mean lower low water

简明释义

平均低低潮

英英释义

例句

1.Coastal engineers often use mean lower low water as a reference point for construction projects.

沿海工程师常常使用平均低潮水位作为建设项目的参考点。

2.The navigation charts indicate the depth at mean lower low water to ensure safe passage for vessels.

航海图显示在平均低潮水位下的深度，以确保船只安全通行。

3.The mean lower low water mark is essential for determining tidal ranges in coastal studies.

平均低潮水位标记对于确定沿海研究中的潮汐范围至关重要。

4.When planning a marina, it is crucial to consider the mean lower low water level to avoid grounding.

在规划码头时，考虑平均低潮水位至关重要，以避免搁浅。

5.Fishermen often check the mean lower low water times to plan their fishing trips effectively.

渔民们常常查看平均低潮水位时间，以有效规划他们的捕鱼之旅。

作文

Understanding the concept of mean lower low water is essential for various fields such as marine navigation, coastal engineering, and environmental science. The term refers to the average level of the lowest tide recorded at a specific location over a designated period. It serves as a crucial reference point for measuring water levels and understanding tidal patterns. In this essay, we will explore the significance of mean lower low water in different contexts, its calculation methods, and its implications for coastal management.Firstly, let us delve into the importance of mean lower low water in marine navigation. For sailors and maritime professionals, knowing the tidal levels is vital for safe navigation. The mean lower low water provides a baseline that helps in determining the depth of water in harbors and channels. If a vessel's draft exceeds the water depth at low tide, it risks running aground. Therefore, understanding mean lower low water allows mariners to plan their routes effectively, ensuring safe passage during low tide conditions.Secondly, in coastal engineering, mean lower low water plays a significant role in designing structures such as piers, jetties, and seawalls. Engineers must consider this measurement when assessing the potential impact of tides on infrastructure. For example, if a seawall is built too close to the waterline without accounting for mean lower low water, it may not provide adequate protection against storm surges or high tides. Thus, integrating mean lower low water data into engineering designs is crucial for ensuring the longevity and safety of coastal structures.Moreover, mean lower low water is also relevant in environmental science, particularly in studying coastal ecosystems. Many habitats, such as salt marshes and tidal flats, are influenced by tidal fluctuations. By understanding the patterns of mean lower low water, researchers can assess the health of these ecosystems and monitor changes over time. For instance, if sea levels rise due to climate change, the mean lower low water level may shift, impacting the flora and fauna that depend on specific tidal conditions. This knowledge is vital for conservation efforts and managing the effects of climate change on coastal environments.Calculating mean lower low water involves collecting tidal data over a significant period, typically 19 years, to account for variations in tidal patterns. Once the data is gathered, the lowest tide for each tidal day is recorded, and the average of these values is computed. This method ensures that the calculated mean lower low water reflects long-term trends rather than short-term anomalies, providing a reliable reference for various applications.In conclusion, the concept of mean lower low water is integral to multiple disciplines, including marine navigation, coastal engineering, and environmental science. Its significance lies in providing a standardized reference for tidal measurements, which aids in safe navigation, effective engineering design, and ecological research. As we continue to face challenges related to climate change and rising sea levels, understanding and utilizing mean lower low water will be increasingly important for sustainable coastal management and protecting our marine environments.

理解平均低潮水位的概念对于海洋导航、沿海工程和环境科学等多个领域至关重要。该术语指的是在特定地点在指定时间段内记录的最低潮位的平均水平。它作为测量水位和理解潮汐模式的重要参考点。在这篇文章中，我们将探讨平均低潮水位在不同背景下的重要性、计算方法及其对沿海管理的影响。首先，让我们深入了解平均低潮水位在海洋导航中的重要性。对于航海者和海事专业人员来说，了解潮位是安全航行的关键。平均低潮水位提供了一个基准，有助于确定港口和航道的水深。如果船只的吃水深度超过低潮时的水深，就有搁浅的风险。因此，了解平均低潮水位使航海者能够有效规划航线，确保在低潮条件下安全通行。其次，在沿海工程中，平均低潮水位在设计码头、堤坝和海堤等结构时起着重要作用。工程师在评估潮汐对基础设施潜在影响时，必须考虑这一测量值。例如，如果海堤建得离水线太近，而没有考虑到平均低潮水位，可能无法提供足够的保护，以抵御风暴潮或高潮。因此，将平均低潮水位数据纳入工程设计对于确保沿海结构的持久性和安全性至关重要。此外，平均低潮水位在环境科学中也具有相关性，特别是在研究沿海生态系统方面。许多栖息地，例如盐沼和潮间带，受潮汐波动的影响。通过了解平均低潮水位的模式，研究人员可以评估这些生态系统的健康状况，并监测随时间变化的情况。例如，如果由于气候变化导致海平面上升，平均低潮水位水平可能会发生变化，从而影响依赖特定潮汐条件的植物和动物。这一知识对于保护工作和管理气候变化对沿海环境影响至关重要。计算平均低潮水位涉及在较长时间段（通常为19年）内收集潮汐数据，以考虑潮汐模式的变化。一旦数据收集完成，就记录每个潮汐日的最低潮位，并计算这些值的平均值。这种方法确保计算出的平均低潮水位反映长期趋势，而不是短期异常，为各种应用提供可靠的参考。总之，平均低潮水位的概念对于多个学科至关重要，包括海洋导航、沿海工程和环境科学。它的重要性在于提供标准化的潮汐测量参考，这有助于安全航行、有效的工程设计和生态研究。随着我们继续面临与气候变化和海平面上升相关的挑战，理解和利用平均低潮水位在可持续的沿海管理和保护我们的海洋环境方面将变得越来越重要。