Sea Floor Dynamics as Evidence of Plate Tectonics

海底动力学作为板块构造的证据

Very large structures in the deep oceans may be studied without the effects of the weathering that tends to obscure continental features over long time periods. These large structures include deep trenches and long ridges where new material is added to the seafloor. These features can be successfully modeled with plate tectonics.

深海中的很大结构可能在不考虑天气侵蚀影响的情况下进行研究，因为天气侵蚀 tends to obscure continental features over long time periods。这些大结构包括深海沟和长山脉，其中新的物质被添加到海底。这些特征可以成功地用板块构造理论进行建模。

The dramatically deep trenches in the ocean floor can be modeled with convergent boundaries of plates.

海洋底部的深海沟壑可以用板块收敛边界来模拟。

When two oceanic plates converge, one is usually subducted under the other, and in the process a trench is formed. "The Marianas Trench (paralleling the Mariana Islands), for example, marks where the fast-moving Pacific Plate converges against the slower moving Philippine Plate.

当两个海洋板块碰撞时，通常一个会俯冲到另一个之下，这一过程会形成一个海沟。例如，马里亚纳海沟（对应马里亚纳群岛），就是太平洋板块（移动速度较快）与菲律宾板块（移动速度较慢）碰撞形成的。

Long ridge structures are found on the seafloor, the longest of which is the Mid-Atlantic Ridge. This feature can be modeled as a divergent boundary between plates.

海底存在长条状的地形结构，其中最长的是中大西洋海岭。这一特征可以被建模为板块之间的扩张边界。

挑战者深渊位于马里亚纳海沟的南端，其深入地球内部的深度（近11,000米）比世界最高峰珠穆朗玛峰高出海平面的 height（约8,854米）。