Fig. 12From: Solar wind parameter and seasonal variation effects on the South Atlantic Anomaly using Tsyganenko ModelsArea threshold variation effect. a demonstrates the SAA area temporal variation, while c the contour plot level of each boundary. b, d illustrate the correlation coefficient between the SAA area, calculated based on the three different threshold values, the Dst index, and the geodipole tilting angle (\(\mu\))Back to article page