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2. Topographic map - Wikipedia

   en.wikipedia.org/wiki/Topographic_map

   In modern mapping, a topographic map or topographic sheet is a type of map characterized by large- scale detail and quantitative representation of relief features, usually using contour lines (connecting points of equal elevation), but historically using a variety of methods. Traditional definitions require a topographic map to show both ...

3. National Geodetic Vertical Datum of 1929 - Wikipedia

   en.wikipedia.org/wiki/National_Geodetic_Vertical...

   The National Geodetic Vertical Datum of 1929 is the official name since 1973 [1] of the vertical datum established for vertical control surveying in the United States of America by the General Adjustment of 1929. Originally known as Sea Level Datum of 1929, NGVD 29 was determined and published by the United States Coast and Geodetic Survey [2 ...

4. Terrain cartography - Wikipedia

   en.wikipedia.org/wiki/Terrain_cartography

   Terrain cartography. USGS topographic map of Stowe, Vermont with contour lines at 20-foot intervals. Terrain cartography or relief mapping is the depiction of the shape of the surface of the Earth on a map, using one or more of several techniques that have been developed. Terrain or relief is an essential aspect of physical geography, and as ...

5. Digital elevation model - Wikipedia

   en.wikipedia.org/wiki/Digital_elevation_model

   A digital elevation model (DEM) or digital surface model (DSM) is a 3D computer graphics representation of elevation data to represent terrain or overlaying objects, commonly of a planet, moon, or asteroid. A "global DEM" refers to a discrete global grid. DEMs are used often in geographic information systems (GIS), and are the most common basis ...

6. File:Florida topographic map-en.svg - Wikipedia

   en.wikipedia.org/wiki/File:Florida_topographic...

   Original file ‎ (SVG file, nominally 2,890 × 2,810 pixels, file size: 2.51 MB) Wikimedia Commons Commons is a freely licensed media file repository. . This is a featured picture on Wikimedia Commons ( Featured pictures) and is considered one of the finest images. See its nomination here.

7. AOL Mail

   mail.aol.com

   Get AOL Mail for FREE! Manage your email like never before with travel, photo & document views. Personalize your inbox with themes & tabs. You've Got Mail!

8. Pikes Peak - Wikipedia

   en.wikipedia.org/wiki/Pikes_Peak

   The summit of Pikes Peak has a polar climate due to its elevation. Snow is a possibility any time year-round, and thunderstorms with high winds gusting up to 100 miles per hour (160 km/h) or more are common in the afternoons. [33] [34] Surrounding areas have different climatic variations depending on location and elevation.

9. Topographic prominence - Wikipedia

   en.wikipedia.org/wiki/Topographic_prominence

   Topographic prominence. In topography, prominence or relative height (also referred to as autonomous height, and shoulder drop in US English, and drop in British English) measures the height of a mountain or hill's summit relative to the lowest contour line encircling it but containing no higher summit within it.