem. Sens. Europe Conf., 5977-2, 2005.
25. Emery, J.P., Burr, D.M., Cruikshank, D.P., Brown, R.H., and J.B. Dalton, Near-infrared (0.8-4.0μm) spectroscopy of Mimas, Enceladus, Tethys, and Rhea, Astronomy and Astrophysics, 435, 353-362, 2005.
26. Dalton, J.B., D.L. Bove, and C.S. Mladinich, Remote Sensing Characterization of the Animas River Watershed by AVIRIS Imaging Spectroscopy, 49 pages, USGS Scientific Investigations Report 2004-5203, U.S. Geological Survey, Denver, 2005. http://pubs.usgs.gov/sir/2004/5203/
27. Dalton, J.B., Heavily Hydrated Salts on Europa, Bull. Am. Astron. Soc. 37, 63.07, 2005.
28. Dalton, J.B., Jamieson, C.S., Quinn, R.C., Prieto-Ballesteros, O. and Kargel, J.S., Cryogenic Reflectance Spectroscopy of Highly Hydrated Sulfur-bearing Salts, Lunar Planet. Sci. XXXVI, 2280, 2005.
29. Sutter, B., J.B. Dalton, S.A. Ewing, R. Amundson, and C.P. McKay, Infrared Spectroscopic Analyses of Sulfate, Nitrate, and Carbonate-bearing Atacama Desert Soils: Analogs for the Interpretation of Infrared Spectra from the Martian Surface, Lunar Planet. Sci. XXXVI, 2182, 2005.
30. Dalton, J.B., D.L. Bove, C.S. Mladinich and B. Rockwell, Classification of Spectrally Similar Materials Using the Tetracorder Algorithm: The Calcite-Epidote-Chlorite Problem, Rem. Sens. Env. 89, 455-466, 2004.
31. Dalton, J.B., R. Mogul, H.K. Kagawa, S.L. Chan, and C.S. Jamieson, Near-Infrared Detection of Potential Evidence for Microscopic Organisms on Europa, Astrobiology 3, 505-529, 2003.
32. Dalton, J.B., and J.M. Moore, Compositional Study of a Fluvial Deposit in Eberswalde Crater, Mars, Bull. Amer. Astr. Soc., 34, 93, 2004.
33. Dalton, J.B., T.L. Roush, J. Emery, and D.P. Cruikshank, Tethys: Modeling of Near-Infrared Telescopic Observations, Eos Trans. AGU, 85(47), P31A-0958, 2004.
34. Dalton, J.B., C.S. Jamieson, R.C. Quinn, O. Prieto-Ballesteros and J. Kargel, Highly Hydrated Sulfate Salts as Spectral Analogs to Disrupted Terrains on Europa, Proceedings of the Workshop on Europa's Icy Shell: Past, Present, and Future, Feb 6-8, 2004, Houston, Texas, 7049, 2004.
35. Dalton, J.B., Sutter, B., Kramer, M.G., Stockstill, K.R., Moersch, J., and Moore, J.M., Search for evaporite minerals in Flaugergues Basin, Mars, Lunar Planet. Sci. XXXV, 1869, 2004.
36. Dalton, J.B., L.J. Palmer-Moloney, and D. Rogoff, Remote Monitoring of Wetlands Restoration in San Francisco Bay, Proceedings of the 12th JPL Airborne Earth Science Workshop, February 25-28, 2003.
37. Dalton, J.B., Spectral Behavior of Hydrated Sulfate Salts: Implications for Europa Mission Spectrometer Design, Astrobiology 3, 771-784, 2003.
38. Dalton, J.B., B. Sutter, M. Kramer, J. Moersch and J. Moore, Searching for Aqueous Mineralogy on Mars Utilizing a Surface Water Flow Model, Mars Global Surveyor and Mars Odyssey Data, Eos Trans. AGU, 84, F946, 2003.
39. Pitman, J., A. Duncan, D. Stubbs, R. Sigler, R. Kendrick, E. Smith, J. Mason, G. Delory, J. H. Lipps, M. Manga, J. Graham, I. de Pater, S. Rieboldt, E. Bierhaus, J.B. Dalton, J. Fienup, J. Yu, Remote Sensing Science Enabled by the Multiple Instrument Distributed Aperture Sensor (MIDAS) Concept, Proc. SPIE, Denver, CO, 5555-31, August 2004.
40. Stoker, C. R., L. Richter, W.H. Smith, L.G. Lemke, P. Hammer, J.B. Dalton, B. Glass and A. Zent, The Mars Underground Mole (MUM): A Subsurface Penetration Device with In Situ Infrared Reflectance and Raman Spectroscopic Sensing Capability, Lunar Planet. Sci. XXXIV, 1201, 2003.
41. Dalton, J.B., and J.L. Bishop, Micro-Spectroscopy as a Tool for Detecting Micron-Scale Mineral Variations Across a Rock Surface: An Example Using a Thin Section of Martian Meteorite ALH8400, Lunar Planet. Sci. XXXIV, 2066, 2003.
42. Moore, J.M., Bierhaus, B., Chapman, C., Chuang, F., Clark, R.N., Dalton, J.B., Greeley, R., Hibbitts, C., Klemaszewski, J., Schenk, P., Spencer, J., and Wagner, R., Callisto, in Jupiter, eds. F. Bagenal, T. Dowling and W. McKinnon, Cambridge University Press, 2004.
43. Dalton, J.B., Infrared Detection of Evidence for Microscopic Organisms on Europa, Eos Trans. AGU,, 83:F7, 2002.
44. Dalton, J.B., Cryogenic Reflectance Spectroscopy in Support of Planetary Missions, pp. 241-244, Proceedings of the 2nd NASA Laboratory Astrophysics Workshop., NASA CP-2002-211863, June 4-6, 2002.
45. Clark, R.N., G.A.S. Swayze, K.E. Livo, R.F. Kokaly, T.V.V. King, J.B. Dalton, J.S. Vance, B.W. Rockwell, T. Hoefen, and R.R. McDougal, Surface Reflectance Calibration of Terrestrial Imaging Spectroscopy Data: a Tutorial using AVIRIS, Proceedings of the 11th JPL Airborne Earth Science Workshop,, JPL Publ. 03-4, pp. 43-63, 2002.
46. Clark, R.N., G.A. Swayze, K.E. Livo, R.F. Kokaly, S.J. Sutley, J.B. Dalton, R.R. McDougal, and C.A. Gent, Imaging Spectroscopy: Earth and Planetary Remote Sensing with the USGS Tetracorder and Expert Systems, J. Geophys. Res. 108, 5131, doi: 10.1029/2002JE001847, 2003.
47. Roush, T.L., and J.B. Dalton,, Reflectance Spectra of Hydrated Titan Tholins at Cryogenic Temperatures and Implications for Compositional Interpretation of Red Objects in the Outer Solar System, Icarus 168, 158-162, 2004.
48. Dalton, J.B., Spectral Behavior of Hydrates: Implications for Europa Mission Spectrometer Design, Proc. 2nd Europa Focus Group Wkshp., NASA Astrobiology Institute, May 14-15, 2002.
49. Dalton, J.B., H. Kagawa, and R. Mogul, Terrestrial Extremophiles under Europan Surface Conditions, Proc. 2nd Astrobiol. Sci. Conf., NASA-Ames Res. Ctr, 2002.
50. Dalton, J.B., Detectability of Potentially Entrained Microorganisms at the Surface of Europa, Lunar Planet. Sci. XXXIII, 1555, 2002.
51. Roush, T.L. and J.B. Dalton, Reflectance Spectra of Titan Tholins at Cryogenic Temperatures, Lunar Planet. Sci. XXXIII, 1525, 2002.
52. Dalton, J.B., Infrared Spectra of Extremophile Bacteria Under Europan Conditions and Their Astrobiological Significance, Bull. Amer. Astr. Soc., 33, 1125, 2001.
53. Roush, T.L. and J.B. Dalton, Low Temperature Reflectance Spectroscopy of Titan Tholins, Bull. Amer. Astr. Soc.,, 33, 1155, 2001.
54. Dalton, J.B., D.L. Bove, C.S. Mladinich, R.N. Clark, B. Rockwell, G.A.S. Swayze, T. King, and S. Church, Spectral Classification of Similar Materials Using the Tetracorder Algorithm: The Calcite-Epidote-Chlorite Problem, pp. 93-103, Proc. 10th Annual JPL Airborne Earth Science Workshop, Feb. 27-Mar. 3, 2001.
55. Dalton, J.B., J.M. Curchin and R.N. Clark, Temperature Dependence of Cryogenic Ammonia-Water Ice Mixtures and Implications for Icy Satellite Surfaces, Lunar Planet. Sci. XXXII, 1496, 2001.
56. Dalton, J.B., T.V.V. King, D.L. Bove, R.F. Kokaly, R.N. Clark, J.S. Vance and G.A. Swayze, Distribution of Acid-Generating and Acid-Buffering Minerals in the Animas River Watershed as Determined by AVIRIS Spectroscopy, pp. 1541-1550, Proceedings of the SME-ICARD 2000 Meeting, Denver, Colorado, May 21-24, 2000. http://www.speclab.cr.usgs.gov/PAPERS/animas1999/animas.html
57. Kargel, J.S., T. MacIntyre, J.B. Dalton and R.N. Clark, Io's sulfur: Surface distribution and chemical nature of impurities, Bull. Am. Astr. Soc., 32, 29.08, 2000.
58. Carlson, R.W., M.S. Anderson, R.E. Johnson, W.D. Smythe, A.R. Hendrix, C.A. Barth, L.A. Soderblom, G.B. Hansen, T.B. McCord, J.B. Dalton, R.N. Clark, J.H. Shirley, A.C. Ocampo, D.L. Matson, Hydrogen Peroxide on the Surface of Europa, Science 283, 2062-2064, 1999.
59. Clark, R.N., Gregg A. Swayze, T.V.V.King, K. Eric Livo, R. F. Kokaly, and J.B. Dalton, Mineralogic Surface Expressions of Hydrothermal Alteration Systems as Mapped with Imaging Spectroscopy: Applications to Mars, Bull. Am. Astron. Soc. 31, 1999.
60. Dalton, J.B. and R.N. Clark, Analysis of the Europan surface composition based on Galileo NIMS spectra, Bull. Am. Astron. Soc. 31, 1171, 1999.
61. Dalton, J.B. and R.N. Clark, Observational constraints on Europa's surface composition from Galileo NIMS data, Lunar Planet. Sci. XXX, 2064, 1999.
62. Dalton, J.B. and R.N. Clark, Laboratory spectra of Europa candidate materials at cryogenic temperatures, Eos Trans. AGU, 79, Fall Meet. Suppl., F541, 1998.
63. Dalton, J.B., and R.N. Clark, Laboratory spectra of Europa candidate materials at cryogenic temperatures, Bull. Am. Astron. Soc.,, 30, 1081, 1998.
64. Dalton, J.B., T.V.V. King, D.J. Bove, R.F. Kokaly, R.N. Clark, J.S. Vance, and G.A. Swayze, Mapping of Acid-Generating and Acid-Buffering Minerals in the Animas Watershed by AVIRIS Spectroscopy, Summaries of the Seventh Annual JPL Airborne Earth Science Workshop, R.O. Green, ed., JPL Publication 98-1, pp. 79-83, 1998.
65. Dalton, J.B. and R.N. Clark, Detection Limits of Martian Clays, Bull. Am. Astron. Soc., 27, 1995.
66. Dalton. J.B., J.B. Pollack, D.H. Grinspoon, R.B. Wattson, D. Crisp, D.A. Allen, Water Abundance in the Deep Venus Atmosphere as Constrained by Near-Infrared Spectroscopic Observations, Bull. Am. Astron. Soc., 25, 1993.
67. Pollack, J.B., J.B. Dalton, D.H. Grinspoon, R.B. Wattson, R. Freedman, D. Crisp, D.A. Allen, B. Bezard, C. DeBergh, L.P. Giver, Q. Ma, and R. Tipping, Near-Infrared Light from Venus' Nightside: A Spectroscopic Analysis, Icarus 103, 1-42, 1993.
68. Showalter, M.R., J.B. Pollack, M.E. Ockert, L.R. Doyle and J.B. Dalton, A Photometric Study of Saturn's F Ring, Icarus 100, 394-411, 1992.
69. Pollack, J.B., J.B. Dalton, D.H. Grinspoon, R.Wattson, R. Freedman, D. Crisp, D. Allen, B. Bezard, C. DeBergh, Simulations of Near Infrared Spectra of Venus' Nightside with High Temperature Databases, Bull. Am. Astron. Soc. 23, 81 1991.
70. Dalton, J.B. and J.B. Pollack, Exploring Mars by Balloon: Results of GCM Simulations, 15 pages, Proceedings of the Case for Mars IV, Boulder, Colorado, June 1990.
71. Pollack, J.B., T.L. Roush, F. Witteborn, J. Bregman, D. Wooden, C. Stoker, O.B. Toon, D. Rank, B. Dalton and R. Freedman, Thermal Emission Spectra of Mars (5.4 - 10.5 μm): Evidence for Sulfates, Carbonates and Hydrates, J. Geophys. Res. 95, 14595-14627, 1990.