geoidal surface

简明释义

大地水准面

英英释义

例句

1.GPS systems rely on the geoidal surface (大地水准面) for precise altitude measurements.

GPS系统依赖于大地水准面进行精确的高度测量。

2.The satellite's position was calculated relative to the geoidal surface (大地水准面) to ensure accuracy in mapping.

卫星的位置是相对于大地水准面计算的，以确保制图的准确性。

3.Engineers must consider the geoidal surface (大地水准面) when designing infrastructure that interacts with sea levels.

工程师在设计与海平面互动的基础设施时，必须考虑大地水准面。

4.In geodesy, the geoidal surface (大地水准面) is used as a reference point for measuring elevations.

在大地测量学中，大地水准面被用作测量高程的参考点。

5.Understanding the geoidal surface (大地水准面) is crucial for accurate land surveying.

理解大地水准面对于准确的土地测量至关重要。

作文

The concept of the geoidal surface is fundamental in geodesy and understanding Earth's shape. The geoidal surface, defined as the equipotential surface of the Earth's gravity field, represents the mean sea level across the globe, extending under continents and oceans. It is not a perfect geometric figure but rather a complex, undulating surface that reflects variations in gravitational pull due to factors like density differences within the Earth. This makes the geoidal surface crucial for applications in navigation, satellite positioning, and understanding sea level rise.In practical terms, the geoidal surface serves as a reference point for measuring elevations and depths. For instance, when surveying land, the height of a point is often measured relative to the geoidal surface. This allows for a more accurate representation of topography, as it accounts for the unevenness of Earth's gravitational field. Without this reference, measurements could be misleading, particularly in areas with significant geological variations.Moreover, the geoidal surface plays a vital role in modern technology, especially in Global Navigation Satellite Systems (GNSS). When satellites orbit the Earth, they rely on precise calculations that take the geoidal surface into account to determine locations accurately. This integration is essential for various applications, from everyday navigation on smartphones to critical operations in aviation and maritime industries.Understanding the geoidal surface also contributes to scientific research, particularly in climate studies. As global warming leads to changes in sea levels, scientists monitor these shifts by comparing current sea levels to the geoidal surface. Such studies help predict future impacts on coastal communities and ecosystems, informing policy decisions and disaster preparedness efforts.In conclusion, the geoidal surface is more than just a theoretical concept; it is a practical tool that enhances our understanding of the Earth and informs various fields ranging from navigation to climate science. As technology continues to evolve, the importance of the geoidal surface will only grow, underscoring the need for continued research and education in geodesy and related disciplines. The intricate relationship between the geoidal surface and the Earth's gravitational field highlights the complexity of our planet, inviting further exploration and understanding of its physical properties and behaviors.

“大地水准面”的概念在大地测量学和理解地球形状方面是基础性的。大地水准面被定义为地球引力场的等势面，代表全球的平均海平面，延伸到大陆和海洋之下。它不是一个完美的几何图形，而是一个复杂的起伏表面，反映了由于地球内部密度差异等因素造成的引力变化。这使得大地水准面在导航、卫星定位和理解海平面上升等应用中至关重要。在实际操作中，大地水准面作为测量高程和深度的参考点。例如，在土地测量时，通常相对于大地水准面来测量某一点的高度。这允许对地形进行更准确的表示，因为它考虑了地球引力场的不均匀性。如果没有这个参考，测量可能会误导，特别是在地质变化显著的地区。此外，大地水准面在现代技术中发挥着重要作用，特别是在全球导航卫星系统（GNSS）中。当卫星绕地球轨道运行时，它们依赖于精确的计算，这些计算考虑了大地水准面以准确确定位置。这种整合对于各种应用至关重要，从智能手机上的日常导航到航空和海洋工业中的关键操作。理解大地水准面也有助于科学研究，特别是在气候研究中。随着全球变暖导致海平面变化，科学家通过将当前海平面与大地水准面进行比较来监测这些变化。这些研究有助于预测未来对沿海社区和生态系统的影响，告知政策决策和灾难应急准备工作。总之，大地水准面不仅仅是一个理论概念；它是一个实用工具，增强了我们对地球的理解，并为从导航到气候科学等各个领域提供了信息。随着技术的不断发展，大地水准面的重要性只会增加，这突显了在大地测量学及相关学科中继续研究和教育的必要性。大地水准面与地球引力场之间错综复杂的关系突显了我们星球的复杂性，邀请进一步探索和理解其物理特性和行为。