Material Transport by Secondary Cratering at the Lunar Landing Site of Chang’e-4

Abstract

The figures here include the following information: ◼ Figure S1: The Chang’e-4 landing site is entirely covered by secondaries and it is generally depleted with surface boulders. ◼ Figure S2: DEM constructed based on traditional photogrammetric methods and the distribution of boulders at around the investigated crater. ◼ Figure S3: The other fresh craters encountered by the Yutu-2 rover. ◼ Figure S4: Normal appearance of the small crater population in the landing area, where craters show different states of topographic degradation. ◼ Figure S5: Secondaries of the Zhinv crater are not obviously recognizable seen from the orbital images due to their small sizes. Ridges and troughs formed by the Zhinyu crater are visible as far as ~20 km from the crater center.