Lunar and Planetary Institute






Dr. Essam Heggy
Visiting Scientist, Lunar and Planetary Institute, 3600 Bay Area Boulevard, Houston, TX 77058-1113, Phone: 281-486-2113, Fax: 281-486-2162
heggy@lpi.usra.edu
Research Background
Publications
Experimental Facility


Publications in Peer Reviewed Journals

  1. Mukherjee D., E. Heggy, S. D. Khan, E. C. Sullivan (2008), Geolectrical Constrains on Radar Probing of Shallow Water-Saturated Zones Within Karstified Carbonates in Semi-Arid Environments, submitted to JGR-Surface, 2008JF000997.
  2. Plaut, J. J., G. Picardi, A. Safaeinili, A. B. Ivanov, S. M. Milkovich, A. Cicchetti, W. Kofman, J. Mouginot, W. M. Farrell, R. J. Phillips, S. M. Clifford, A. Frigeri, R. Orosei, C. Federico, I. P. Williams, D. A. Gurnett, E. Nielsen, T. Hagfors,
    E. Heggy, E. R. Stofan, D. Plettemeier, T. R. Watters, C. J. Leuschen, and P. Edenhofer (2007), Subsurface Radar Sounding of the South Polar Layered Deposits of Mars, Science, 316, 92.
  3. Khan S.D., E. Heggy and J. Frenandez, (2007), Mapping Exposed and Buried Lava Flows Using Synthetic Aperture and Ground-Penetrating Radar in Craters of the Moon Lava Field, Geophysics, VOL. 72, NO. 6, p.B161-B174.
  4. Carley R.A and E. Heggy, Finite Difference Time Domain Simulation of Radar Wave Propagation Through Comet Nuclei Models, submitted March 2007 to Meteoritic and Planetary Science.
  5. Farrell W.M., S. M. Clifford, S. M. Milkovich, C. J. Leuschen,  J. J. Plaut, G. Picardi, D. A. Gurnett, T. R. Watters, A. Safaeinili, A. B. Ivanov, R. J. Phillips, E. R. Stofan, E. Heggy, S. A. Cummer and J. Espley, MARSIS Subsurface Radar Investigations of the South Polar Reentrant Chasma Australe, submitted to JGR-Planets.
  6. Heggy E., S. Clifford, T. Farr, C. Dinwiddie, R. Grimm, Radar Investigations of Planetary and Terrestrial Environments, Volume 111, E6, E06S01, DOI: 2006JE002759, June 2006.
  7. Heggy, E. and P. Paillou, Mapping Structural Elements of Small Buried Craters Using Ground-Penetrating Radar in the Southwestern Egyptian Desert:  Implications for Mars Shallow Sounding, Geophys. Res. Letter, L05202, DOI, 10.1029/2005GL024263, March 2006.
  8. Heggy, E., S. Clifford, R. Grimm, C. Dinwiddie, J. Stamatakos, S. Gonzalez Low-frequency radar sounding investigations of the North Amargosa Desert, Nevada: A potential analog of conductive subsurface environments on Mars, Volume 111, E6, E06S03, DOI 2005JE002523, June 2006.
  9. Heggy, E., S. Clifford, C. Dinwiddie, R. Grimm,D. Wyrick, B. Hill, Ground Penetrating Radar Sounding in Mafic Lava Flows: Assessing Attenuation and Scattering Losses in Mars-Analog Volcanic Terrains, Volume 111, E6, E06S04, JGR-Planets, DOI2005JE002589, June 2006.
  10. Grimm, R., E. Heggy, S. Clifford, C. Dinwiddie, R. Mcginnis and D. Farrell, Absorption and Scattering in Ground Penetrating Radar: Analysis of the Bishop Tuff, Volume 111, E6, E06S02, JGR-planets, DOI 2005JE002619, June 2006.
  11. Paillou, P., Y. Lasne, E. Heggy,J.M. Maleziéux, A study of P-band SAR performances for Mars exploration: Imaging subsurface geology and detecting shallow moisture, Volume 111, E6, E06S11, JGR-planets, DOI 2005JE002528, June 2006.
  12. G. Grandjean, Ph. Paillou, N. Bahgdadi, E. Heggy, T. August, Y. Lasne, Surface and Subsurface Structures Mapping Using Low Frequency Radar in Mauritania and Egypt. Journal of African Earth Sciences, Vol. 44, Issue 2, Pages 220–228, February 2006
  13. Picardi, G., J.J. Plaut, D. Biccari, O. Bombaci, D. Calabrese, M. Cartacci, A. Cicchetti, S.M. Clifford, P. Edenhofer, W.M. Farrell, C. Federico, A. Frigeri, D.A. Gurnett, T. Hagfors, E. Heggy, A. Herique, R.L. Huff, A.B. Ivanov, W.T. Johnson, R.L. Jordan, D.L. Kirchner, W. Kofman, C.J. Leuschen, E. Nielsen, R. Orosei, E. Pettinelli, R.J. Phillips, D. Plettemeier, A. Safaeinili, R. Seu, E.R. Stofan, G. Vannaroni, T.R. Watters, E. Zampolini, Radar Soundings of the Subsurface of Mars, Science, Vol. 310, 23 December 2005.
  14. Paillou, P., A. El Barkooky, A. Barakat, J.-M. Malézieux , B. Reynard, J.Dejax, E. Heggy, Discovery of the Largest Crater Field on Earth in the Gilf Kebir Region, Egypt, Geoscience, Vol. 336, pp. 1491–1500, December 2004.
  15. Heggy, E., P. Paillou, F. Costard, N. Mangold, G. Ruffie, F. Demontoux, J. Grandjean , J.-M. Malezieux, Models of the Martian Subsurface for Radar Detection of Shallow Ground Water, JGR-planets, Vol. 108, Issue E4, pp. GDS 11-1, 2003.
  16. Paillou, P., G. Grandjean, N. Baghdadi, E. Heggy, Th. August-Bernex, J. Achache, "Sub-surface Imaging in Central-Southern Egypt Using Low Frequency Radar: Bir Safsaf Revisited", IEEE Transactions on Geoscience and Remote Sensing, vol. 41, no. 7, pp. 1672–1684, 2003.
  17. Paillou, P., A. Rosenqvist, J.M. Malezieux, B. Reynard, T.Farr, E. Heggy, Discovery of a Double Impact Crater in Libya: the Astrobleme of Arkenu, Geoscience, Vol.335, pp 1059–1069, December 2003.
  18. Heggy, E., P. Paillou, G. Ruffie, J.-M. Malezieux, F. Costard, G. Grandjean. On Water Detection in the Martian Subsurface Using Sounding Radar. Icarus, N2, vol. 154, pp 244–257, December 2001.
  19. Paillou, P., Grandjean G., Malezieux J.M., Ruffie G., Heggy E., Piponnier D., Dubois P., Achache J., Performances of Ground Penetrating Radars in Arid Volcanic Regions: Consequences for Mars Subsurface Exploration. Geophys. Res. Letter, Vol.28, 911, 2001.

In preparation for submission:

  1. Heggy E., A. Pommerol, S. Clifford, Global Model of the Dielectric Map of the Martian Surface, In preparation for Icarus, to be submitted for review in December 2007.
  2. Heggy E., S. Clifford, R. Morris, Experimental Approach in Understanding the Dielectric Properties of the Martian-like Surface Sediments, In preparation for JGR–Planets, to be submitted for review in November 2007.
  3. Heggy E., R.A. Carley, E. Asphaug, A. Safaeinelli, Low Frequency Radar Tomography of Asteroids and Comets, to be submitted for review for JGR-Planets in October 2007.

Abstracts in International Conferences and Workshops

(Classified in the alphabetic order of the first author)

  1. Heggy, E.; Clifford, S. M.; Younsi, A.; Miane, J.L.; Carley, R.; Morris, R.V., Experimental and Parametric Investigation of the Dielectric Properties of Martian Surface Sediments and Polar Ice-rich Analog Materials (solicited), EGU General Assembly, Vienna, 2007.
  2. Heggy, E.; Clifford, S. M.; Hughes, S. S.; Ciarletti, V., Mapping Structural Elements in Volcanic Terrain
    Using Multiple Frequencies and Polarimetric Ground Penetrating Radar: Analogy to the Martian Case, EGU General Assembly, Vienna, 2007.
  3. Heggy E.; Clifford S. M.; Younsi A.; Miane J.L.; Carley R.A., and Morris R.V., The Dielectric Properties of the Martian Dust and Ice-Dust Mixtures Analog Materials, 2nd International Workshop - Exploring Mars and its Earth Analogues, ASI-CSA, Tronto, Italy, Juin 2007.
  4. Heggy E.; Khan S.D.; Lognonné P.; Mimoun D., Potential of Synthetic Aperture Radar in Mapping Exposed and buried Lava Flows in Craters of the Moon Lava Field: A Support Study for Proposed Martian SAR Experiments, 2nd International Workshop - Exploring Mars and its Earth Analogues, ASI-CSA, Tronto, Italy, Juin 2007.
  5. Heggy, E., R. Carley, W. Kofman, S. M. Clifford, A. Herique, I. P. Williams, and A. C. Levasseur-Regourd (2006), Dielectric Properties of Dirty-Ice and FDTD Simulation of Radar Propagation Through Comet Nuclei Geoelectrical Models to Support Radar-probing Investigation of the Comet 67P/Churyumov-Gerasimenko, LPI Contributions, 1325, 47-48.
  6. Heggy, E., S. M. Clifford, and D. Card (2006), Understanding Ambiguities in Backscattered Orbital Radar Sounding Data from the Martian Polar Layered Deposits Using Finite Difference Time Domain Simulations, LPI Contributions, 1323, 8107.
  7. Heggy, E., S. M. Clifford, and S. S. Hughes (2006), Polarimetric and three dimensional mapping of shallow subsurface structural elements in mafic pyroclastics using mid- and high-frequency Ground Penetrating Radar (GPR), AGU Fall Meeting Abstracts, 51, 07.
  8. Heggy, E., S. M. Clifford, A. Younsi, J. L. Miane, R. Carley, and R. V. Morris (2006), On the Dielectric Properties of Dust and Ice-Dust Mixtures: Experimental Characterization of the Martian Polar Layered Deposits Analog Materials, LPI Contributions, 1323, 8105.
  9. Heggy, E., E. Asphaug, R. Carley, A. Safaeinili, and K. Righter (2007), Dielectric Properties of Chondrites and Their Implication in Radar Sounding of Asteroid Interiors, paper presented at Lunar and Planetary Institute Conference Abstracts, March 1, 2007.
  10. Heggy, E., S. M. Clifford, A. Younsi, J. L. Miane, R. Carley, and R. V. Morris (2007), On the Dielectric Properties of Dust and Ice-Dust Mixtures: Experimental Characterization of the Martian Polar-layered Deposits Analog Materials, paper presented at Lunar and Planetary Institute Conference Abstracts, March 1, 2007.
  11. Heggy, E. and P. Paillou, Sounding  Cratonic Fill in Small Buried Craters Using ground Penetrating radar: Analog Study to the Martian Case, LPSC 37, Houston, March, 2006.
  12. Heggy, E. R. A. Carley, A. Pommerol, S. M. Clifford, R.V. Morris, density, temperature and Frequency dependent model of the Dielectric Map of the Martian Surface, LPSC 37, Houston, March, 2006.
  13. Heggy, E.; Paillou, P.; Clifford, S.; Potential of Ground Penetrating Radar in Sounding Cratonic Fill in Small Buried Craters: analog study to the Martian case, EGU 06 meeting, paper A-05476, Vienna, Austria, April 2006.
  14. Heggy, E.; Clifford, S, Experimental approach in understanding the dielectric properties of the Martian polar-layered deposits, EGU 06 meeting, paper A-05508, Vienna, Austria, April 2006.
  15. Heggy, E., and S.M. Clifford, Dielectric Properties of Mafic Dust-Ice Mixtures: Case Study of the Martian Polar Layered Deposits, AGU Fall Meeting Abstracts, 31, 0214, 2005.
  16. Heggy, E., S.M. Clifford, R. Grimm, C. Dinwiddie, Water Exploration on the Martian Subsurface Using Low Frequency Sounding Radar: Analog Studies in the North Amargosa Desert and the Craters Of The Moon, Exobio 05, Corsica, Propriano, France, 26 October 2005.
  17. Heggy, E., R. Morris, S. Clifford, Dielectric properties of the Martian-like sediments: Experimental approach from TES observations, Exobio 05, Corsica, Propriano, France, 26 October 2005.
  18. Heggy, E., Loss Tangent Map of the Martian Surface: A Frequency Dependent Model for the Near Equatorial Regions, in 36th Annual Lunar and Planetary Science Conference, pp. 2109, 2005.
  19. Heggy, E., and A. Pommerol, Dielectric Map of the Martian Surface, in Workshop on Radar Investigations of Planetary and Terrestrial Environments, pp. 43, 2005.
  20. Heggy, E., P. Paillou, D. Mills, and S.M. Clifford, Mapping Buried Impacts Craters Using Ground-penetrating Radar: Mapping Some Structural Elements of the Largest Impact Field in the Western Egyptian Desert, in 36th Annual Lunar and Planetary Science Conference, pp. 2375, 2005.
  21. Heggy, E., S. Clifford, R. Grimm, S. Gonzalez, D. Bannon, and D. Wyrick, Mapping Subsurface Stratigraphy and Anamolies in Iron-rich Volcaniclastics Using Ground-penetrating Radar: Potential for Shallow Sounding on Mars, in Workshop on Radar Investigations of Planetary and Terrestrial Environments, pp. 41, 2005.
  22. Heggy, E., S. Clifford, S. Khan, J. Fernandez, E. Wiggs, S.L. Gonzalez, D. Wyrick, R. Grimm, C. Dinwiddie, and A. Pommerol, Mapping Stratigraphy and Anomalies in Iron-Rich Volcaniclastics Using Ground-Penetrating Radar: Potential for Subsurface Exploration on Mars, AGU Fall Meeting Abstracts, 43, 0905, 2004.
  23. Heggy, E., S. Clifford, R. Grimm, and C.L. Dinwiddie, The Potential of Low-Frequency (16-80 MHz) Ground Penetrating Radar to Investigate the Shallow Subsurface in the Arid, Volcanic, and Conductive Soils Near Yucca Mountain: Implications for MARSIS and SHARAD, AGU Spring Meeting Abstracts, 51, 05, 2004.
  24. Heggy, E., S. Clifford, R.V. Morris, and G. Ruffie, Electromagnetic Characterization of Terrestrial Analogues To the Martian Volcanic Sediments in the Frequency Band 1 kHz to 500 MHz: Toward a Dielectric Map of Mars, AGU Spring Meeting Abstracts, 52, 04, 2004.
  25. Heggy, E., S.M. Clifford, R.V. Morris, P. Paillou, and G. Ruffie, On the Dielectric Properties of the Martian-like Surface Sediments, in Lunar and Planetary Institute Conference Abstracts, pp. 1871, 2004.
  26. Heggy, E., F. Horz, A.M. Reid, S.A. Hall, and C. Chan, Potential of Radar Imaging and Sounding Methods in Mapping Heavily Eroded Impact Craters: Mapping Some Structural Elements of the Hico Crater, TX, in Lunar and Planetary Institute Conference Abstracts, pp. 1462, 2004.
  27. Heggy, E., S. Clifford, J. Berthelier, C. Dinwiddie, and P. Paillou, A Comprehensive Approach in Understanding the Martian Geoelectrical and Geomagnetic Context for the Interpretation of Future Radar Sounding Data, AGU Fall Meeting Abstracts, 31, 1060, 2003.
  28. Heggy, E., P. Paillou, F. Costard, N. Mangold, S. Clifford, and J.J. Berthelier, On the Determination of Local Sites for Shallow Ground Water Prospection Using Low Frequency Sounding Radars on Mars, in Sixth International Conference on Mars, pp. 3012, 2003.
  29. Heggy, E., Ph. Paillou, G. Grandjean, Laboratory Characterisation and Radio-Echo Simulations to Evaluate Potential Sounding Sites for Water Identification on Mars, European Geophysical Society, Nice, France, April 2002.
  30. Heggy, E., P. Paillou, F. Costard, N. Mangold, and G. Ruffie, Laboratory Characterisation and Radio-echo Simulations To Evaluate Potential Sounding Sites For Water Identification On Mars, EGS XXVII General Assembly, Nice, 21-26 April 2002, abstract #1011, 27, 1011, 2002.
  31. Heggy, E., P. Paillou, F. Costard, N. Mangold, G. Ruffie, and F. Demantoux, Geoelectrical Models and Radar Echo Simulation for Sounding the Martian Subsurface, in Lunar and Planetary Institute Conference Abstracts, pp. 1740, 2002.
  32. Heggy, E., Ph. Paillou, G. Ruffie , F. Demantoux , F. Costard, "Etude de Performance des Sondeurs Radar: Detection de L'eau Dans la Subsurface de Mars", Journee Caracterisation Matiere Microondes JCMM, Toulouse, Mars 2002.
  33. Heggy, E., Ph. Paillou, G. Ruffie, F. Demontoux, G.Grandjean, Water Detection in the Martian Subsurface, GPR 02 proceedings, Santa Barbara, USA, April 2002.
  34. Heggy, E., Ph. Paillou, F. Costard, N. Mangold, F. Demontoux, G. Ruffie, J.M. Malezieux, Geoelectrical Models for Optimal Sounding Radar Performance on Mars, Exobio02 Conf., Colle sur loup, France, September 2001.
  35. Heggy, E., G. Ruffie, Ph. Paillou, Etude des Performances des Radars Sondeurs pour la Détection de l'eau dans la Sub-surface de Mars", 12èmes Journees Nationales Micro-ondes, Poitiers, France, mai 2001.
  36. Heggy, E., P. Paillou, G. Ruffié, J.M. Malézieux, F. Costard, and G. Grandjean, On Sounding Radar Performances for Martian Subsurface Water Detection, in Conference on the Geophysical Detection of Subsurface Water on Mars, pp. 7011, 2001.
  37. Heggy, E., Ph. Paillou, G. Ruffie, J.M. Malezieux, G. Grandjean, F. Costard, Dielectric Measurements of Volcanic Materials Applied to Subsurface Sounding of Mars", EGS'00, Nice, France, April 2000.

    Heggy, E., G. Ruffie, Ph. Paillou, J.P. Parneix, Caractérisation Electromagnétique d'Analogues de sols Martiens pour l'Interprétation des données Radar NETLANDER et MARS EXPRESS, 6èmes Journées de Caractérisation Micro-ondes et Matériaux- JCMM2000, Paris, France, Mars 2000.
  38. Herique A., Heggy E., Clifford S.M., Roux A., Kofman W., Dechambre M., Ciarletti V., GPR study of Martian analogue terrains: goal, results and perspectives, 2nd International Workshop - Exploring Mars and its Earth Analogues, ASI-CSA, Tronto, Italy, Juin 2007.
  39. Clifford S., Heggy E., Ciarletti V., Le Gall A., Kofman W. and A. Herique, A Collaborative Study of the Use of Multi-Frequency GPR and Other Field and Laboratory Investigations of Mars Analog Environments, 2nd International Workshop - Exploring Mars and its Earth Analogues, ASI-CSA, Tronto, Italy, Juin 2007.
  40. Khan, S.D.; Heggy, E.; Fernandez, J., Mapping Buried Lava Flows using Synthetic Aperture and Ground Penetrating Radars in Craters of the Moon Lava Field, Idaho, USA, EGU General Assembly, Vienna, 2007.
  41. Banerjee, D.; Heggy, E.; Khan, S.D., Dielectric and GPR Studies of Edwards Formation Carbonates in Central Texas, EGU General Assembly, Vienna, 2007
  42. Clifford, S.; Heggy E.; LeGall, A.; Ciarletti, V., The Effect of Vadose Zone Thickness and Moisture
    Content on the Detectability of Subpermafrost Groundwater by Low-Frequency Radar Sounding on Mars, EGU General Assembly, Vienna, 2007.
  43. Banerjee, D; Heggy E.; Khan S.D., Sullivan, C E; Dielectric and GPR Characterization of Shallow Carbonate Reservoir Analogs in Central Texas, AGU Joint Assembly, Acapulco, Mexico, 2007.
  44. Hughes, S. S., E. Heggy, and S. M. Clifford (2007), Mapping Shallow Subsurface Structural Elements in Mafic Pyroclastics Using Polarimetric and Multiple Frequencies Ground Penetrating Radar: Implications for Mars Subsurface Mapping, paper presented at Lunar and Planetary Institute Conference Abstracts, March 1, 2007.
  45. Schibler, P., E. Heggy, and P. Lognonné (2007), Mars Environmental and Soil Simulating Facility for Geophysical and Exobiological Studies, paper presented at Lunar and Planetary Institute Conference Abstracts, March 1, 2007.
  46. Clifford, S. M., E. Heggy, and V. Ciarletti (2006), Geophysical Investigations of Mars Analog Environments for Comparative Planetology and Spacecraft Instrument Prototype Testing, AGU Fall Meeting Abstracts, 51, 01.
  47. Carley, R.A. and E. Heggy, Characterization of the density dependent dielectric properties of Mars-like soils: Implications for MARS radar studies, LPSC 37, Houston, March 2006.
  48. Clifford, S., E. Heggy, and S. Arcone, Subsurface Radar Investigations of Terrestrial Martian Analogues: Introduction to the Session, AGU Spring Meeting Abstracts, 51, 01, 2004.
  49. Clifford, S., E. Heggy, M. Ali, V. Ciarletti, C. Corbel, F. Dolon, A. Le Gall, R. Grimm, R. Ney, S. Sandberg; Multi-frequency GPR and other electromagnetic investigations of two Mars analog environments in the West Egyptian Desert, EGU 06 meeting, paper A-05508, Vienna, Austria, April 2006
  50. Fernandez, J., E. Heggy, and S. Khan, Numerical Methods in Understanding the Performances of Radar Sounding Techniques: Multiple low Frequency Approach for Unambiguous Identification of Subsurface Water Saturated Interfaces on Mars, AGU Fall Meeting Abstracts, 13, 0985, 2004.
  51. Grimm, R., E. Heggy, S. Clifford, and C. Dinwiddie, Scattering Limits to Depth of Radar Investigation: Lessons from the Bishop Tuff, in Workshop on Radar Investigations of Planetary and Terrestrial Environments, pp. 37, 2005.
  52. Paillou, P., E. Heggy, F. Costard, N. Mangold, G. Ruffié, F. Demantoux, J.-M. Malézieux, J.-J. Berthelier; Modélisation du sous sol Martien pour la Simulation et l'Interprétation des données Radar de la Mission NetLander, PNP, Nantes, 2002.
  53. Jernsletten, J.A., and E. Heggy, Comparing Transient Electromagnetics and Low Frequency Ground Penetrating Radar for Sounding of Subsurface Water in Mars Analog Environments, in Workshop on Radar Investigations of Planetary and Terrestrial Environments, pp. 47, 2005.
  54. Jernsletten, J.A., and E. Heggy, Sounding of Groundwater Through Conductive Media in Mars Analog Environments Using Transient Electromagnetics and Low Frequency GPR, AGU Spring Meeting Abstracts, 53, 01, 2004.
  55. Jernsletten, J.A., and E. Heggy, Sounding of Subsurface Water Through Conductive Media in Mars Analog Environments Using Transient Electromagnetics and Low Frequency Ground-penetrating Radar, in Lunar and Planetary Institute Conference Abstracts, pp. 2089, 2004.
  56. Paillou, P., E. Heggy, G. Ruffie, J.-M. Malezieux, F. Costard, G. Grandjean, "Electromagnetic Characterization of Martian Analogues: Application to the Estimation of Sounding Radar Performances", 2nd NetLander Scientific Symposium, Nantes, France, April 2001.
  57. Le Gall, A., S. M. Clifford, E. Heggy, V. Ciarletti, and D. Mukherjee (2007), Electromagnetic Investigations of a Deep Water Table in the West Egyptian Desert: Lithologic and Geothermal Vapor Effects on Crustal Resistivity and GPR Performance, with Potential Implications for Mars, paper presented at Lunar and Planetary Institute Conference Abstracts, March 1, 2007.
  58. Grimm, R. E., D. E. Stillman, E. Heggy, C. L. Dinwiddie, and R. N. McGinnis (2006), Moderately to Poorly Welded Tuff, Bishop, California: Broadband Performance of Ground- Penetrating Radar, AGU Fall Meeting Abstracts, 51, 06.
  59. Grandjean, G., Ph. Paillou, E. Heggy, F. Costard, A Fast and Efficient Numerical Method to Model GPR Performances in the Framework of the NetLander Project, 2nd NetLander Scientific Symposium, Nantes, France, April 2001.
  60. Necsoiu, M., C.L. Dinwiddie, E. Heggy, and T.G. Farr, A Web-based Collaborative Tool for Mars Analog Data Exploration, in Workshop on Radar Investigations of Planetary and Terrestrial Environments, pp. 58, 2005.
  61. Paillou, P., T.G. Farr, E. Heggy, and A. Rosenqvist, Eastern Sahara Geology from Orbital Radar: Potential Analog to Mars, in Lunar and Planetary Institute Conference Abstracts, pp. 1210, 2004.
  62. Paillou, P., G. Grandjean, E. Heggy, and T. Farr, Exploring Subsurface Geology Using Radar Techniques: Experiments in Sahara and Consequences for Mars Exploration, AGU Spring Meeting Abstracts, 52, 01, 2004
  63. Paillou, P., G. Grandjean, E. Heggy, J.M. Malézieux, and J. Achache, On Performances of Ground Penetrating Radars for Mars Subsurface Exploration, in The Fifth International Conference on Mars, July 19-24, 1999, Pasadena, California, abstract no. 6061, pp. 6061, 1999.
  64. Paillou, P., Th. August-Bernex, E. Heggy, Ph. Dreuillet, D. Le Coz, O. Duplessis, C. Coulombeix, P. Borderies, J.-M. Boutry, G. Grandjean, N. Baghdadi, H. Dupuis, V. Lafon, R. Garello, J.-M. Le Caillec, I. Champion, M. Dechambre, R. Chapoulie, M. Martinaud, G. Ruffie, A. Podaire, J. Achache, "The Pyla 2001 experiment: Flying the new RAMSES P-band SAR facility", CORISTA-EARS Remote Sensing by Low-Frequency Radars, Naples, Italy, September 2001.
  65. Costard, F., J.J. Berthelier, G. Grandjean, E. Heggy, N. Mangold, R. Ney, and P. Paillou, Proposed Model of the Martian Subsurface for the GPR Experiment on NETLANDER, in Conference on the Geophysical Detection of Subsurface Water on Mars, pp. 7030, 2001.
  66. Dinwiddie, C.L., S.M. Clifford, R.E. Grimm, and E. Heggy, Strategy for Selection of Mars Geophysical Analogue Sites, in Workshop on Radar Investigations of Planetary and Terrestrial Environments, pp. 29, 2005.
  67. McGinnis, R. N., C. L. Dinwiddie, D. E. Stillman, E. Heggy, and R. E. Grimm (2006), Pyroclastic and Volcaniclastic Deposits Near Bishop, California: Geologic Controls on Near-Surface Electrical Resistivity and Radar Data, AGU Fall Meeting Abstracts, 31, 0132.
  68. Gonzalez, S.H., C.L. Dinwiddie, R.E. Grimm, E. Heggy, D.Y. Wyrick, D.A. Ferrill, and S.M. Clifford, Electrical Conductivity of the Bishop Tuff, Bishop, CA: Implications for Ground-Penetrating Radar Performance, AGU Fall Meeting Abstracts, 11, 0826, 2004.
  69. Grandjean, G., P. Paillou, N. Baghdadi, E. Heggy, and T. August-Bernex, Subsurface Imaging with Low Frequency SAR: Field Validation in Egypt using a Ground-penetrating Radar, in ESA SP-475: Retrieval of Bio- and Geo-Physical Parameters from SAR Data for Land Applications, pp. 351-354, 2002.
  70. Grandjean, G., P. Paillou, N. Baghdadi, E. Heggy, Th. August, J. Achache, Subsurface Imaging with Low Frequency SAR: Field Validation in France and Egypt using a Ground Penetrating Radar, GPR 02, Santa-Barbara, California, USA, April 2002.
  71. Grandjean, G., P. Paillou, N. Baghdadi, E. Heggy, Th. August-Bernex, Sub-surface Imaging with Low Frequency SAR. Field validation in Egypt using a Ground-penetrating Radar, 3rd Int. Symp. on Retrieval of Bio- and Geophysical Parameters from SAR Data for Land Applications, Sheffield, UK, September 2001.
  72. Grandjean, G., P. Paillou, N. Baghdadi, E. Heggy, Th. August, Detection de Structures Enfouies par Radar (SAR) Grande Longueur d'onde. Exemple de Validation en Egypte à l'aide du Radar Geologique, Geofcan01, Orleans, France, Septembre 2001.
  73. Dinwiddie, C. L., R. E. Grimm, R. N. McGinnis, D. E. Stillman, and E. Heggy (2006), Moderately to Poorly Welded Tuff, Bishop, California: Geophysical and Geological Characterization to Determine the Source of Radar Scattering, AGU Fall Meeting Abstracts, 51, 05.
  74. Plaut, J. J., G. Picardi, A. Cicchetti, S. Clifford, P. Edenhofer, W. Farrell, C. Federico, A. Frigeri, E. Heggy, A. Herique, A. Ivanov, R. Jordan, W. Kofman, C. Leuschen, S. Milkovich, J. Mouginot, E. Nielsen, R. Orosei, and E. Pettinelli (2006), MARSIS Subsurface Sounding Observations of the South Polar Region of Mars, LPI Contributions, 1323, 8100.
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December 31, 2008