mean lower low water

简明释义

平均低低潮面

英英释义

例句

1.The tidal range is measured from the mean lower low water to the mean high water mark.

潮差是从平均低潮水位到平均高潮水位的测量。

2.When planning coastal construction, engineers must consider the mean lower low water to ensure stability.

在规划沿海建筑时，工程师必须考虑平均低潮水位以确保稳定性。

3.The charts indicate that the mean lower low water is at 1.5 meters.

图表显示平均低潮水位为1.5米。

4.The marina is built above the mean lower low water level to prevent flooding during high tides.

这个码头建在平均低潮水位之上，以防止在高潮期间淹水。

5.Boaters should be aware of the mean lower low water to avoid running aground.

船主应注意平均低潮水位以避免搁浅。

作文

Understanding the concept of mean lower low water is crucial for various fields, including maritime navigation, coastal engineering, and environmental studies. The term refers to the average level of the lowest tide recorded over a specific period, usually 19 years. This measurement is essential for determining safe navigation depths in harbors and channels, as well as for assessing coastal erosion and habitat changes. In this essay, I will explore the significance of mean lower low water and its applications in real-world scenarios.To begin with, the definition of mean lower low water can be broken down into its components. "Mean" indicates an average, while "lower low water" refers to the lowest point reached by the tide during its cycle. By averaging these low points over a designated time frame, we obtain a reliable reference point for water levels. This is particularly important because tidal patterns can vary significantly based on geographical location, weather conditions, and seasonal changes.One of the primary applications of mean lower low water is in maritime navigation. Ships and vessels must operate within certain depth limits to avoid grounding or damage. Navigational charts often use mean lower low water as a baseline to indicate safe passage depths. For instance, if a chart shows that a channel has a depth of 10 feet at mean lower low water, mariners can be assured that they will have sufficient clearance during low tide, provided that the vessel's draft is less than this measurement.In addition to navigation, mean lower low water plays a vital role in coastal engineering. Engineers and planners utilize this measurement to design structures such as seawalls, jetties, and docks. By understanding the average low water mark, they can ensure that these structures are built to withstand the forces of nature, including wave action and erosion. Furthermore, when assessing the impact of sea-level rise due to climate change, mean lower low water serves as a critical benchmark. It helps scientists and policymakers evaluate how rising tides may affect coastal communities and ecosystems.Another important aspect of mean lower low water is its relevance in environmental studies. Coastal habitats, such as wetlands and estuaries, are often influenced by tidal fluctuations. By monitoring changes in the mean lower low water level, researchers can gain insights into habitat health and biodiversity. For example, if the mean lower low water level rises over time, it may indicate that a habitat is becoming inundated, potentially threatening species that rely on specific tidal ranges for their survival.In conclusion, the term mean lower low water encompasses more than just a technical definition; it represents a crucial element in understanding our interactions with marine environments. From ensuring safe navigation to guiding coastal development and informing environmental conservation efforts, the implications of mean lower low water are far-reaching. As we continue to face challenges related to climate change and human activity, grasping the significance of this measurement will be essential for sustainable management of our coastlines and waterways.

理解平均最低低水位的概念对海事导航、沿海工程和环境研究等多个领域至关重要。该术语指的是在特定时间段内（通常为19年）记录的最低潮位的平均水平。这一测量对于确定港口和航道的安全航行深度以及评估沿海侵蚀和栖息地变化至关重要。在本文中，我将探讨平均最低低水位的重要性及其在现实场景中的应用。首先，平均最低低水位的定义可以分解为它的组成部分。“平均”表示一个平均值，而“最低低水位”则指在潮汐周期中达到的最低点。通过在指定的时间范围内对这些低点进行平均，我们可以获得一个可靠的水位参考点。这一点尤其重要，因为潮汐模式可能会因地理位置、天气条件和季节变化而显著不同。平均最低低水位的主要应用之一是在海事导航中。船只和舰艇必须在某些深度限制内操作，以避免搁浅或损坏。航行图通常使用平均最低低水位作为基准，以指示安全通行的深度。例如，如果一幅图表显示在平均最低低水位下某条航道的深度为10英尺，航海者可以放心地认为，在低潮期间，只要船只的吃水深度低于这一测量值，就会有足够的净空。除了导航，平均最低低水位在沿海工程中也发挥着至关重要的作用。工程师和规划者利用这一测量来设计防波堤、码头和船坞等结构。通过了解平均低水位，他们可以确保这些结构能够承受自然力量，包括波浪冲击和侵蚀。此外，在评估由于气候变化导致的海平面上升影响时，平均最低低水位作为一个关键基准，帮助科学家和决策者评估海平面上升可能对沿海社区和生态系统造成的影响。平均最低低水位的另一个重要方面是其在环境研究中的相关性。沿海栖息地，如湿地和河口，往往受到潮汐波动的影响。通过监测平均最低低水位水平的变化，研究人员可以深入了解栖息地健康和生物多样性。例如，如果平均最低低水位水平随着时间的推移而上升，这可能表明某个栖息地正变得被淹没，从而可能威胁到依赖特定潮汐范围生存的物种。总之，术语平均最低低水位不仅仅是一个技术定义；它代表了理解我们与海洋环境互动的重要元素。从确保安全航行到指导沿海开发，再到告知环境保护工作，平均最低低水位的影响深远。随着我们继续面临与气候变化和人类活动相关的挑战，掌握这一测量的重要性将对可持续管理我们的海岸线和水道至关重要。