Checked content

File:Mercury fremont ice core.png

Description
English: This chart shows the level of atmospheric mercury deposition detected in ice cores from the Upper Fremont Glacier in Wyoming. Heightened deposition rates correspond to volcanic and anthropogenic events over the past 270 years. Preindustrial deposition rates can be conservatively extrapolated to present time (4 ng/L; in green) to illustrate the increase during the past 100 years (in red) and significant decreases in the past 15-20 years.
Français : Ce graphique représente les dépôts atmosphériques de mercure décelés aux Etats-Unis dans les carottes de glace prélevées dans le haut du glacier de Fremont (Wyoming, USA). Les pics de déposition au cours des 270 dernières années correspondent à des événements volcaniques et anthropiques. Le taux pré-industriel de dépôt peut être extrapolé à conservatrice heure actuelle (4 ng/L, en vert). On note dans cette région une forte augmentation au cours des 100 dernières années (en rouge) et une relative mais significative diminution dans les 15-20 dernières années.
Date 2005
Source http://toxics.usgs.gov/pubs/FS-051-02/ English Wikipedia, original upload 12 May 2005 by SEWilco
Author US government
Gnome-x-office-drawing.svg File:Mercury in Ice Core Upper Fremont Glacier.svg is a vector version of this file.
It should be used in place of this raster image when superior.


File:Mercury fremont ice core.png Gnome-go-next.svg File:Mercury in Ice Core Upper Fremont Glacier.svg

For more information about vector graphics, read about Commons transition to SVG.
There is also information about MediaWiki's support of SVG images.


New SVG image

Public domain This image is in the public domain because it contains materials that originally came from the United States Geological Survey, an agency of the United States Department of the Interior. For more information, see the official USGS copyright policy.

български | català | Deutsch | English | español | eesti | suomi | français | galego | italiano | 한국어 | македонски | മലയാളം | Nederlands | polski | português | русский | Türkçe | 中文 | 中文(简体)‎ | +/−

USGS logo green.svg
The following pages on Schools Wikipedia link to this image (list may be incomplete):

The best way to learn

Schools Wikipedia has been carefully checked to give you the best learning experience. SOS Children believes that a decent childhood is essential to a happy, healthy. Our community work brings families new opportunities through education, healthcare and all manner of support. Go to http://www.soschildrensvillages.org.uk/sponsor-a-child to sponsor a child.