Bright Tracks on Mars: Alternate Dust Devil Tracks

Introduction: Some linear, curved and "curlicue" albedo features on Mars are attributed to the tracks left by the passage of dust devils. Most such features are lower in albedo than the surrounding terrain, and result from the removal of bright dust from the surface by atmospheric vortexes, exposing a darker substrate. Some dust devil tracks, however, are of higher albedo than the surrounding terrain (Figure 1).