back arc subduction

简明释义

弧后俯冲;

英英释义

例句

1.Geologists study back arc subduction 后弧俯冲 to understand the dynamics of plate tectonics.

地质学家研究后弧俯冲以理解板块构造的动态。

2.In regions experiencing back arc subduction 后弧俯冲, earthquakes are often more frequent.

在经历后弧俯冲的地区，地震通常更为频繁。

3.The Mariana Islands are a result of back arc subduction 后弧俯冲 processes occurring in the Pacific Ocean.

马里亚纳群岛是太平洋中发生的后弧俯冲过程的结果。

4.The geological features of this area are heavily influenced by back arc subduction 后弧俯冲 events.

该地区的地质特征受到后弧俯冲事件的严重影响。

5.The process of back arc subduction 后弧俯冲 can lead to the formation of volcanic arcs.

后弧俯冲可以导致火山弧的形成。

作文

Back arc subduction is a geological process that occurs in certain tectonic settings, particularly in oceanic regions where an oceanic plate is being forced beneath another tectonic plate. This phenomenon is crucial for understanding the dynamics of plate tectonics and the formation of various geological features. The term 'back arc' refers to the area located behind a volcanic arc, which is formed by the subduction of one tectonic plate beneath another. In this context, back arc subduction (后弧俯冲) involves the movement of the back arc region, where the lithosphere is being pulled apart due to the opposing forces generated by the subduction process.In many cases, back arc subduction (后弧俯冲) leads to the development of new ocean basins and volcanic activity. As the oceanic plate descends into the mantle, it creates a trench at the subduction zone, while simultaneously causing the back arc region to undergo extension. This extension can result in the formation of rift valleys and new volcanic islands, contributing to the overall complexity of the tectonic landscape.The geological implications of back arc subduction (后弧俯冲) are significant. It can influence the distribution of earthquakes, as the stresses accumulated during the subduction process can lead to seismic events. Additionally, the formation of magma from the melting of the subducting plate can result in volcanic eruptions, impacting local ecosystems and human settlements.One of the most studied examples of back arc subduction (后弧俯冲) is found in the Western Pacific region, particularly around the Mariana Islands and the Tonga Trench. Here, the complex interactions between the Pacific Plate and surrounding plates create a dynamic environment characterized by frequent volcanic activity and earthquakes. The study of these regions provides valuable insights into the processes of plate tectonics and the evolution of the Earth's crust.Furthermore, back arc subduction (后弧俯冲) plays a vital role in the recycling of Earth's materials. As the oceanic plate descends into the mantle, it carries with it sediments and minerals that can contribute to the generation of new magma. This process not only shapes the landscape but also influences the geochemical cycles that are essential for life on Earth.In conclusion, understanding back arc subduction (后弧俯冲) is essential for geologists and researchers studying the Earth's tectonic processes. It highlights the interconnectedness of geological phenomena and the importance of tectonic activity in shaping our planet. By examining the effects of back arc subduction (后弧俯冲), we can gain a deeper appreciation for the forces that drive geological change and how they impact both the environment and human societies.