Search results
Results From The WOW.Com Content Network
In 2015, the USGS unveiled the topoView website, a new way to view their entire digitized collection of over 178,000 maps from 1884 to 2006. The site is an interactive map of the United States that allows users to search or move around the map to find the USGS collection of maps for a specific area.
The site is one of three internet services used by Wikipedia for providing topographic maps. It arose to prominence in May 2008 after TopoZone through its new trails.com owners required payment for access to its maps. TopoQuest map links are the same as Topozone's except for the difference in the domain. It is operated by Ryan Niemi in Klamath ...
The National Map is a collaborative effort of the United States Geological Survey (USGS) and other federal, state, and local agencies to improve and deliver topographic information for the United States. [1] The purpose of the effort is to provide "...a seamless, continuously maintained set of public domain geographic base information that will ...
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 ...
The U.S. Geological Survey Library has become one of the largest geoscience libraries in the world. Materials within the library system include books and maps dating back to the 16th and 17th centuries, as well as a nearly complete set of the various State Geological Survey publications. U.S. Geological Survey Library Classification System
A contour line (also isoline, isopleth, isoquant or isarithm) of a function of two variables is a curve along which the function has a constant value, so that the curve joins points of equal value. [1] [2] It is a plane section of the three-dimensional graph of the function parallel to the -plane. More generally, a contour line for a function ...
File:NGMDB USGS topoView, Cucamonga Junction, AZ, residences and quarries.jpg. Size of this preview: 800 × 579 pixels. Other resolutions: 320 × 232 pixels | 640 × 463 pixels | 1,024 × 741 pixels | 1,145 × 829 pixels. Original file (1,145 × 829 pixels, file size: 251 KB, MIME type: image/jpeg) This is a file from the Wikimedia Commons ...
The Juneau Icefield is a geological icefield located just north and east of Juneau, Alaska and continues north to the Skagway, Alaska area. Current research of Climate Change in the field of Glaciology relies upon comparison of historical glacier mass-balance to current conditions. The United States Geological Survey (USGS) historical ...