琉球海沟

mb≥4.0的地震主要分布于琉球海沟西侧的弧形带，并形成明显的Benioff带。

The behavior of the subduction zone and the stress state were discussed . The earthquakes of mb ≥ 4.0 distribute mainly in an arc-like narrow belt in the west side of the Ryukyu trench and form a clear Benioff zone beneath the island arc .

利用大地水准面起伏模拟琉球海沟洋坡岩石圈的挠曲

Using geoid to model seaward lithospheric flexure of the Ryukyu trench

琉球海沟构造地貌

On the Structural Landforms of the Ryukyu Trench

琉球海沟的构造和运动特征

Tectonics and motion of the Ryukyu trench

Ⅳ.琉球海沟强震带。

Ryukyu trench strong belt .

东亚大陆边缘自北向南发育了琉球海沟和马尼拉海沟等俯冲带。

Two subduction zones , the Ryukyu trench and Manila trench , exist in the East Asia continental margin .

以加瓜海脊为界，东、西两侧的琉球海沟属于两种不同板块构造环境下的产物。

By the boundary of the Gagua Ridge , Eastern Ryukyu trench is different from western Ryukyu trench in tectonic environment .

台湾以北是琉球海沟俯冲带，台湾以南为马尼拉海沟俯冲构造带。

It is close to the convergent plate boundary , which is Ryukyu Trench in the north and Manila Trench in the south .

根据一个正式调查指出，邻近台湾的琉球海沟与马尼拉海沟可能会发生8级以上的地震，所造成的海啸将不用一小时就能抵达台湾沿岸。

According to an official examination , a magnitude-8 earthquake may strike both the Ryukyu and Manila trenches , triggering a tsunami within one hour 's time .

华北地区受到太平洋板块向欧亚板块俯冲挤压的同时，受到从贝加尔湖经过大华北直到琉球海沟的广阔地域里存在着的统一的、方位为170°的引张应力场的控制。

The North China are controlled by the compressive stress in a NEE direction due to subduction of the Pacific Ocean plate and the identical tensile stress in 170 ° in a broad region from the Baikal to the Ryukyu trench throughout the North China .

琉球岛弧-海沟区的地壳结构总的来说属于过渡型地壳，但在海沟靠洋一侧已属于大洋型地壳，而从琉球海沟往东的西北菲律宾海盆，就完全属于典型的大洋地壳。

The Ryukyu arc-trench zone is belonging to the transition type crust as a whole , but the side of the trench is already belonging to the oceanic crust . And the northwest Philippines Basin to the east of the Ryukyu trench absolutely belongs to the typical oceanic crust .

这些特点说明琉球沟弧系上覆板块与俯冲板块的耦合比其他沟弧系弱，而琉球海沟本身又往南趋弱。

These characteristics reflect that couplings between the upper arc and the subduction slab of the Ryukyu trench are weak relative to other common trenches , and themselves weaken toward to the south .