| 引用本文: |
祁江豪, 梅西, 张勇, 张训华, 陈晓辉, 李阳, 吴志强, 张菲菲. 中国在冲绳海槽深部地震探测的新进展[J]. 海洋地质前沿, 2025, 41(2): 105-108. doi: 10.16028/j.1009-2722.2025.026
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| Citation: |
QI Jianghao, MEI Xi, ZHANG Yong, ZHANG Xunhua, CHEN Xiaohui, LI Yang, WU Zhiqiang, ZHANG Feifei. New progress of China's deep seismic survey in the Okinawa Trough[J]. Marine Geology Frontiers, 2025, 41(2): 105-108. doi: 10.16028/j.1009-2722.2025.026
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表 1 冲绳海槽地区速度与密度结构框架
Table 1. Velocity and density structure framework of the Okinawa Trough
| 地层 | 速度/（km/s） | 密度/（g/cm3） |
| Q＋N | 1.7～3.0 | 2.20 |
| 声学基底层 （前中新统浅变质岩层） | 4.0～5.5 | 2.33～2.50 |
| 上地壳 | 5.5～6.4 | 2.64 |
| 下地壳 | 6.4～Moho | 2.76 |
| 下地壳高速体（HVZ） | 7.2 | 2.81～2.82 |
| 亏损上地幔（LVZ） | 7.3 | 2.83 |
| 上地幔 | 8 | 2.99 |
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图(4)
表(1)
Geological structure of the East China Sea and its adjacent area and location of the wide-angle seismic profile （OBS2015，OBS2024）
Crustal velocity-density structure model from East China Sea Shelf to Southern Okinawa Trough
Back-arc magma upwelling model of Okinawa Trough
Seismic record section of OBS stations in Okinawa Trough
