Gamma Ray and Radon Anomalies in Northern Taiwan as a Possible Preearthquake Indicator around the Plate Boundary

Figure 8

(a) A schematic diagram of the proposed physical mechanism based on the gamma ray anomaly of YMSG and radon anomaly at TPT. Stages 1 (b) and 2 (c) are considered to have occurred in order before the significant earthquakes. The schematic diagram showing a crustal-scale cross-section along the geophysical transect (AA in (a)) modified by Fu et al. [41] is shown in (b).

(a)

(b)

(c)