Chapter 2: Energy at the Lunar Surface - Lunar and Planetary Institute

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MASS-FREQUENCY DISTRIBUTION Fig. 2.6. Cumulative flux (mm2sec-I12 fl sterad) of meteoroids and related objects into Earth's atmosphere having a mass of Mp(g) or greater (after Dohnanyi, 1972). I
MASS-FREQUENCY DISTRIBUTION experiments meet all of the requirements (Fig. 2.7). For larger particles with masses between 10-6 and lg Gault et al. (1972) found that recent analyses of photographic meteor data (Naumann, 1966, Lindblad, 1967; Erickson, 1968; Dalton, 1969; Dohnanyi, 1970, 1972) agree closely with the earlier NASA model (Cour-Palais, 1969). After modification for the lunar environment the NASA model was adopted. For masses greater than 1 g Hawkins (1963) earlier model was adopted. The Hawkins model is in disagreement with the model based on long-period seismic data (Latham et al., 197 1). However, as pointed out previously, there appear to be serious calibration problems associated with the seismic model. Fig. 2.7. The micrometeoroid flux measurements from spacecraft experiments which were selected to define the mass-flux distribution. Also shown is the incremental mass flux contained within each decade of mp (after Gault et al., 1972, Proc. 3rd Lunar Sci. Conf., Suppl. 3, Vol. 3, MITIPergamon).
Page 1 and 2: CHAPTER 2 Energy at the Lunar Surfa
Page 3 and 4: DISTRIBUTION OF METEOROIDS Heliocen
Page 5 and 6: MEASURING THE METEOROID FLUX Measur
Page 7 and 8: MEASURING THE METEOROID FLUX suffic
Page 9: MASS-FREQUENCY DISTRIBUTION observa
Page 13 and 14: PHYSICAL PROPERTIES Escape Velociti
Page 15 and 16: PHYSICAL PROPERTIES he ratio a/b is
Page 17 and 18: PHYSICAL PROPERTIES r Meteorites I
Page 19 and 20: PHYSICAL PROPERTIES 37 requires pro
Page 21 and 22: HISTORY OF METEOROID FLUX History o
Page 23 and 24: METEOROID ENERGY Solar Flare Track
Page 25 and 26: SOLAR ENERGY 43 radiant energy flux
Page 27 and 28: GRAVITATIONAL ENERGY Fig. 2.16. Enl
Page 29 and 30: GRAVITATIONAL ENERGY Fig. 2.19. Bou
Page 31 and 32: GRAVITATIONAL ENERGY similarly the
Page 33 and 34: GRAVITATIONAL ENERGY Fig. 2.24. Soi
Page 35 and 36: GRAVITATIONAL ENERGY of seismic eve
Page 37 and 38: INTERNAL ENERGY 55 rate proportiona
Page 39 and 40: OTHER ENERGY SOURCES Fig. 2.28. A g
Page 41 and 42: CONCLUDING REMARKS \ Apollo Orbit I
Page 43 and 44: REFERENCES N. H and Ferry, G. W., 1
Page 45 and 46: REFERENCES Mc~onnell, J. A. M., Fla

Chapter 2: Energy at the Lunar Surface - Lunar and Planetary Institute

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