Lunar electrical conductivity and magnetic permeabilityImproved analytical techniques are applied to a large Apollo magnetometer data set to yield values of electroconductivity, temperature, magnetic permeability, and iron abundance. Average bulk electroconductivity of the moon is calculated to be .0007 mho/m; a rapid increase with depth to about .003 mho/m within 250 km is indicated. The temperature profile, obtained from the electroconductivity profile for olivine, indicates high lunar temperatures at relatively shallow depths. Magnetic permeability of the moon relative to its environment is calculated to be 1.008 plus or minus .005; a permeability relative to free space of 1.012 plus 0.011, minus 0.008 is obtained. Lunar iron abundances corresponding to this permeability value are 2.5 plus 2.3, minus 1.7 wt% free iron and 5.0-13.5 wt% total iron for a moon composed of a combination of free iron, olivine, and orthopyroxene.
Document ID
19780062864
Acquisition Source
Legacy CDMS
Document Type
Conference Proceedings
Authors
Dyal, P. (NASA Ames Research Center Moffett Field, Calif., United States)
Parkin, C. W. (Santa Clara, University Santa Clara, Calif., United States)
Daily, W. D. (Brigham Young University Provo, Utah, United States)