hydrographic datum

简明释义

海道测量基线

英英释义

例句

1.In marine navigation, selecting the correct hydrographic datum is crucial for safety.

在海洋导航中，选择正确的水文基准对于安全至关重要。

2.The hydrographic datum helps in the creation of nautical charts.

水文基准有助于航海图的制作。

3.The surveyors used a specific hydrographic datum to ensure accurate depth measurements.

测量员使用了特定的水文基准以确保深度测量的准确性。

4.Researchers often compare data from different hydrographic datums to analyze changes in sea levels.

研究人员通常比较来自不同水文基准的数据，以分析海平面变化。

5.When conducting underwater surveys, it is essential to reference the appropriate hydrographic datum.

在进行水下调查时，引用适当的水文基准是必不可少的。

作文

In the realm of oceanography and maritime navigation, the term hydrographic datum plays a crucial role in ensuring accurate measurements and data collection. A hydrographic datum, or 水文基准, is a reference point used to measure the depth of water bodies and the elevation of land relative to sea level. This concept is essential for various applications, including nautical charting, coastal management, and environmental monitoring.Understanding the significance of a hydrographic datum requires an appreciation of how water levels can fluctuate due to tides, weather conditions, and other natural phenomena. Without a standardized reference, it would be nearly impossible to create reliable maps or conduct safe navigation. For instance, when ships navigate through channels, they rely on charts that are based on a specific hydrographic datum. These charts indicate the minimum depths of water at different points, which is critical for avoiding groundings and ensuring safe passage.There are several types of hydrographic datum used worldwide, with the most common being the Mean Sea Level (MSL) datum. MSL is determined by averaging the sea level over a significant period, accounting for variations caused by tides and atmospheric pressure. Other datums may be established based on local conditions or specific geographic areas, leading to variations in depth readings and elevations. Thus, understanding the local hydrographic datum is vital for mariners and coastal engineers alike.Additionally, the advent of technology has transformed how we utilize hydrographic datum. With the integration of satellite positioning systems and advanced sonar technology, hydrographers can collect data with unprecedented accuracy. These innovations allow for the continuous updating of nautical charts, ensuring that mariners have access to the most current information available.Moreover, the importance of a hydrographic datum extends beyond navigation. In environmental studies, researchers rely on accurate water level measurements to monitor changes in ecosystems, assess flood risks, and manage water resources. For example, a shift in the hydrographic datum could indicate rising sea levels, prompting further investigation into climate change impacts and necessary mitigation strategies.In conclusion, the concept of hydrographic datum is foundational to various fields related to water bodies. Its role in ensuring accurate navigation, environmental monitoring, and resource management cannot be overstated. As technology continues to evolve, the methods of establishing and utilizing hydrographic datum will also advance, further enhancing our understanding of the world's oceans and waterways. Therefore, a comprehensive grasp of hydrographic datum is essential for professionals in marine science, engineering, and related disciplines, as it underpins much of the work conducted in these areas.

在海洋学和航海导航领域，术语hydrographic datum（水文基准）在确保测量和数据收集的准确性方面发挥着至关重要的作用。hydrographic datum是一个参考点，用于测量水体的深度和相对于海平面的土地高度。这个概念对于航海制图、沿海管理和环境监测等各种应用至关重要。理解hydrographic datum的重要性需要认识到水位因潮汐、天气条件和其他自然现象而波动的情况。如果没有标准化的参考，几乎不可能创建可靠的地图或进行安全导航。例如，当船只在航道中航行时，它们依赖于基于特定hydrographic datum的图表。这些图表指示不同点的最低水深，这对于避免搁浅和确保安全通行至关重要。全球范围内使用几种类型的hydrographic datum，最常见的是平均海平面（MSL）基准。MSL是通过对一段时间内的海平面进行平均得出的，考虑了潮汐和大气压力造成的变化。其他基准可能基于当地条件或特定地理区域建立，导致深度读数和高程的变化。因此，了解当地的hydrographic datum对于航海者和沿海工程师来说至关重要。此外，科技的发展改变了我们利用hydrographic datum的方式。随着卫星定位系统和先进声纳技术的结合，水文测量师可以以前所未有的准确性收集数据。这些创新使得航海图的持续更新成为可能，确保航海者获得最新的信息。此外，hydrographic datum的重要性超越了导航。在环境研究中，研究人员依赖准确的水位测量来监测生态系统变化、评估洪水风险和管理水资源。例如，hydrographic datum的变化可能表明海平面上升，促使进一步调查气候变化的影响和必要的缓解策略。总之，hydrographic datum的概念是与水体相关的各个领域的基础。它在确保准确导航、环境监测和资源管理中的作用不容小觑。随着科技的不断发展，建立和利用hydrographic datum的方法也将不断进步，进一步增强我们对世界海洋和水道的理解。因此，全面掌握hydrographic datum对海洋科学、工程及相关学科的专业人士至关重要，因为它支撑着这些领域的大部分工作。