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Earth, Planets and Space
Figure 1 | Earth, Planets and Space

Figure 1

From: Evolutionary process of Beppu Bay in central Kyushu, Japan: a quantitative study of the basin-forming process controlled by plate convergence modes

Figure 1

Index maps of the study area. (a) Tectonic elements around southwest Japan. An open arrow shows the present relative motion of the subducting Philippine Sea plate. (b) Bouguer gravity anomaly map around the Hohi Volcanic Zone (HVZ) after Komazawa (2004). The Bouguer density is 2,670 kg/m3. (c) Coverage of the reflection seismic survey around the Beppu Bay. The range for line J shown in Figure 9a is indicated by a segment. The gray dashed lines are part of the active traces of the Median Tectonic Line. The central portion of the HVZ is annotated by the abbreviation.

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