Fig. 3
From: Shallow structure and late quaternary slip rate of the Osaka Bay fault, western Japan
Multi-beam bathymetry data (10-m horizontal grid spacing) acquired in this study, plotted with the M7000 digital bathymetry data (light blue contours) by the Japan Hydrographic Association. (a) Location of survey area. (b). Close-up of survey area. Grey lines: seismic reflection survey lines (#1–15). Red line: Trace of the Osaka Bay Fault. Box shows region of distinct sand wave structures closed-up in Fig. 5a. Blue dotted square: area of negative polarity reflector observed along Lines 3, 5, and 12 (Sect. 4.2.1)