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Earth, Planets and Space
Fig. 2 | Earth, Planets and Space

Fig. 2

From: Magnetotelluric transect of Unzen graben, Japan: conductors associated with normal faults

Fig. 2

Phase tensor ellipse (Caldwell et al. 2004) maps for different sounding periods (0.00125 s, 0.1 s, 1 s, 25.6 s, 51.2 s, 102.4 s). Color-filled ellipses represent the phase tensor ellipse with its orientation derived from azimuth \(\alpha - \beta\). The color indicates \(\beta\) skew angle. The sites having very large error bars (outliers) at the corresponding periods are removed. Site dependent of orientation strongly indicate 3-D behavior

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