Retrieval of the bulk density of lunar subsurface layer from diurnal differences of Chang′E-2 microwave and LRO infrared brightness temperature data

摘要: Abstract Comparisons of microwave brightness temperature (TB) observed by Chang′E-1 and Chang′E-2 with FeO + TiO 2 content Clementine indicate a correspondence diurnal difference TB to in distribution, especially for 37 GHz. The correlation 37 GHz is discussed. Consequently, we choose the regions, e.g. (30°N, 25°W) Mare Imbrium 55°W) Oceanus Procellarum uniform further studying bulk density lunar subsurface layer, avoiding interference FeO TiO . surface regarded as two-layer model. According infrared LRO which approximately equal temperature, it found that thermophysical properties upper layer appear sampled regions. In way, distinct differences both regions are related layer. A theoretical analysis based on model confirms between Finally, retrieved from Chang′E-2, ranging 1.90 2.04 g/cm 3 profile at 33°N extending 120°W 6°E.