Fig. 3
From: Earth-affecting solar transients: a review of progresses in solar cycle 24
An example of measuring CME (July 12–14, 2012 CME) leading fronts using slice-stacking plot or J-map and geometric models. a The density track of the CME viable in a J-map from STEREO-A. b Fits of the extracted CME track with the SSEF (Self-Similar Expansion Fitting) model. c The resulting geometry of the event, with propagation directions derived from FP (dot-dashed red line, 0° full width), SSEF (solid green line, 90° full width), and HM (dotted blue line, 180° full width) geometric assumption of the CME. Adopted from Möstl et al. (2014)