Mapping the Surface Composition of Venus in the Near Infrared

Abstract

Observing the surface of Venus in the near-infrared from orbit or from an aerial platform will provide new insights into the mineralogy of Venus. In combination with a high-resolution radar mapper that provides accurate topographic data, this would allow global or regional mapping of the surface composition at a spatial scale of approximately 50km. In addition to the high scientific value of this data in itself, VEM will also provide important constraints for future landing site selections. Taking again the example of Quetzalpetlatl Corona, the near-infrared data also identify lava flows that show unusual surface composition. Depending on the science strategy for a lander this might be areas to target or to avoid. Combining the near infrared data with radar derived geological information will allow further conclusions on the evolution of Venus to be drawn.