mean sea level

简明释义

平均海平面

英英释义

例句

1.Airports often refer to mean sea level when determining runway elevations.

机场在确定跑道高度时常常参考平均海平面。

2.Coastal cities often use mean sea level as a reference point for flood risk assessments.

沿海城市通常以平均海平面作为洪水风险评估的参考点。

3.The surveyor calculated the land's height in relation to mean sea level.

测量员根据平均海平面计算了土地的高度。

4.The elevation of the mountain is measured at 2,000 meters above mean sea level.

这座山的海拔高度为2000米，以上述平均海平面为基准。

5.Tides can cause significant variations above and below mean sea level.

潮汐会导致水位在平均海平面之上和之下发生显著变化。

作文

Understanding the concept of mean sea level is essential for various fields, including geography, oceanography, and environmental science. The term mean sea level refers to the average height of the ocean's surface, measured over a specific period, typically 19 years. This measurement serves as a baseline for determining elevation and depth in various geographical contexts. For instance, when assessing the elevation of land, it is crucial to reference the mean sea level to accurately gauge how high or low a particular area is compared to the ocean's surface.The significance of mean sea level extends beyond mere measurements; it plays a pivotal role in understanding climate change and its impact on coastal regions. As global temperatures rise, polar ice caps melt, and thermal expansion occurs, sea levels are projected to rise. This phenomenon can lead to devastating effects on coastal communities, including increased flooding, loss of habitat, and economic repercussions. By monitoring changes in mean sea level, scientists can better predict these impacts and help communities prepare for future challenges.In addition to its relevance in climate science, mean sea level is also vital for navigation and maritime activities. Ships and vessels rely on accurate depth measurements to safely traverse oceans and seas. If mean sea level rises, it alters the navigable depths of waterways, potentially leading to hazardous conditions. Therefore, understanding the fluctuations in mean sea level is crucial for ensuring safe passage and efficient shipping routes.Furthermore, the concept of mean sea level is integral to the establishment of benchmarks used in construction and civil engineering. When constructing buildings, bridges, and other infrastructures, engineers must consider the mean sea level to ensure that their projects are built at appropriate elevations. This consideration helps prevent future issues related to flooding and structural integrity, particularly in areas prone to severe weather events.Moreover, the study of mean sea level involves complex scientific methodologies. Researchers utilize tide gauges and satellite altimetry to measure sea levels accurately. Tide gauges provide long-term data by recording the height of the sea at specific locations, while satellite altimetry allows for broader coverage and more extensive data collection across the globe. These methods contribute to a comprehensive understanding of how sea levels are changing over time.In conclusion, the concept of mean sea level is multifaceted, influencing various domains such as environmental science, engineering, and navigation. Its implications are far-reaching, affecting not only our understanding of climate change but also the safety and functionality of human infrastructure. As we continue to face the challenges posed by rising sea levels, the importance of accurately measuring and interpreting mean sea level cannot be overstated. By doing so, we can better prepare for the future and mitigate the impacts of environmental changes on our world.

理解平均海平面的概念对地理学、海洋学和环境科学等多个领域至关重要。术语平均海平面是指在特定时期内（通常为19年）测量的海洋表面的平均高度。该测量值作为确定各种地理背景中海拔和深度的基准。例如，在评估土地的海拔时，参考平均海平面对于准确判断特定区域相对于海洋表面的高低至关重要。平均海平面的重要性超越了简单的测量，它在理解气候变化及其对沿海地区影响方面发挥着关键作用。随着全球温度上升，极地冰盖融化，热膨胀发生，海平面预计将上升。这一现象可能对沿海社区造成毁灭性影响，包括洪水增加、栖息地丧失和经济后果。通过监测平均海平面的变化，科学家可以更好地预测这些影响，并帮助社区为未来的挑战做好准备。除了在气候科学中的相关性外，平均海平面对于导航和海事活动也至关重要。船只和舰艇依赖准确的深度测量来安全地穿越海洋和海域。如果平均海平面上升，将改变水道的可航行深度，可能导致危险条件。因此，了解平均海平面的波动对确保安全通行和高效航运路线至关重要。此外，平均海平面的概念对建立用于建筑和土木工程的基准也至关重要。在建造建筑物、桥梁和其他基础设施时，工程师必须考虑平均海平面，以确保他们的项目建造在适当的海拔上。这种考虑有助于防止未来与洪水和结构完整性相关的问题，特别是在容易受到严重天气事件影响的地区。此外，研究平均海平面涉及复杂的科学方法论。研究人员利用潮位计和卫星高度计来准确测量海平面。潮位计通过记录特定地点的海水高度提供长期数据，而卫星高度计则允许更广泛的覆盖范围和更广泛的数据收集。这些方法有助于全面了解海平面随时间变化的情况。总之，平均海平面的概念是多方面的，影响着环境科学、工程和导航等多个领域。它的影响深远，不仅影响我们对气候变化的理解，还影响人类基础设施的安全性和功能性。随着我们继续面临海平面上升带来的挑战，准确测量和解读平均海平面的重要性不容小觑。通过这样做，我们可以更好地为未来做好准备，并减轻环境变化对我们世界的影响。