NASA-C R- 1962 79 ///P-q/- c/r_.. MARS: PAST, PRESENT, AND . ?UTURE RESULTS FROM THE MSATT PROGRAM MSATT Mars Surface and Atmosphere Through Time (NASA-CR-194279) MARS: PAST, N94-33190 PRESENT, AND FUTURE. RESULTS FROM --THRU-- THE MSATT PROGRAM, PART I Abstracts N9#-33240 Only (Lunar and Planetary Inst.) Unclas 66 p G3/gZ 0008630 LPI Technical Report Number 93-06, Part 1 Lunar and Planetary Institute 3600 Bay Area Boulevard Houston TX 77058-1113 LPI/TR--93-06, Part 1 -v 2 _r r_._- MARS: PAST, PRESENT, AND FUTURE-- RESULTS FROM THE MSATT PROGRAM Edited by R. M. Haberle Convened by The MSATI" Steering Committee Held at Houston, Texas November 15-17, 1993 Sponsored by Mars Surface and Atmosphere Through Time (MSATT) Study Group Lunar and Planetary Institute Lunar and Planetary Institute 3600 Bay Area Boulevard Houston TX 77058- I 113 LPI Technical Report Number 93-06, Part 1 LPI/TR--93-06, Part 1 Compiled in 1993 by LUNAR AND PLANETARY INSTITUTE The Institute is operated by the University Space Research Association under Contract No. NASW-4574 with the National Aeronautics and Space Adminislration. Material in this volume may be copied without restraint for library, abstract service, education, or personal research purposes; however, republication of any paper or portion thereof requires the written permission of the authors as well as the appropriate acknowledgment of this publication. This report may be cited as Haberle R. M., ed. (1993) Mars: Past Present, and Future--Results from the MSATT Program. LPI Tech. Rpt. 93-06, Part I, Lunar and Planetary Institute, Houston. 58 pp- This report is distributed by ORDER DEPARTMENT Lunar and Planetary Institute 3600 Bay Area Boulevard Houston TX 77058-1113 Mail order requestors will be invoiced for the cost of shipping and handling. LPI Technical Report 93-06, Part 1 iii Preface This volume contains papers that have been accepted for presentation at the workshop on Mars: Past, Present, and Future--Results from the MSATT Program, November 15-17, 1993, in Houston, Texas. The Program Commit- tee consisted of J. Bell (NASA Ames Research Center), R. Haberle (NASA Ames Research Center), S. Lee (University of Colorado), B. Schuraytz (Lunar and Planetary Institute), and K. Tanaka (U.S. Geological Survey, Flagstaff). Logistics and administrative and publications support were provided by the Publications and Program Services Department staff at the Lunar and Planetary Institute. 71D LPl Technical Report 93-06, Part I v PAGE BLANK NOT FILMEO Contents Depth-Diameter Ratios for Martian Impact Craters: Implications for Target Properties and Episodes of Degradation N. G. Barlow _I°°_e._°_._.._f_°4°H_*_'_.._.'_..._I4°_._°_4_4*_ .... '''''°°''*'H''°°°''''°°'OOQOOHI,HI_,°4_°,,, ] _ / Stationary Eddies in the Mars General Circulation as Simulated by the NASA-Ames GCM J. R. Barnes, J. B. Pollack, and R. M. Haberle .................................................................................. 2 -2. Thermal Emission Measurements (5-25 I.an) of Hawaiian Palagonitic Soils with Implications for Mars J. F. Bell III and T. L. Roush .............................................................................................................. 2 -3 Thermal Studies of Martian Channels and Valleys Using Termoskan Data: New Results B. H. Betts and B. C. Murray ............................................................................................................. 3 ?' The Importance of Environmental Conditions in Reflectance Spectroscopy of Laboratory Analogs for Mars Surface Materials J. Bishop, S. Murchie, S. Pratt, J. Mustard, and C. Pieters ............................................................... 4 - Ferric Sulfate Montmorillonites as Mars Soil Analogs J. L. Bishop, C. M. Pieters, and R. G. Burns ................................................................. i" ................. 6 Constraints on the Martian Cratering Rate Imposed by the SNC Meteorites and Vallis Marineris Layered Deposits J. Brandenburg ................................................................................................................................... 8 7 Deposition Rates of Oxidized Iron on Mars R. G. Burns ....................................................................................................................................... I0 _; MARSNET: A European Network of Stations on the Surface of Mars A. F. Chicarro .................................................................................................................................... I2-_cr- ? Mars Atmospheric Dust Properties: A Synthesis of Mariner 9, Viking, and Phobos Observations R. 7". Clancy, S. W. Lee, and G. R. Gladstone .................................................................................. 14 -34"- Magmatic Volatiles and the Weathering of Mars B. C. Clark ........................................................................................................................................ 15-8-e: // Thermal and Hydraulic Considerations Regarding the Fate of Water Discharged by ! the Outflow Channels to the Martian Northern Plains S. M. Clifford .................................................................................................................................... 16-/_:3_ vi Results from the MSATT Program T Regional Sedimentological Variations Among Dark Crater Floor Features: Toward Eolian Sand Distribution on Mars a ModelK. S. Edgettfor Modernand P. R. Christensen ................................................................................................ _7 Aerosols Scattering and Near-infrared Observations of the Martian Surface P.._ S. Erard ......................................................................................................................................... _18 A Model for the Evolution of CO 2 on Mars 19 R. M. Haberle, D. Tyler, C. P. McKay, and W. L. Davis ............................................................. Possible Test of Ancient Dense Martian Atmosphere W. K. Hartmann and S. Engel .................................................................................................... _q. 20 t Groundbased Monitoring of Martian Atmospheric Opacity 20 K. E. Herkenhoff and L. J. Martin ..... ,.............................. ...-'.-." ................................................. "_:_ Mars Atmospheric Loss and Isotopic Fractionation by Solar-Wind-Induced Sputtering ! c and Photochemical Escape 21 B. M. Jakosky, R. O. Pepin, R. E. Johnson, and J. L. Fox ................................... i...................... "/_ SNC Meteorites and Their Implications for Reservoirs of Martian Volatiles i _, °,...,,.,. ...... 21 J. H. Jones ........................................................................................................................ ,_ # The Northern Plains MSATr Meeting, and a Call for a Field-oriented Successor to MSATI" 23 J. S. Kargel ................................................................................... ' ....... ' ..................................... ;._)'" Temporal and Spatial Mapping of Atmospheric Dust Opacity and Surface Albedo _.7) on Mars 24 S. W. Lee, R. T. Clancy, G. R. Gladstone, and T. Z Martin ...................................................... _" How Well was Total Ozone Abundance Inferred with Mariner 9? _-i B. L Lindner ............................................................................................................................... .._. 25 The Effect of Polar Caps on Obliquity _-_"_ 26 B. L Lindner ............................................................................................................................. Escape of Mars Atmospheric Carbon Through Time by Photochemical Means J_'-_ 27 J. G. Luhmann, J. Kim, and A. F. Nagy ............................................................................ "'"_" Might It Be Possible to Predict the Onset of Major Martian Dust Storms? _" 27 L. J. Martin, P. B. James, and R. W. Zurek ................................................................................ _!_'" Studies of Atmospheric Dust from Viking IR Thermal Mapper Data _--': ................... 28 T. Z. Martin .................................................................................................................... LPI Technical Report 93-06, Part I vii Global Color Views of Mars A. S. McEwen, L. A. Soderblom, T. L. Becker, E. M. Lee, and R. M. Batson ................................... 29 2_ The Distribution of Martian Ground Ice at Other Epochs M. T. Mellon and B. M. Jakosky ...................................................................................................... 29,2._ Mineralogical Diversity (Spectral Reflectance and Mrssbauer Data) in Compositionally Similar Impact Melt Rocks from Manicouagan Crater, Canada R. V. Morris, J. F. Bell III, D. C. Golden, and H. V. Lauer Jr. ................................................... ".. 303, 0 Martian Spectral Units Derived from ISM Imaging Spectrometer Data S. Murchie, J. Mustard, and R. Saylor ............................................................................................. 323/ Eddy Transport of Water Vapor in the Martian Atmosphere J. R. Mmphy and R. M. Haberle ...................................................................................................... 34s_, IRTM Brightness Temperature Maps of the Martian South Polar Region During the Polar Night: The Cold Spots Don't Move D. A. Paige, D. Crisp, M. L. Santee, and M. L Richardson ............................................................. 34 a'3 Numerical