File:Pingualuit Crater.jpg
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English: NASA's Landsat 7 satellite captured this image of Pingualuit crater in Canada on August 17, 2002. In this image, water appears blue, and land appears in varying shades of beige. The high latitude of the area limits vegetation, so thick, lush forests do not flourish in this region. The crater’s name derives from an Inuktitut term meaning pimples evoking the hills landform of the surrounding area. Local Inuit also knew it as the Crystal Eye of Nunavik because of its circular form and its clear water.
With a diameter of 3.44 kilometers (2.14 miles), Pingualuit Crater holds a lake about 267 meters (876 feet) deep. Because this lake has no connection to any other water body, inflows from other lakes cannot contaminate Pingualuit’s sediments. Beyond that, the sediments in this crater lake escaped being scoured away by glaciers during the Pleistocene Ice Age. So while sediment deposits in other water bodies in the area do not extend farther back in time than the last ice age, deep sediments in Pingualuit Crater preserve a longer record.
Français : Le satellite Landsat 7 de la NASA a croqué cette image du Cratère des Pingualuit le 17 août 2002. L'eau y apparaît bleue et la terre environnante dans les tons de beige. La latitude élevée de cette région limite la végétation de sorte que la forêt drue et luxuriante ne pourrait s'y implanter. Le nom du cratère origine de l'inuktitut et signifie boutons éruptifs ou boutons d'acné du fait de la forme des collines de la région du cratère. Les Inuits locaux l'appèlent aussi l' œil de crystal du Nunavik en raison de sa forme arrondie et de son eau claire.
Avec un diamètre de 3.44 kilomètres (2.14 milles), le Cratère des Pingualuit enserre un lac de 267 mètres (876 pieds) de profondeur. Puisque ce lac ne communique avec aucun autre plan d'eau ses sédiments ne peuvent être contaminés par un quelconque affluent. De plus, lors du Pléistocène, le mouvement des glaciers a emporté le gros des sédiments du cratère, de sorte que les dépôts sédimentaires actuels de surface ne remontent que jusqu'à la dernière période de glaciation, les sédiments plus profonds relevant d'une période plus ancienne. |
| Date | |
| Source | http://earthobservatory.nasa.gov/IOTD/view.php?id=8472 (direct link) |
| Author | NASA/Jesse Allen/University of Maryland Global Land Cover Facility |
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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.) |  |
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| Date/Time | Thumbnail | Dimensions | User | Comment | |
|---|---|---|---|---|---|
| current | 11:50, 3 March 2013 | | 500 × 375 (80 KB) | Huntster (talk | contribs) | Strange error... |
| 11:46, 3 March 2013 |  | 4,000 × 3,000 (4.95 MB) | Huntster (talk | contribs) | Lossless crop | |
| 01:48, 13 February 2008 |  | 439 × 344 (75 KB) | Bkkbrad (talk | contribs) | {{Information |Description=en:Pingualuit crater. More info at [http://earthobservatory.nasa.gov/Newsroom/NewImages/images.php3?img_id=17919 Earth Observatory]. |Source=http://earthobservatory.nasa.gov/Newsroom/NewImages/Images/newquebec_l7_2002229_l |
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