Studies of Dynamic Landforms on Earth and Mars

Understanding the past climate of Mars requires investigation of geophysical processes that produce and modify features on the planet's surface. Arid deserts on Earth can serve as analogs for Mars. High precision topographic surveys and surface-penetrating radar remote sensing have been used to investigate ancient subsurface drainage features to understand long-term climate changes. To better understand the overlying material and the wind regime on both planets, field surveys are used to measure movement of large sand dunes. This talk will describe results from field work in Egypt and North America and the implications for recent findings of subsurface water on Mars.

About the Speaker

Andrew Johnston oversees the museums’ efforts in astronomy research and engagement, cutting-edge space visualizations, near-space exploration, history of astronomy research, and conservation of and outreach with the Adler’s world-renowned collections. Before joining the Adler team, Dr. Johnston had worked in museums for 30 years, conducting science research and developing new museum programs. Johnston received his PhD in Geographical Sciences from the University of Maryland, College Park.