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Progress in Earth and Planetary Science
Fig. 1 | Progress in Earth and Planetary Science

Fig. 1

From: Right-lateral offset associated with the most recent earthquake on the Ikeda fault of the Median Tectonic Line, southwest Japan, revealed by ground-penetrating radar profiling

Fig. 1

a Tectonic map of the Japanese Islands. The plate motion vectors are calculated based on DeMets et al. (2010). Thick red lines indicate the active portion of the MTL. EU: Eurasian plate, NA: North American plate, PA: Pacific plate, PH, Philippine Sea plate, MTL: Median Tectonic Line, ISTL: Itoigawa-Shizuoka Tectonic Line. b Active fault traces of the MTL in central to eastern Shikoku (Tsutsumi and Okada 1996). Locs. 1 and 2 denote the surveyed locations of paleochannel offsets by Okada and Tsutsumi (1997) and Goto et al. (2003), respectively. IzF: Ishizuchi fault, HF: Hatano fault, SgF: Sangawa fault, IkF: Ikeda fault, MF: Mino fault, CF: Chichio fault. The topographic base map is made from the SRTM data (https://www2.jpl.nasa.gov/srtm/). c Geomorphology of the area around the survey site. The Ikeda fault trace is from the Active fault database of Japan (https://gbank.gsj.jp/activefault). The topographic base map is made using the 5-m-mesh digital elevation model of the Geospatial Information Authority of Japan

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