geoidal height map

简明释义

大地水准面高度图

英英释义

例句

1.The geoidal height map is essential for understanding the Earth's gravitational field variations.

大地高程图对于理解地球重力场变化至关重要。

2.Engineers refer to the geoidal height map when designing infrastructure that interacts with the terrain.

工程师在设计与地形相互作用的基础设施时会参考大地高程图。

3.The surveyor used a geoidal height map to accurately determine the elevation of the land.

测量员使用大地高程图准确确定土地的海拔。

4.In coastal studies, a geoidal height map helps to assess sea level rise impact.

在沿海研究中，大地高程图有助于评估海平面上升的影响。

5.A geoidal height map can be used to improve GPS accuracy in navigation systems.

大地高程图可用于提高导航系统中GPS的准确性。

作文

The Earth is a complex and dynamic planet, with various features that influence our understanding of geography, navigation, and even climate. One crucial aspect of this complexity is the shape of the Earth itself, which is not a perfect sphere but rather an irregular shape known as a geoid. To better understand this concept, scientists create a representation called a geoidal height map, which provides valuable information about the Earth's gravitational field and its variations across different regions. A geoidal height map (大地水准面高度图) essentially shows the height of the geoid above or below a reference ellipsoid, which is a mathematically defined surface that approximates the shape of the Earth. These maps are generated using data collected from satellites and ground-based measurements, allowing researchers to visualize how the Earth's gravitational field varies due to factors such as topography, geological structures, and changes in mass distribution. This information is vital for various applications, including precise navigation, satellite positioning, and understanding sea level rise. For instance, in the field of geodesy, the study of Earth's shape and size, geoidal height maps are used to improve the accuracy of Global Navigation Satellite Systems (GNSS). By providing a more accurate model of the Earth's surface, these maps help reduce errors in determining positions, which is essential for activities like surveying, construction, and even autonomous vehicle navigation. Moreover, geoidal height maps play a significant role in oceanography. Understanding the relationship between the geoid and sea level is crucial for predicting ocean currents, tides, and the impact of climate change on coastal areas. When scientists analyze the differences between the geoid and mean sea level, they can gain insights into how sea levels are changing over time and how these changes might affect human populations and ecosystems. In addition to practical applications, geoidal height maps also contribute to scientific research. They help geologists understand tectonic movements and the effects of earthquakes. By studying the variations in the geoid, researchers can infer information about subsurface structures and the distribution of mass within the Earth, leading to a deeper understanding of geological processes. Furthermore, these maps have implications for environmental studies. For example, as researchers investigate the impacts of climate change, geoidal height maps can provide critical data on how melting ice caps and glaciers are affecting global sea levels. By monitoring these changes, scientists can better predict future scenarios and advise policymakers on necessary actions to mitigate the effects of climate change. In conclusion, the geoidal height map (大地水准面高度图) is an essential tool for understanding the Earth's shape and gravitational field. Its applications range from improving navigation systems to studying environmental changes and geological processes. As technology advances and more data becomes available, the accuracy and utility of geoidal height maps will continue to grow, further enhancing our understanding of our planet and its dynamics. Through continued research and innovation, we can harness the power of these maps to address some of the most pressing challenges facing humanity today.

地球是一个复杂而动态的星球，具有各种特征，影响着我们对地理、导航甚至气候的理解。这个复杂性的重要方面是地球本身的形状，它不是一个完美的球体，而是一个不规则的形状，称为大地水准面。为了更好地理解这一概念，科学家们创建了一种称为大地水准面高度图的表示，这为我们提供了有关地球引力场及其在不同地区变化的宝贵信息。大地水准面高度图（geoidal height map）本质上显示了大地水准面相对于参考椭球体的高度，后者是一个数学定义的表面，近似于地球的形状。这些地图是通过从卫星和地面测量收集的数据生成的，使研究人员能够可视化地球引力场如何因地形、地质结构和质量分布变化等因素而变化。这些信息对于精确导航、卫星定位和理解海平面上升等各种应用至关重要。例如，在大地测量学领域，即研究地球的形状和大小，大地水准面高度图用于提高全球导航卫星系统（GNSS）的准确性。通过提供更准确的地球表面模型，这些地图有助于减少确定位置时的误差，这对于测量、建筑甚至自主车辆导航等活动至关重要。此外，大地水准面高度图在海洋学中也发挥着重要作用。理解大地水准面与海平面之间的关系对于预测洋流、潮汐以及气候变化对沿海地区的影响至关重要。当科学家分析大地水准面与平均海平面之间的差异时，他们可以深入了解海平面随时间变化的情况，以及这些变化可能对人类和生态系统产生的影响。除了实际应用，大地水准面高度图还为科学研究做出了贡献。它们帮助地质学家理解构造运动和地震的影响。通过研究大地水准面的变化，研究人员可以推断出有关地下结构和地球内部质量分布的信息，从而深入了解地质过程。此外，这些地图对环境研究也有影响。例如，当研究人员调查气候变化的影响时，大地水准面高度图可以提供关于冰盖和冰川融化如何影响全球海平面的关键数据。通过监测这些变化，科学家可以更好地预测未来情景，并向决策者提供必要措施的建议，以减轻气候变化的影响。总之，大地水准面高度图（geoidal height map）是理解地球形状和引力场的重要工具。它的应用范围从改善导航系统到研究环境变化和地质过程。随着技术的进步和更多数据的可用性，大地水准面高度图的准确性和实用性将继续增长，进一步增强我们对地球及其动态的理解。通过持续的研究和创新，我们可以利用这些地图的力量来应对当今人类面临的一些最紧迫的挑战。