Fig. 10: Schematic of statistical analysis of streak and seismic/impact event co-location.

A Schematic map of streaks (black dots, n = 22), impacts (blue, n = 4), and synthetic impacts (orange, n = 4); B Assessment of minimum distance between streaks and (real/synthetic) events; C Assessment of number of streaks in n° bins around (real/synthetic) events. A relation between an impact/seismic event and streaks would result in smaller minimum distances and increased numbers of streaks closer to the events. D Real example from Arabia Terra, including bright (white dots) and dark streak detections (black dots); diameter of circles does not properly reflect the 0.5, 2, and 5° radii used throughout this study. Note how the individual streak detections cluster along topographic inclines, mostly along crater walls. Viking merged color mosaic in the background.