active plate margin

简明释义

1. 活动板块边缘; 2. 主动板块边缘;

英英释义

例句

1.Scientists study the active plate margin (活跃的板块边界) to better understand earthquake patterns.

科学家研究活跃的板块边界以更好地理解地震模式.

2.Volcanoes often form along an active plate margin (活跃的板块边界), where tectonic plates collide.

火山通常形成在活跃的板块边界，即构造板块相撞的地方.

3.Earthquakes frequently occur near an active plate margin (活跃的板块边界), making these areas particularly dangerous.

地震常常发生在活跃的板块边界附近，使这些地区特别危险.

4.The Pacific Ring of Fire is an area known for its high seismic activity, primarily due to the presence of an active plate margin (活跃的板块边界).

太平洋火环是一个因其高地震活动而闻名的地区，这主要是由于存在一个活跃的板块边界.

5.The Himalayas are a result of the collision at an active plate margin (活跃的板块边界) between the Indian and Eurasian plates.

喜马拉雅山脉是印度板块和欧亚板块在活跃的板块边界相撞的结果.

作文

The Earth's lithosphere is divided into several tectonic plates that float on the semi-fluid asthenosphere beneath them. These plates are constantly moving, albeit at a very slow pace, and their interactions at various boundaries create geological features and phenomena that shape our planet. One of the most significant types of boundaries is known as the active plate margin, which refers to the areas where tectonic plates interact in dynamic and often destructive ways. In contrast to passive margins, where tectonic activity is minimal, active plate margins are characterized by frequent earthquakes, volcanic activity, and the creation of mountain ranges.At an active plate margin, two tectonic plates can either collide, move apart, or slide past each other. When plates collide, a process known as subduction occurs, where one plate is forced beneath another. This process is responsible for some of the most powerful earthquakes and volcanic eruptions in history. For instance, the Pacific Plate is being subducted beneath the North American Plate along the Cascadia Subduction Zone in the Pacific Northwest of the United States. This interaction not only leads to seismic activity but also creates volcanic arcs, such as the Cascade Range, which includes famous volcanoes like Mount St. Helens.Another type of active plate margin is found at divergent boundaries, where tectonic plates are moving apart. This movement allows magma from the mantle to rise and create new crust. A prime example of this is the Mid-Atlantic Ridge, where the Eurasian and North American plates are separating, leading to the formation of new oceanic crust and underwater volcanic activity. This process is crucial for the recycling of the Earth’s crust and contributes to the overall dynamics of our planet.Transform boundaries represent yet another aspect of active plate margins. Here, plates slide past one another horizontally. The friction between these plates can cause stress to build up until it is released as an earthquake. The San Andreas Fault in California is a well-known example of a transform boundary, where the Pacific Plate and the North American Plate grind against each other. This fault line has been the site of numerous significant earthquakes, demonstrating the potential dangers associated with active plate margins.Understanding active plate margins is essential for geologists and seismologists, as it helps them predict and mitigate the impacts of natural disasters. By studying the patterns of tectonic movement and the historical record of seismic activity, scientists can better assess the risks to communities living near these dynamic boundaries. Moreover, this knowledge is vital for urban planning and disaster preparedness, especially in regions that are prone to earthquakes and volcanic eruptions.In conclusion, active plate margins play a crucial role in shaping the Earth's geology and influencing the environment we live in. Their dynamic nature leads to the creation of stunning landscapes, but also poses significant risks to human life and infrastructure. As our understanding of these processes improves, we can better prepare for the challenges they present, ensuring that we coexist with the powerful forces of nature that define our planet.

地球的岩石圈被划分为几个构造板块，这些板块漂浮在其下方的半流体软流圈上。这些板块虽然移动缓慢，但它们在不同边界的相互作用产生了塑造我们星球的地质特征和现象。其中一个最重要的边界类型被称为活跃板块边缘，指的是构造板块以动态且常常具有破坏性的方式相互作用的区域。与被动边缘不同，在被动边缘中，构造活动较少，活跃板块边缘的特点是频繁的地震、火山活动和山脉的形成。在活跃板块边缘，两个构造板块可以发生碰撞、分开或相互滑动。当板块碰撞时，会发生一个叫做俯冲的过程，其中一个板块被迫位于另一个之下。这一过程导致了一些历史上最强大的地震和火山喷发。例如，太平洋板块正沿着美国太平洋西北部的卡斯卡迪亚俯冲带被俯冲到北美板块之下。这种相互作用不仅导致了地震活动，还创造了火山弧，如喀斯喀特山脉，其中包括著名的火山如圣海伦斯山。在分散边界处，可以找到另一种类型的活跃板块边缘，在这里，构造板块正在分开。这种运动使来自地幔的岩浆上升并形成新的地壳。中大西洋山脊就是一个典型例子，欧亚板块和北美板块正在分开，导致新海洋地壳的形成和水下火山活动。这个过程对于地球地壳的循环至关重要，并有助于我们星球的整体动力学。转换边界代表了活跃板块边缘的另一个方面。在这里，板块水平滑动彼此经过。这些板块之间的摩擦可能导致压力的积累，直到它作为地震释放出来。加利福尼亚的圣安德烈亚斯断层就是一个著名的转换边界，太平洋板块和北美板块在此相互摩擦。这个断层线曾发生过众多重大地震，展示了与活跃板块边缘相关的潜在危险。理解活跃板块边缘对地质学家和地震学家至关重要，因为它有助于他们预测和减轻自然灾害的影响。通过研究构造运动的模式和地震活动的历史记录，科学家可以更好地评估生活在这些动态边界附近的社区的风险。此外，这一知识对于城市规划和灾害准备至关重要，尤其是在易发生地震和火山喷发的地区。总之，活跃板块边缘在塑造地球地质和影响我们生活的环境方面发挥着关键作用。它们的动态特性导致了壮观的景观的形成，但也对人类生命和基础设施构成了重大风险。随着我们对这些过程的理解不断提高，我们可以更好地为它们带来的挑战做好准备，确保我们与定义我们星球的自然力量和谐共存。