File:Frozenground.gif

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Summary

English: Distributions of permafrost in the Northern Hemisphere.

purple region : permafrost
blue regions : seasonally frozen ground (the soil is frozen for 15 days or more per year )
pink regions : intermittently frozen ground ( the soil is frozen for fewer than 15 days per year )
solid line : the average maximum extent of the seasonal snow cover

Русский: Районы вечной мерзлоты северного полушария.

Фиолетовый: регионы вечной мерзлоты;
Синий: регионы, где почва замерзает более, чем на 15 суток в году;
Розовый: регионы, где почва замерзает менее, чем на 15 суток в году;
Сплошная линия: граница области, где зимой выпадает снег.

日本語: 北半球での凍土の分布。

紫：永久凍土
青：季節的凍土（土壌の凍結が年間15日以上の地域）
ピンク：季節的凍土（土壌の凍結が年間15日以下の地域）
黒線：積雪地域南限（平均）

Licensing

The original public domain NASA picture modified by me (-map legend, black background > white, smaller size).

	This file is in the public domain in the United States because it was solely created by NASA. NASA copyright policy states that "NASA material is not protected by copyright unless noted". (See Template:PD-USGov, NASA copyright policy page or JPL Image Use Policy.)
	Warnings: Use of NASA logos, insignia and emblems is restricted per U.S. law 14 CFR 1221. The NASA website hosts a large number of images from the Soviet/Russian space agency, and other non-American space agencies. These are not necessarily in the public domain. Materials based on Hubble Space Telescope data may be copyrighted if they are not explicitly produced by the STScI.[1] See also {{PD-Hubble}} and {{Cc-Hubble}}. The SOHO (ESA & NASA) joint project implies that all materials created by its probe are copyrighted and require permission for commercial non-educational use. [2] Images featured on the Astronomy Picture of the Day (APOD) web site may be copyrighted. [3] The National Space Science Data Center (NSSDC) site has been known to host copyrighted content. Its photo gallery FAQ states that all of the images in the photo gallery are in the public domain "Unless otherwise noted."

This map of the world image could be re-created using vector graphics as an SVG file. This has several advantages; see Commons:Media for cleanup for more information. If an SVG form of this image is available, please upload it and afterwards replace this template with {{vector version available|new image name}}.

It is recommended to name the SVG file “Frozenground.svg”—then the template Vector version available (or Vva) does not need the new image name parameter.

File history

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	Date/Time	Dimensions	User	Comment
current	12:02, 19 June 2016	352 × 350 (34 KB)	SteinsplitterBot	Bot: Image rotated by 270°
	18:10, 3 July 2005	350 × 352 (33 KB)	Adam~commonswiki	Distributions of permafrost in the Northern Hemispher. purple region : permafrost blue regions : seasonally frozen ground (the soil is frozen for 15 days or more per year ) *pink regions : intermittently frozen ground ( the soil is frozen for fewer t
	01:00, 18 April 2005	350 × 372 (33 KB)	Ktz~commonswiki	Distributions of permafrost in the Nortern Hemispher. {{PD-USGov-NASA}} http://earthobservatory.nasa.gov/Study/FrozenSoils/