accretionary bar

简明释义

1. 加积沙坝; 2. 增生沙坝; 3. 增长沙坝;

英英释义

例句

1.Geologists studied the accretionary bar to understand sediment deposition patterns in the area.

地质学家研究了沉积沙洲以了解该地区的沉积模式。

2.During the low tide, we could see the accretionary bar exposed on the beach.

在退潮时，我们可以看到露出的沉积沙洲在海滩上。

3.Boaters need to be cautious of the accretionary bar that can cause shallow water hazards.

船只需要小心可能造成浅水危险的沉积沙洲。

4.The formation of the accretionary bar altered the local ecosystem by creating new habitats for wildlife.

该沉积沙洲的形成通过为野生动物创造新的栖息地改变了当地生态系统。

5.The river's flow created an accretionary bar, which is a buildup of sediment along the banks.

河流的流动形成了一个沉积沙洲，这是沿着河岸沉积物的堆积。

作文

In the study of geology and sedimentology, the term accretionary bar refers to a type of sedimentary formation that occurs in river deltas and coastal environments. These bars are created through the process of sediment accumulation, where materials such as sand, silt, and clay are deposited by water flow. The formation of an accretionary bar is primarily influenced by the dynamics of water movement and the availability of sediment. As rivers flow towards larger bodies of water, they often lose energy, causing sediments to settle and form these distinctive bars.The significance of accretionary bars lies not only in their geological implications but also in their ecological roles. These formations can create unique habitats for various species of plants and animals. For instance, the vegetation that grows on these bars can stabilize the sediment, preventing erosion and promoting biodiversity. Birds, fish, and other wildlife often rely on accretionary bars as breeding grounds or feeding areas due to the rich nutrients found in the sediment.From a human perspective, accretionary bars can also have practical implications. They can affect navigation in rivers and coastal areas, as their presence may alter water flow patterns. Understanding the dynamics of these formations is crucial for effective management of waterways and for planning infrastructure projects. Engineers and environmental scientists must consider the impact of accretionary bars when designing bridges, dams, and other structures to ensure they do not disrupt the natural sediment transport processes.Moreover, the study of accretionary bars can provide insights into past environmental conditions. By analyzing the layers of sediment that make up these bars, scientists can infer historical changes in climate, sea level, and sediment supply. This information is invaluable for predicting future changes in our environment, especially in the context of climate change.In conclusion, the concept of accretionary bars encompasses a wide range of scientific, ecological, and practical considerations. Their formation is a fascinating example of how natural processes shape our landscapes, while their ecological importance highlights the interconnectedness of different species within an ecosystem. As we continue to study and understand these formations, we gain valuable knowledge that can help us protect our natural resources and manage our environments more sustainably. The implications of accretionary bars extend far beyond their physical presence, influencing both the natural world and human activities alike.

在地质学和沉积学的研究中，术语accretionary bar指的是一种沉积物形成，通常发生在河口和沿海环境中。这些沙洲是通过沉积物积累的过程形成的，其中材料如沙子、淤泥和粘土被水流沉积。accretionary bar的形成主要受水流动态和沉积物可用性的影响。当河流流向更大的水体时，通常会失去能量，导致沉积物沉降并形成这些独特的沙洲。accretionary bars的重要性不仅在于其地质意义，还在于其生态作用。这些形成可以为各种植物和动物物种创造独特的栖息地。例如，生长在这些沙洲上的植被可以稳定沉积物，防止侵蚀并促进生物多样性。鸟类、鱼类和其他野生动物常常依赖accretionary bars作为繁殖地或觅食区，因为沉积物中富含营养。从人类的角度来看，accretionary bars也可能具有实际意义。它们可以影响河流和沿海地区的航行，因为它们的存在可能改变水流模式。了解这些形成的动态对有效管理水道和规划基础设施项目至关重要。工程师和环境科学家必须考虑accretionary bars的影响，以确保它们不会干扰自然沉积物运输过程。此外，研究accretionary bars可以提供对过去环境条件的洞察。通过分析构成这些沙洲的沉积层，科学家可以推断气候、海平面和沉积物供应的历史变化。这些信息对于预测我们环境的未来变化，特别是在气候变化的背景下，具有不可估量的价值。总之，accretionary bars的概念涵盖了广泛的科学、生态和实践考虑。它们的形成是自然过程如何塑造我们景观的迷人例子，而它们的生态重要性突显了生态系统内不同物种之间的相互联系。随着我们继续研究和理解这些形成，我们获得了宝贵的知识，可以帮助我们保护自然资源，更可持续地管理我们的环境。accretionary bars的影响远远超出了其物理存在，影响着自然界和人类活动。