National Height Datum 1985

简明释义

1985年国家高程基准

英英释义

例句

1.In flood risk assessments, the National Height Datum 1985 is crucial for determining potential inundation levels.

在洪水风险评估中，1985年国家高程基准对于确定潜在淹没水平至关重要。

2.When mapping terrain, the National Height Datum 1985 provides a consistent reference point for elevations.

在绘制地形图时，1985年国家高程基准提供了一个一致的高度参考点。

3.Engineers refer to the National Height Datum 1985 when designing infrastructure projects.

工程师在设计基础设施项目时会参考1985年国家高程基准。

4.The National Height Datum 1985 is essential for aviation safety in determining runway elevations.

1985年国家高程基准对于确定跑道高度在航空安全中至关重要。

5.The surveyor used the National Height Datum 1985 to ensure accurate elevation measurements.

测量师使用1985年国家高程基准以确保高度测量的准确性。

作文

The concept of a height datum is crucial in various fields such as surveying, engineering, and environmental science. Among the many height datums used globally, the National Height Datum 1985 stands out as a significant reference point for elevation measurements in the United States. Established by the National Oceanic and Atmospheric Administration (NOAA), the National Height Datum 1985 is designed to provide a consistent framework for measuring heights above mean sea level. This datum is essential for creating accurate topographic maps, conducting floodplain studies, and managing water resources effectively.Understanding the National Height Datum 1985 requires knowledge of how it was developed. The datum is based on a network of geodetic benchmarks that were surveyed across the country. These benchmarks are precisely measured points on the Earth's surface, allowing for accurate comparisons of elevation. The National Height Datum 1985 uses these benchmarks to establish a baseline from which all other elevations can be calculated. This ensures that engineers and planners have a reliable reference when designing infrastructure such as roads, bridges, and buildings.The importance of the National Height Datum 1985 extends beyond just construction and engineering. It plays a vital role in disaster management and environmental protection. For instance, during natural disasters like hurricanes or floods, understanding the elevation of an area can help emergency responders assess risks and plan evacuations. By using the National Height Datum 1985, officials can determine which areas are at risk of flooding and take preventative measures to protect lives and property.Furthermore, the National Height Datum 1985 is integral to scientific research. Researchers studying climate change and its effects on sea levels rely on accurate elevation data to analyze trends and make predictions. By comparing current measurements with historical data from the National Height Datum 1985, scientists can identify changes in land and water levels, contributing to our understanding of environmental shifts.In addition, the National Height Datum 1985 is continuously updated to reflect changes in the Earth's surface due to natural processes and human activities. Land subsidence, erosion, and construction can all affect elevation, and regular updates ensure that the datum remains accurate. This adaptability is crucial for maintaining the reliability of the height measurements that depend on it.In conclusion, the National Height Datum 1985 is more than just a technical reference; it is a critical tool that supports a wide range of applications from engineering to environmental science. Its establishment has provided a consistent framework for measuring heights across the United States, enabling better planning, research, and disaster management. As we continue to face challenges such as climate change and urban development, the importance of reliable height data will only grow, making the National Height Datum 1985 an invaluable resource for future generations.

高程基准的概念在测量、工程和环境科学等多个领域中至关重要。在全球众多高程基准中，国家高程基准1985作为美国海拔测量的重要参考点脱颖而出。由国家海洋和大气管理局（NOAA）建立的国家高程基准1985旨在提供一个一致的框架，用于测量相对于平均海平面的高度。这个基准对于创建准确的地形图、进行洪泛区研究以及有效管理水资源至关重要。理解国家高程基准1985需要了解其发展过程。该基准基于全国范围内的一个测量基准网络。这些基准是地球表面上精确测量的点，允许对海拔进行准确比较。国家高程基准1985利用这些基准建立一个基线，从中可以计算出所有其他海拔。这确保了工程师和规划人员在设计基础设施（如道路、桥梁和建筑物）时有一个可靠的参考。国家高程基准1985的重要性不仅限于建筑和工程。它在灾害管理和环境保护中也发挥着至关重要的作用。例如，在飓风或洪水等自然灾害期间，了解某个地区的海拔可以帮助应急响应人员评估风险并计划疏散。通过使用国家高程基准1985，官员们可以确定哪些地区面临洪水风险，并采取预防措施来保护生命和财产。此外，国家高程基准1985对于科学研究也至关重要。研究气候变化及其对海平面影响的研究人员依赖于准确的海拔数据来分析趋势并做出预测。通过将当前测量与来自国家高程基准1985的历史数据进行比较，科学家们可以识别土地和水位的变化，从而有助于我们理解环境变化。此外，国家高程基准1985不断更新，以反映由于自然过程和人类活动造成的地球表面的变化。土地沉降、侵蚀和建设都可能影响海拔，定期更新确保基准保持准确。这种适应性对于维护依赖于它的高度测量的可靠性至关重要。总之，国家高程基准1985不仅仅是一个技术参考；它是一个关键工具，支持从工程到环境科学的广泛应用。它的建立为美国各地的高度测量提供了一个一致的框架，从而实现更好的规划、研究和灾害管理。随着我们继续面临气候变化和城市发展的挑战，可靠的高度数据的重要性将只会增加，使得国家高程基准1985成为未来几代人不可或缺的资源。