Image Details
Caption: Figure 1.
(a) and (c) U.S. SHARAD radargrams showing subsurface reflectors interpreted as the base of lava flows (highlighted by white arrows). (b) and (d) Corresponding U.S. cluttergrams, simulating the expected return of off-nadir reflections (clutter), which could be misinterpreted as subsurface structure.
© 2026. The Author(s). Published by the American Astronomical Society.