|
| | Abstract | | LRS is an instrument onboard the Japanese lunar exploration satellite, KAGUYA. The scientific objective of LRS is to investigate the geologic structures of lunar subsurface. When extracting a subsurface echo from LRS data, a large obstacle is hyperbolic echo patterns due to reflections from surface topography such as the inner walls of the craters. In order to remove these hyperbolic echo patterns, we adopted the migration method that is popular in seismic reflection data processing. LRS data averaging in the flight direction and differencing in the range direction were performed as pre-processing of migration. As a result, the hyperbolic echo patterns were successfully focused to the original reflected points. After extracting a subsurface echo, we estimated the volume of a single unit of basalt eruption in a lunar mare. The estimated amount of lunar flood basalts is comparable to that of the terrestrial flood basalts. This infers that a series of lunar mare volcanic activity is similar extent as terrestrial one. |
|
|
|
| |
|