magnetic declination

简明释义

磁偏角

英英释义

例句

1.Pilots must understand magnetic declination (磁偏角) to navigate accurately during flights.

飞行员必须理解magnetic declination (磁偏角) 以便在飞行中进行准确导航。

2.Geologists often take magnetic declination (磁偏角) into account when studying rock formations.

地质学家在研究岩石形成时，通常会考虑magnetic declination (磁偏角)。

3.When using a compass, it's important to account for magnetic declination (磁偏角) to ensure accurate navigation.

在使用指南针时，考虑到magnetic declination (磁偏角) 是确保导航准确的重要因素。

4.The magnetic declination (磁偏角) can vary significantly depending on your location on the Earth.

根据你在地球上的位置，magnetic declination (磁偏角) 可能会有显著变化。

5.Before heading out on a hike, check the local magnetic declination (磁偏角) to adjust your compass readings.

在出发徒步旅行之前，检查当地的magnetic declination (磁偏角) 以调整你的指南针读数。

作文

Understanding navigation is essential for many activities, from hiking in the wilderness to sailing across oceans. One crucial aspect of navigation that often gets overlooked is the concept of magnetic declination. This term refers to the angle between magnetic north, which is the direction a compass points, and true north, which is the direction along the Earth's surface towards the geographic North Pole. The difference between these two directions can significantly impact navigation accuracy. Therefore, grasping the idea of magnetic declination is vital for anyone who relies on a compass for navigation. The Earth’s magnetic field is not uniform; it varies from place to place due to the complex movements within the Earth’s molten outer core. As a result, magnetic declination can change based on geographical location. For instance, in some regions, the magnetic north may be several degrees east or west of true north, leading to potential errors if navigators do not account for this difference. To illustrate the importance of magnetic declination, consider a scenario where a hiker is using a map and compass to navigate through a dense forest. If the hiker fails to adjust for magnetic declination, they might find themselves off course, potentially leading to dangerous situations. This is particularly true in areas where the terrain is rugged and visibility is limited. Thus, understanding magnetic declination is not just an academic exercise; it is a practical necessity for safe navigation.Moreover, magnetic declination is not a fixed value; it changes over time due to the shifting nature of the Earth’s magnetic field. This means that navigators must stay informed about the current magnetic declination values for their specific locations, which can be found on various geological survey websites or navigation apps. In addition to outdoor navigation, magnetic declination also plays a role in aviation and maritime navigation. Pilots and ship captains must account for this deviation when plotting their courses to ensure they reach their destinations safely and efficiently. Failing to do so could result in significant deviations from the intended path, leading to delays or even accidents.In conclusion, magnetic declination is a fundamental concept in navigation that everyone who uses a compass should understand. It is the angle between magnetic north and true north, and it varies by location and over time. By being aware of magnetic declination and making the necessary adjustments, navigators can improve their accuracy and safety. Whether you are an experienced adventurer or a casual hiker, taking the time to learn about magnetic declination will enhance your navigation skills and help you reach your destination without unnecessary detours.

理解导航对于许多活动至关重要，从在荒野中徒步旅行到跨越海洋航行。一个常常被忽视的导航关键方面是磁偏角的概念。这个术语指的是磁北（即指南针指向的方向）与真北（即沿地球表面朝向地理北极的方向）之间的角度。这两个方向之间的差异可能会显著影响导航的准确性。因此，掌握磁偏角的概念对任何依赖指南针进行导航的人来说都是至关重要的。地球的磁场并不均匀；由于地球熔融外核内部的复杂运动，它在不同地方有所变化。因此，磁偏角会根据地理位置而变化。例如，在某些地区，磁北可能位于真北的东侧或西侧数度，如果导航员不考虑这一差异，就会导致潜在的错误。为了说明磁偏角的重要性，考虑一个场景：一名徒步旅行者正在使用地图和指南针在密林中导航。如果这名徒步旅行者未能调整磁偏角，他们可能会发现自己偏离了路线，可能导致危险的情况。尤其是在地形崎岖、能见度有限的地区，这一点尤为重要。因此，理解磁偏角不仅仅是一个学术练习；它是安全导航的实际必要条件。此外，磁偏角不是一个固定的值；由于地球磁场的不断变化，它会随着时间而变化。这意味着导航员必须随时了解特定位置的当前磁偏角值，这些信息可以在各种地质调查网站或导航应用程序上找到。除了户外导航，磁偏角在航空和海洋导航中也发挥着作用。飞行员和船长在规划航线时必须考虑这种偏差，以确保他们安全、高效地到达目的地。如果不这样做，可能会导致航线与预期路径的重大偏差，从而造成延误甚至事故。总之，磁偏角是每个使用指南针的人都应该理解的导航基本概念。它是磁北和真北之间的角度，并且因地点和时间而异。通过了解磁偏角并进行必要的调整，导航员可以提高他们的准确性和安全性。无论你是经验丰富的冒险者还是休闲徒步旅行者，花时间学习磁偏角将提升你的导航技能，帮助你顺利抵达目的地，而无需不必要的绕行。