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Impact Cratering: Bridging the Gap Between Modeling and Observations IMPA_ CRATERING: BRIDGING THE GAP B_EEN MODELING AND OBSERVATIONS IIllll ..................... ,, ,, ,,, ,,,,,,,, ,r, II I I II I Houston, T<xas -- F_bruary 7-9, 2003 Abstract Volume LPI LPI Contribution No. 1155 Impact Cratering: Bridging the Gap Between Modeling and Observations February 7-9, 2003 Houston, Texas Sponsor Lunar and Planetary Institute National Aeronautics and Space Administration Conveners Robert Herrick, Lunar and Planetary Institute Elisabetta Pierrazzo, Planetary Science Institute Scientific Organizing Committee Bevan French, Natural History Museum Kevin Housen, Boeing Corporation William McKinnon, Washington University Jay Melosh, University of Arizona Michael Zolensky, NASA Johnson Space Center Lunar and Planetary Institute 3600 Bay Area Boulevard Houston TX 77058-1113 LPI Contribution No. 1155 Compiled in 2003 by LUNAR AND PLANETARY INSTITUTE The Institute is operated by the Universities Space Research Association under Agreement No. NCC5-679 issued through the Solar System Exploration Division of the National Aeronautics and Space Administration. Any opinions, findings, and conclusions or recommendations expressed in this volume are those of the author(s) and do not necessarily reflect the views of the National Aeronautics and Space Administration. 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. Abstracts in this volume may be cited as Author A. B. (2003) Title of abstract. In Impact Cratering: Bridging the Gap Between Modeling and Observations, p. XX. LPI Contribution No. 1155, Lunar and Planetary Institute, Houston. This volume is distributed by ORDER DEPARTMENT Lunar and Planetary Institute 3600 Bay Area Boulevard Houston TX 77058-1113, USA Phone: 281-486-2172 Fax: 281-486-2186 E-mail: [email protected] Mail order requestors will be invoiced for the cost of shipping and handling. ISSN No. 0161-5297 Preface This volume contains abstracts that have been accepted for presentation at the workshop on Impact Cratering: Bridging the Gap Between Modeling and Observations, February 7-9, 2003, in Houston, Texas. Logistics, onsite administration, and publications for this workshop were provided by the staff of the Publications and Program Services Department at the Lunar and Planetary Institute. LPI Contribution No. 1155 v Contents Program ................................................................................................................................. 1 Abstracts Calculation of Planetary Impact Cratering to Late Times T. J. Ahrens, J. D. O'Keefe, and S. T. Stewart ............................................................ 7 Dynamic Tensile Strength of Crustal Rocks and Applications to Impact Cratering H. Ai and T. J. Ahrens ................................................................................................. 8 The Evolution of Oblique Impact Flow Fields Using Maxwell's Z Model J. L. B. Anderson, P. H. Schultz, and J. T. Heineck .................................................... 9 Oblique Impact and Its Ejecta -- Numerical Modeling N. A. Artemieva and E. Pierazzo ................................................................................ 10 Formation of Impact Craters on Comets and Asteroids: How Little is Known E. Asphaug ................................................................................................................... 12 Small Impact Craters in Argentine Loess: A Step up from Modeling Experiments W. A. Cassidy and S. P. Wright ................................................................................... 14 Cratering on Small Bodies: Lessons from Eros C. R. Chapman ............................................................................................................ 15 Modeling Complex Crater Collapse G. S. Collins and E. P. Turtle ...................................................................................... 16 Numerical Simulations of Silverpit Crater Collapse: A Comparison of Tekton and SALES 2 G. S. Collins, E. P. Turtle, and H. J. Melosh ............................................................... 18 Application of Adaptive Mesh Refinement to the Simulation of Impacts in Complex Geometries and Heterogeneous Materials D. A. Crawford and O. S. Barnouin-Jha ..................................................................... 19 WIRGO in TIC's? [What (on Earth) is Really Going on in Terrestrial Impact Craters?] M. R. Dence ................................................................................................................. 20 Experimental Modeling of Impact-Induced High-Temperature Processing of Silicates M. V. Gerasimov, Yu. P. Dikov, and O. L Yakovlev .................................................... 21 Thermal and Dynamic Consequences of Impact -- Lessons from Large Impact Structures R. L. Gibson and W. U. Reimold ................................................................................. 22 vi hnpact Cratering Two- and Three-Dimensional Simulations of Asteroid Ocean Impacts G. Gisler, R. P. Weaver, C. L. Mader, and M. L. Gittings .......................................... 24 Observations of the Terrestrial Impact Cratering Record R. A. F. Grieve ............................................................................................................. 25 Antipodal Hotspots on Earth: Are Major Deep-Ocean Impacts the Cause? J. 7". Hagstrum ............................................................................................................. 27 Magnetic Fields of Lunar Impact Basins and Their Use in Constraining the Impact Process J. S. Halekas and R. P. Lin .......................................................................................... 28 Pyroclastic Flows and Surges: Possible Analogy for Crater Ejecta Deposition H. Hargitai and A. Kereszturi ..................................................................................... 29 Thicknesses of and Primary Ejecta Fractions in Basin Ejecta Deposits L. A. Haskin and W. B. McKinnon ............................................................................... 30 Constraints on the Impact Process from Observations of Oblique Impacts on the Terrestrial Planets R. R. Herrick and K. Hessen ........................................................................................ 31 Linking Experimental Modelling of Impact Craters to Structural Components of the Real Thing A. R. Hildebrand .......................................................................................................... 32 Does Melt Volume Give the Signature of the Impactor? K. A. Holsapple ............................................................................................................ 33 What Do We Need to Know to Model Impact Processes? K. A. Holsapple ............................................................................................................ 34 Effects of Target Properties on the Cratering Process K. R. Housen ................................................................................................................ 36 Complex Crater Formation: Verification of Numerical Models B. A. lvanov ................................................................................................................. 38 Educational Experience in Numerical Modeling of Impact Cratering B. A. Ivanov ................................................................................................................. 39 Modification of ANEOS for Rocks in Compression B. A. lvanov ................................................................................................................. 40 LPI Contribution No. 1155 vii Cooling of the Kfirdla Impact Crater: II. Impact and Geothermal Modelling A. J6eleht, K. Kirsimde, E. Versh, J. Plado, and B. lvanov ........................................ 41 Seismic Investigation and Numerical Modeling of the Lake Bosumtwi Impact Crater T. Karp, N. A. Artemieva, and B. Milkereit ................................................................. 42 Early Fracturing and Impact Residue Emplacement: Can Modeling Help to Predict Their Location in Major Craters? A. T. Kearsley, G. A. Graham, J. A. M. McDonnell, P. A. Bland, R. M. Hough, and P. A. Helps ............................................................................................................ 43 Crater Basin Rebound Above Plastic Layers: Model Based on Europa A. Kereszturi ................................................................................................................ 44 Using Geochemical Observations to Constrain Projectile Types in Impact Cratering C. Koeberl .................................................................................................................... 45 Amelia Creek, Northern Territory: A 20 x 12 Km Oblique Impact Structure with No Central Uplift F. A. Macdonald and K. Mitchell ................................................................................ 47 Goldilocks and the Three Complex Crater Scaling Laws W. B. McKinnon, P. M. Schenk, and J. M. Moore ....................................................... 48 Modeling Meteorite Impacts: What we Know and What we Would Like to Know H. J. Melosh ................................................................................................................. 49 Limits to the Presence of Impact-induced Hydrothermal Alteration
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