Statistics – Computation
Scientific paper
Apr 1982
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1982p%26ss...30..395c&link_type=abstract
Planetary and Space Science, vol. 30, Apr. 1982, p. 395-398.
Statistics
Computation
10
Geomagnetism, Hypervelocity Impact, Impact Damage, Planetary Magnetic Fields, Plasma Clouds, Basalt, Cratering, Plasma Density, Plasma Temperature
Scientific paper
It is proposed that the strong temperature and density gradients at the boundary of an impact-produced plasma cloud may be a source of local magnetic field amplification. The plasma produced by the 10 km/sec impact of an aluminum projectile on basalt yields a magnetic field through thermally-driven electrical currents which can account for the magnetic profile exhibited by impacted samples. Although the computations presented refer to a particular, experimental situation, the mechanism proposed may be more generally applicable to planetary cratering and account for the magnetization observed in the vicinity of lunar craters. Such studies as Martelli and Newton (1977) confirm the magnetic field enhancement near the crater edges.
Cerroni Pricilla
Martelli Gianpasquale
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