progradation

简明释义

英[ˌprəʊɡrəˈdeɪʃən]美[prəɡrəˈdeɪʃən]

n. 推进，前积；外伸作用，[海洋] 进积作用

英英释义

单词用法

同义词

反义词

例句

1.The results show that the coastal line progradation and erosion are proceeding simultaneously, and generally the formed land area in the delta is decreasing.

结果表明，黄河三角洲在整体淤进的同时伴随着蚀退，三角洲的造陆面积呈逐渐减小的趋势。

2.The results show that the coastal line progradation and erosion are proceeding simultaneously, and generally the formed land area in the delta is decreasing.

结果表明，黄河三角洲在整体淤进的同时伴随着蚀退，三角洲的造陆面积呈逐渐减小的趋势。

3.The controlling factors for the development of gravity-flow deposits on prodelta slope are deltaic progradation and the double-layer structure of the slope.

前三角洲斜坡发育重力流的主要控制因素是三角洲的快速进积作用和前三角洲斜坡自身存在的二元结构。

4.With rise of base level, sediments showed retrogradation features, in contrast, with drop of base level, sediments had progradation.

随着基准面的下降，沉积物总体呈进积特征。

5.Highstand system tracts are characterized by acceleration progradation sedimentation.

高位体系域表现为加积—进积沉积特征。

6.Longitudinal delta is developed in the north, fan-delta in the east, and slope progradation complex in the west.

该区北部形成纵向三角洲，东部形成扇三角洲，西部形成斜坡前积复合体。

7.In the context of sedimentary geology, progradation is essential for understanding how landforms evolve over time.

在沉积地质学的背景下，前移对于理解地貌如何随时间演变至关重要。

8.The progradation of the shoreline can significantly impact local ecosystems and habitat availability.

海岸线的前移可能会对当地生态系统和栖息地的可用性产生重要影响。

9.Geologists often analyze sediment layers to determine the rate of progradation in coastal environments.

地质学家通常分析沉积层以确定沿海环境中前移的速度。

10.The study of river delta formation involves understanding the process of progradation, which refers to the advance of land into a body of water.

河口三角洲形成的研究涉及理解前移的过程，即土地向水体的推进。

11.The progradation of a delta can create new land areas that are suitable for agriculture.

三角洲的前移可以创造出适合农业的新土地区域。

作文

The concept of progradation refers to the process by which landforms, such as deltas and beaches, extend outward into a body of water due to the accumulation of sediment. This phenomenon is particularly significant in coastal and riverine environments where sediment transport plays a crucial role in shaping the landscape. Understanding progradation is essential for various fields, including geology, environmental science, and civil engineering. In geological terms, progradation occurs when the rate of sediment supply exceeds the rate of erosion or subsidence. This leads to the gradual buildup of land, allowing ecosystems to flourish in newly formed areas. For instance, the Mississippi River Delta is a prime example of progradation, where sediment carried by the river has created extensive marshlands and habitats for diverse wildlife. These regions are not only vital for biodiversity but also serve as natural buffers against storm surges and coastal erosion. From an environmental perspective, progradation has important implications for climate change adaptation. As sea levels rise, many coastal areas face the threat of inundation. However, areas that experience active progradation can potentially offset some of these impacts by creating new land that can absorb excess water. This dynamic process highlights the resilience of certain ecosystems and their ability to adapt to changing conditions. Moreover, the study of progradation can inform urban planning and infrastructure development. Understanding how and where land is likely to accumulate can help engineers design effective flood defenses and manage resources sustainably. For example, in regions prone to flooding, planners can utilize knowledge of progradation to identify safe zones for construction and develop strategies that enhance natural sediment deposition processes. However, human activities can significantly alter the natural processes of progradation. Dams, levees, and other structures can disrupt sediment transport, leading to a decrease in progradation and, consequently, increased vulnerability to erosion. Additionally, pollution and land reclamation efforts can further complicate the balance between sediment supply and erosion. It is crucial for policymakers and stakeholders to consider the effects of such interventions on natural processes to ensure sustainable management of coastal and riverine environments. In conclusion, progradation is a vital geological process that contributes to the formation of new land and the maintenance of healthy ecosystems. Its significance extends beyond geology, impacting environmental management and urban planning. As we continue to face challenges related to climate change and human development, understanding and preserving the natural processes of progradation will be essential for fostering resilient landscapes and communities. By prioritizing sustainable practices and respecting the delicate balance of natural systems, we can protect our shores and waterways for future generations. Overall, the study of progradation offers valuable insights into the interplay between natural forces and human influence, emphasizing the need for a holistic approach to environmental stewardship.

“前进”这个概念指的是地貌，如三角洲和海滩，由于沉积物的积累而向水体扩展的过程。这种现象在沿海和河流环境中尤为重要，在这些地方，沉积物运输在塑造景观方面发挥着关键作用。理解progradation对地质学、环境科学和土木工程等多个领域至关重要。从地质学的角度来看，progradation发生在沉积物供应的速度超过侵蚀或沉降的速度时。这导致土地逐渐堆积，使生态系统能够在新形成的区域繁荣。例如，密西西比河三角洲就是一个典型的progradation实例，河流携带的沉积物创造了广泛的湿地和多样化野生动物的栖息地。这些地区不仅对生物多样性至关重要，而且还作为抵御风暴潮和沿海侵蚀的天然缓冲区。从环境的角度来看，progradation对气候变化适应具有重要意义。随着海平面上升，许多沿海地区面临淹没的威胁。然而，经历主动progradation的地区可以通过创造新的土地来吸收多余的水，从而潜在地抵消一些影响。这一动态过程突显了某些生态系统的韧性及其适应变化条件的能力。此外，研究progradation可以为城市规划和基础设施发展提供信息。了解土地可能如何以及在哪里堆积，可以帮助工程师设计有效的防洪措施和可持续地管理资源。例如，在易受洪水影响的地区，规划人员可以利用progradation的知识来识别安全建设区，并制定增强自然沉积过程的战略。然而，人类活动可以显著改变progradation的自然过程。大坝、堤坝和其他结构可能会干扰沉积物运输，导致progradation减少，从而增加侵蚀的脆弱性。此外，污染和填海造地的努力可能进一步复杂化沉积物供应和侵蚀之间的平衡。政策制定者和利益相关者必须考虑这些干预措施对自然过程的影响，以确保沿海和河流环境的可持续管理。总之，progradation是一个重要的地质过程，它有助于新土地的形成和健康生态系统的维持。它的重要性超越了地质学，影响环境管理和城市规划。随着我们继续面临与气候变化和人类发展相关的挑战，理解和保护progradation的自然过程对于促进韧性景观和社区至关重要。通过优先考虑可持续实践并尊重自然系统的微妙平衡，我们可以保护我们的海岸和水域，为子孙后代铺平道路。总体而言，progradation的研究提供了有关自然力量与人类影响之间相互作用的宝贵见解，强调了环境管理的整体方法的必要性。