Physics – Geophysics
Scientific paper
May 1987
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1987pggp.rept..392h&link_type=abstract
In NASA, Washington, Reports of Planetary Geology and Geophysics Program, 1986 p 392-393 (SEE N87-23341 16-91)
Physics
Geophysics
1
Geochronology, Impact, Momentum Transfer, Projectile Cratering, Scaling Laws, Chemical Composition, Mass Distribution, Porous Materials, Velocity
Scientific paper
Impact craters are numerous on planetary bodies and furnish important information about the composition and past histories of those bodies. The interpretation of that information requires knowledge about the fundamental aspects of impact cratering mechanics. Since the typical conditions of impacts are at a size scale and velocity far in excess of experimental capabilities, direct simulations are precluded. Therefore, one must rely on extrapolation from experiments of relatively slow impacts of very small bodies, using physically based scaling laws, or must study the actual cases of interest using numerical code solutions of the fundamental physical laws that govern these processes. A progress report is presented on research on impact cratering scaling laws, on numerical studies that were designed to investigate those laws, and on various applications of the scaling laws developed by the author and his colleagues. These applications are briefly reviewed.
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