File:20070801 forest.jpg

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Description20070801 forest.jpg	English: Larix gmelinii forest. This is what the Siberians call a "drunken forest". Permafrost that has not melted provides a solid foundation that holds trees upright. When permafrost melts, as it has here, the layer of loose soil deepens and trees lose their foundations, tipping over at odd angles. Kochechum River, Evenkiyskiy Avtonomnyy Okrug, Russia; 66°20'N 99°00'E. As we traveled down river, I saw what the Siberians call a "drunken forest". This area is permafrost, where the soil stays firmly frozen year round. Larch grows well here, but their roots are shallow. When permafrost melts, the trees lose their footing and tilt to the side. I guess the trees look like a drunk trying to walk home, tilted at crazy angles. It is a curious sight, but it is also a clear sign that the temperature in that spot has been warm enough to melt the permafrost. -- Weblog of Dr. Jon Ranson in Siberia. Français : La décongélation du permafrost provoque des phénomènes thermokarstiques (ici des trous et effondrements locaux, et ailleurs des ravine et parfois des ravins), au fur et à mesure que les arbres poussent, ce qui peut donner un aspect de "forêt îvre" à la taïga (ici en Sibérie)
Date	1 August 2007
Source	NASA Science blog
Author	Jon Ranson, NASA Science blog

	Date/Time	Thumbnail	Dimensions	User	Comment
current	12:11, 14 June 2009		538 × 268 (199 KB)	MPF	Crop black border
	20:42, 27 February 2009		540 × 270 (54 KB)	File Upload Bot (Magnus Manske)	{{BotMoveToCommons\|en.wikipedia\|year={{subst:CURRENTYEAR}}\|month={{subst:CURRENTMONTHNAME}}\|day={{subst:CURRENTDAY}}}} {{Information \|Description={{en\|This is what the Siberians call a âdrunken forest.â Permafrost that has not melted provides a

Orientation	Normal
Horizontal resolution	72 dpi
Vertical resolution	72 dpi
Software used	Adobe Photoshop Elements 5.0 (20060914.r.77) Windows
File change date and time	13:11, 14 June 2009
Color space	sRGB
Image width	538 px
Image height	268 px
Date and time of digitizing	11:25, 4 June 2009
Date metadata was last modified	14:11, 14 June 2009

File:20070801 forest.jpg

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