chart datum

简明释义

海图基准面

英英释义

例句

1.The depth of the water is measured from the chart datum, which is a reference point for navigation.

水深是从海图基准测量的，这是导航的参考点。

2.The pilot adjusted the vessel's course after checking the chart datum for tidal changes.

飞行员在检查潮汐变化的海图基准后调整了船只的航向。

3.Different regions may use different chart datum systems, which can affect navigation accuracy.

不同地区可能使用不同的海图基准系统，这会影响导航的准确性。

4.When planning the construction of a dock, engineers must consider the chart datum to ensure safe clearance.

在规划码头建设时，工程师必须考虑海图基准以确保安全间隙。

5.The chart datum is essential for ensuring that underwater hazards are accurately represented on nautical charts.

确保水下危险在航海图上准确表示的海图基准至关重要。

作文

Understanding the concept of chart datum is crucial for anyone involved in maritime navigation and cartography. In simple terms, chart datum refers to a base reference level used in nautical charts. It acts as a standard from which depths of water are measured and is essential for ensuring safe navigation in waterways. Without a clear understanding of chart datum, mariners could easily misinterpret the depths shown on charts, leading to potential hazards such as grounding or collisions.The significance of chart datum lies in its role in providing a consistent framework for measuring water levels. Different regions may use different chart datum, and these variations can arise due to factors like tidal influences, local geography, and historical practices. For instance, the most commonly used chart datum in the United States is the Mean Lower Low Water (MLLW), which represents the average of the lower low water heights observed over a specific period. This standardization helps ensure that navigational information is reliable and accurate across various maritime environments.Moreover, understanding chart datum is not only important for navigators but also for engineers, environmental scientists, and urban planners who work with coastal and riverine areas. For example, when constructing docks, bridges, or other infrastructure, professionals must consider the chart datum to ensure that their projects remain above water at all times, especially during high tide events. Failure to account for chart datum can lead to costly mistakes and safety hazards.In addition to practical applications, the concept of chart datum also has implications for environmental monitoring. Scientists studying coastal erosion, sea-level rise, and habitat changes rely on accurate measurements that are often referenced to a specific chart datum. This ensures that data collected over time can be compared and analyzed effectively, allowing for better understanding and management of our natural resources.Furthermore, advancements in technology have influenced how chart datum is established and utilized. With the advent of GPS and satellite-based systems, the ability to measure and record water levels has become more precise. However, it is still essential to relate these measurements back to a recognized chart datum to maintain consistency and accuracy in navigation and research.In conclusion, a thorough understanding of chart datum is vital for a wide range of professionals, from mariners to engineers and scientists. It serves as a foundational element in the field of navigation, ensuring safety and reliability in maritime operations. As we continue to develop our infrastructure and monitor environmental changes, recognizing the importance of chart datum will remain critical. By grasping this concept, individuals can contribute to safer navigation practices and better environmental stewardship, ultimately leading to a more sustainable interaction with our waterways and coastal regions.

理解图表基准的概念对任何参与海洋导航和制图的人来说都是至关重要的。简单来说，图表基准是指在航海图中使用的基准参考水平。它作为测量水深的标准，对于确保水道安全航行至关重要。如果没有对图表基准的清晰理解，航海者可能会错误解读图表上的水深，从而导致潜在的危险，如搁浅或碰撞。图表基准的重要性在于它为测量水位提供了一致的框架。不同地区可能使用不同的图表基准，这些差异可能由于潮汐影响、当地地理和历史习惯等因素而产生。例如，在美国，最常用的图表基准是平均低潮位（MLLW），它代表在特定时期内观察到的低潮高度的平均值。这种标准化有助于确保在各种海洋环境中导航信息的可靠性和准确性。此外，理解图表基准不仅对导航员重要，对从事沿海和河流区域工作的工程师、环境科学家和城市规划者也同样重要。例如，在建造码头、桥梁或其他基础设施时，专业人士必须考虑图表基准，以确保他们的项目在任何时候都高于水面，特别是在潮水高涨事件期间。未能考虑图表基准可能导致代价高昂的错误和安全隐患。除了实际应用外，图表基准的概念还对环境监测具有重要意义。研究沿海侵蚀、海平面上升和栖息地变化的科学家依赖于准确的测量，这些测量通常参考特定的图表基准。这确保了随时间收集的数据可以有效比较和分析，从而更好地理解和管理我们的自然资源。此外，技术的进步影响了图表基准的建立和利用方式。随着GPS和卫星系统的出现，测量和记录水位的能力变得更加精确。然而，将这些测量与公认的图表基准联系起来仍然至关重要，以保持导航和研究中的一致性和准确性。总之，充分理解图表基准对各种专业人士至关重要，从航海者到工程师和科学家。它作为导航领域的基础元素，确保海洋操作的安全性和可靠性。随着我们继续发展基础设施和监测环境变化，认识到图表基准的重要性将始终是关键。通过掌握这一概念，个人可以为更安全的导航实践和更好的环境管理做出贡献，最终实现与我们的水道和沿海地区更加可持续的互动。