authalic conical projection

简明释义

等积圆锥投影;

英英释义

例句

1.In cartography, the choice of an authalic conical projection can greatly affect the interpretation of spatial data.

在制图学中，选择等面积圆锥投影会极大影响空间数据的解读。

2.The map uses an authalic conical projection to accurately represent the size of countries.

这张地图使用了等面积圆锥投影来准确表示各国的面积。

3.Geographers rely on the authalic conical projection for its ability to minimize distortion in mid-latitude regions.

地理学家依赖于等面积圆锥投影，因为它能够在中纬度地区最小化变形。

4.The authalic conical projection is particularly useful for mapping large landmasses like continents.

对于绘制大型陆地如大陆，等面积圆锥投影特别有用。

5.When creating thematic maps, an authalic conical projection is often preferred for its area preservation.

在制作专题地图时，通常优先选择等面积圆锥投影，因为它能保持面积的准确性。

作文

In the field of cartography, various map projections serve as essential tools for representing the three-dimensional Earth on a two-dimensional plane. One such projection is the authalic conical projection, which strikes a balance between preserving area and shape. This projection is particularly useful for mapping regions with a larger east-west extent, as it minimizes distortion along certain parallels. The term 'authalic' refers to the projection's ability to maintain equal area properties, ensuring that areas on the map are proportional to their corresponding areas on the Earth's surface. This characteristic makes the authalic conical projection ideal for thematic maps, where accurate representation of area is crucial for interpreting data such as population density or land use.The authalic conical projection is constructed using one or two standard parallels, which are lines of latitude where the scale is true. Between these parallels, the projection maintains area accuracy, while distortion increases outside this range. This feature allows cartographers to select standard parallels that best fit the region of interest, thus optimizing the map's utility. For instance, when mapping the United States, a cartographer might choose standard parallels that align closely with the country’s latitudinal extent, resulting in a more precise representation of its geography.Moreover, the authalic conical projection can be adapted to different regions by altering the central meridian and the standard parallels, making it versatile for various applications. This adaptability is beneficial for regional studies, where specific geographic features need to be highlighted without compromising area integrity. Additionally, the conical nature of this projection allows for a visually appealing representation of mountainous terrains, as it can effectively convey elevation changes and other topographical details.However, like any projection, the authalic conical projection has its limitations. While it excels in preserving area, it may not maintain shape accurately, especially at the edges of the map. This distortion can lead to misconceptions about the true form of geographical features, which is a critical consideration for navigational purposes. Therefore, cartographers must weigh the advantages of area preservation against potential shape distortion when choosing this projection for specific projects.In conclusion, the authalic conical projection is a valuable tool in the cartographer's arsenal, providing a means to represent the Earth's surface with an emphasis on area accuracy. Its flexibility and effectiveness in visualizing large regions make it especially popular for thematic maps. As technology advances and mapping techniques evolve, understanding traditional projections like the authalic conical projection remains vital for both professionals and enthusiasts in the field of geography. By appreciating the nuances of this projection, we can better interpret the world around us and make informed decisions based on the spatial data presented in maps.

在制图领域，各种地图投影是将三维地球表示为二维平面的重要工具。其中一种投影是等面积圆锥投影，它在保持面积和形状之间取得了平衡。这种投影特别适用于映射东西跨度较大的区域，因为它可以最小化某些纬线上的失真。术语“等面积”指的是该投影能够保持等面积特性，确保地图上的面积与地球表面上对应的面积成比例。这一特性使得等面积圆锥投影非常适合主题地图，其中准确表示面积对于解释人口密度或土地利用等数据至关重要。等面积圆锥投影是使用一个或两个标准纬线构建的，这些纬线是尺度真实的纬线。在这些纬线之间，投影保持面积的准确性，而在这个范围之外失真增加。这一特性使得制图师可以选择最适合感兴趣区域的标准纬线，从而优化地图的实用性。例如，在映射美国时，制图师可能会选择与该国纬度范围紧密对齐的标准纬线，从而获得其地理特征的更精确表示。此外，等面积圆锥投影可以通过改变中央子午线和标准纬线来适应不同的区域，使其在各种应用中具有灵活性。这种适应性对于区域研究非常有利，因为需要突出特定地理特征而不损害面积的完整性。此外，这种投影的圆锥形状使其能够有效传达海拔变化和其他地形细节，因此在表现山区地形时具有吸引力。然而，像任何投影一样，等面积圆锥投影也有其局限性。尽管它在保持面积方面表现出色，但在地图边缘的形状可能不会准确保持。这种失真可能导致人们对地理特征的真实形态产生误解，这对于导航目的来说是一个关键考虑因素。因此，制图师在选择此投影进行特定项目时，必须权衡面积保持的优势与潜在的形状失真。总之，等面积圆锥投影是制图师工具箱中的一项宝贵工具，提供了一种强调面积准确性的方式来表示地球表面。它在可视化大区域方面的灵活性和有效性使其特别受欢迎于主题地图。随着技术的进步和制图技术的发展，理解像等面积圆锥投影这样的传统投影仍然对地理领域的专业人士和爱好者至关重要。通过欣赏这种投影的细微差别，我们可以更好地解释周围的世界，并根据地图中呈现的空间数据做出明智的决策。