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Fig. 3 | Earth, Planets and Space

Fig. 3

From: Seismic structure of rifting in the Okinawa Trough, an active backarc basin of the Ryukyu (Nansei-Shoto) island arc–trench system

Fig. 3

Geophysical maps in and around the OT. a Free-air gravity anomaly map. b Bouguer gravity anomaly map. The Bouguer anomaly was calculated using an average crustal density of 2.67 × 103 kg/m3 and corrected for a terrain effect within a radius of 30 km (Oikawa and Kaneda 2007). c A magnetic anomaly on the shaded bathymetry. The magnetic anomaly map was produced by a combination of our original data, CCOP (http://www.ccop.or.th/), and EMAG2 (https://doi.org/10.7289/v5mw2f2p)

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