Topographic Profile
Topographic Profile - Related Videos
07:13
Using Topographic Maps to Generate Topographic Profiles
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2023
Source: Laboratory of Alan Lester - University of Colorado Boulder Topographic maps are "plan-view" representations of Earth's three-dimensional surface. They are a standard type of map-view that provides an overhead, or aerial, perspective. Among the defining features of a topographic map are the contour lines that indicate locations of constant elevation. The elevation interval between the contour lines is dependent on the level of detail provided by the map and the kind of topography present.
01:29
Topographic Surveying and Contours
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2025
Topographic surveying is critical for documenting the Earth's surface, focusing on capturing elevations, slopes, and natural and man-made features. It is essential in construction planning, water resource management, and land-use analysis. The primary outcome of such surveys is a topographic map, which uses contour lines to visually represent the shape and slope of the terrain, providing valuable insights into the landscape's characteristics.Contour lines are fundamental to understanding the...
01:29
Plotting of Topographic Maps
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2025
Topographic maps represent the Earth's surface features using contour lines, which connect points of equal elevation to create a two-dimensional representation of three-dimensional terrain. Creating a topographic map requires a systematic approach.Begin by plotting a scaled grid and marking intersections corresponding to the survey's elevation data points. Assign elevation values at these intersections to build the base map. Next, determine contour levels using a consistent contour interval,...
08:29
Expression Profiling with Microarrays
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2023
Microarrays are important tools for profiling gene expression, and are based on complementary binding between probes that are attached to glass chips and nucleic acids derived from samples. Using these arrays, scientists can simultaneously evaluate the expression of thousands of genes. In addition, the expression profiles of different cells or tissue types can be compared, allowing researchers to deduce how the expression of different genes change during biological processes, and thus gain...
06:02
Topographical Estimation of Visual Population Receptive Fields by fMRI
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Cited by 3 •
2015
It is important to obtain unbiased estimates of visual population receptive fields (pRFs) by functional magnetic resonance imaging. We use mild regularization constraints to estimate pRF topography without a-priori assumptions about pRF shape, allowing us to choose specific pRF models post-hoc. This is particularly advantageous in subjects with visual-pathway lesions.
FAQs
Each contour-line intersection becomes a plotted elevation point at its corresponding horizontal distance. Connecting these points in sequence preserves the order of rises and falls along the transect. The resulting shape reveals relief as a continuous pattern rather than as isolated map symbols, making changes in terrain easier to compare.
The vertical scale controls how strongly elevation changes appear in relation to horizontal distance. A selected scale can emphasize subtle slopes that might otherwise look nearly flat, while a different scale changes the visual impression of relief. Interpreters should therefore consider the scale when comparing slope form or terrain changes.
A profile organizes elevation changes along a chosen transect, helping users recognize how the land rises and falls across a landscape. Those changes provide context for interpreting watershed form and likely drainage pathways. In environmental studies, this terrain perspective complements map information when examining how surface structure influences water movement.
Begin by selecting a transect across the area of interest, then mark where that line intersects contour lines. Transfer each intersection to a graph at its matching horizontal distance and elevation, and connect the plotted points. Choosing a vertical scale that reveals subtle changes can make the finished profile more informative.
Profiles support analysis of watershed form, drainage pathways, slope stability, soil erosion risk, and habitat patterns. By showing the sequence of elevation changes along a transect, they help relate terrain structure to environmental conditions. This makes them useful for organizing landscape observations before comparing sites or evaluating planning considerations.
A profile converts complex topographic map information into an accessible view of terrain structure. Researchers can use that view to compare how landscapes rise, fall, and differ in relief, while planners can examine terrain characteristics relevant to a proposed site. The approach supports clearer interpretation of landform patterns without relying on map symbols alone.