FEATURES OF GEOPHYSICAL FIELD AND CRUSTAL STRUCTURE OF OKINAWA TROUGH AND ITS ADJACENT REGIONS

Based on the latest geophysical data from the areas of the Okinawa Trough, the paper analyzed the characteristics of the seismic wave field, gravity field, magnetic field and heat flow field of the Okinawa Trough, we computed the Curie depths and Moho depth of the Okinawa Trough, studied the distribution patterns of the Curie depth and the Moho depth. The Curie depth changes from 14 km to 28 km and the Moho depth changes between 4 to 28 km in the Trough and its adjacent. OBS survey and seismic data interpretation are adopted for revealing the deep crustal structure of the Trough and surrounding areas.