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The topographic elevation of a summit measures the height of the summit above a geodetic sea level. [ b ] The first table below ranks the 100 highest major summits of Alaska by elevation. The topographic prominence of a summit is a measure of how high the summit rises above its surroundings.
The United States Geological Survey (USGS) historical topographic maps, some more than 65 years old, are useful to a glaciologist in determining glacier change. These maps were provided by the United States Geological Survey (USGS) [ 1 ] and archived to Wikimedia Commons .
TopoZone was one of the first topographic mapping site on the web, providing visitors with free viewing and printing of the full set of United States Geological Survey topographic maps covering the entire United States. The maps are produced by the USGS, which encourages the distribution of their maps through business partners.
Online collection of all digital USGS 1:24K scale topographic maps (as well as various other GIS data) covering the United States, available as a free download. NPScape United States Department of the Interior National Park Service NPScape is a landscape dynamics monitoring project that provides landscape-level data, tools, and evaluations for ...
In addition to matching the Topozone URL's, the website offers free download of GeoTIFFs, which Topozone had only offered for a premium. TopoQuest started adding Canadian 1:50K scale topographic maps in July 2008, and USGS 1:100K and 1:250K scale topographic maps in March 2009.
The topographic isolation (or radius of dominance) of a summit measures how far the summit lies from its nearest point of equal elevation. [6] Denali is one of only three summits on Earth with more than 6000 kilometers (3728 miles) of topographic isolation. Four major summits of greater North America exceed 2000 kilometers (1243 miles), eight ...
Denali in Alaska is the highest mountain peak of the United States and North America.Denali is the third most topographically prominent and third most topographically isolated summit on Earth after Mount Everest and Aconcagua.
The 209 most topographically isolated summits of the United States with at least 500 meters of topographic prominence [6] Rank Mountain Peak State or territory Mountain Range Elevation Prominence Isolation Location; 1 Denali [7] [8] [b] Alaska: Alaska Range: 20,310 ft 6190.5 m: 20,146 ft 6141 m: 4,629.37 mi 7,450.24 km