What Is A Topographic Map Definition
That covers a quadrangle that measures 7 5 minutes of longitude and latitude on all sides so these are also referred to as 7 5 minute maps quadrangle maps or quad maps modern topographic maps for alaska have a scale of 1 25 000 and cover a variable distance of longitude.
What is a topographic map definition. The phrase usgs topographic map can refer to maps with a wide range of scales but the scale used for all modern usgs topographic maps is 1 24 000. Topographic maps show contours elevation forest cover marsh pipelines power transmission lines buildings and various types of boundary lines such as international provincial and administrative and many others. Furthermore these geographical features can be mountains valleys plain surfaces water bodies and many more. In order for topographic maps to be relevant and useful the maps must have sufficient information on its size.
Topographic map definition is a map intermediate between a general map and a plan on a scale large enough to show roads plans of towns and contour lines. It is important to note that a map is merely a two or three dimensional representation of the physical environment at a given time. Both types of maps show roads water features cities and parks but that s where the similarity ends. Apart from contour lines colors labels and symbols are also used to portray the shapes and location of the geographical features.
Topographic maps refer to a graphical representation of the three dimensional. Topographic map definition a map showing topographic features usually by means of contour lines. A topographic map is a specific type of map that shows the elevations of ground features. The size of the map is derived.
All the components of topographic maps carry equal importance. They are different from other maps in that they show both vertical and horizontal positions of the terrain. Topographic maps refer to maps at large and medium scales that incorporate a massive variety of information. In modern mapping a topographic map or topographic chart is a type of map characterized by large scale detail and quantitative representation of relief usually using contour lines connecting points of equal elevation but historically using a variety of methods.
Changes to the landscape and cultural features regularly occur such as roads vegetation and buildings resulting in maps becoming dated although the rate of. Therefore a map will never be entirely up to date. A topographic map is a map that represents the locations of geographical features. Topographic maps usually show a geographic graticule and a coordinate grid so you can determine relative and absolute positions of mapped features.
Is a topographic map similar to a road map. Features of the map. Topography is a field of geoscience and planetary science and is concerned with local detail in general including not only relief but also natural and artificial features and even local history and culture this meaning is less common in the united states where topographic maps with. Definition and meaning of topographic map.
Each topographic map has a unique name. A topographic survey is typically based upon systematic observation and published as a map series made up of two or more map sheets. Traditional definitions require a topographic map to show both natural and artificial features. Topographic maps are two dimensional maps that represent three dimensional earth surface.