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Earth, Planets and Space
Fig. 7 | Earth, Planets and Space

Fig. 7

From: Continuity of subsurface fault structure revealed by gravity anomaly: the eastern boundary fault zone of the Niigata plain, central Japan

Fig. 7

The results of 2D density structure analysis along the two gravity survey lines of (a) C, and (b) D. (Top) Topographic map around a survey line. Gray line shows a gravity survey line. Shaded area is a projection range of the data. Red lines indicate surface traces of active faults. (Second from the top) Bouguer anomaly. (Middle) First horizontal derivative (HD). (Second from the bottom) First vertical derivative (VD). (Bottom) 2D density structure model along the gravity survey line (see Fig. 1b for the location). Triangles and red lines indicate the deep borehole sites and active faults, respectively

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