File:Athabasca Glacier Runoff.jpg
From Global Warming Art
Description
Melt water outflow from the Athabasca glacier in the Columbia Icefield, Canada. This glacier has retreated ~1500 m since the late 19th century [1].
Downcutting of ice due to the melt water flow is clearly visible in this image. Similar downcutting can aid in the creation of crevasses, such as contributed to the breakup of the Larsen B Ice Shelf[1]. When the water in channels such as this manages to reach the underside of the glacier, it can also cause glacial flow to significantly increase by virtue of lubrication.[2]
Copyright
Image taken by Wikipedia editor Wing-Chi Poon.
Source: Image:Melting Toe of Athabasca Glacier.jpg
   |
This file is licensed under the Creative Commons Attribution ShareAlike 2.5 License |
References
- ^ Scambos, T., C. Hulbe, M. Fahnestock, and J. Bohlander (2000). "The link between climate warming and break-up of ice shelves in the Antarctic Peninsula". Journal of Glaciology 46: 516–530.
- ^ H. Jay Zwally, Waleed Abdalati, Tom Herring, Kristine Larson, Jack Saba, Konrad Steffen. "Surface Melt-Induced Acceleration of Greenland Ice-Sheet Flow". Science 297 (5579): 218-222.
GWArt images and pages linking to this file
- Thumbnail gallery of all images
Linked Pages
Linked Images
Wikipedia pages and images linking to this file
File history
Click on a date/time to view the file as it appeared at that time.
| Date/Time | Thumbnail | Dimensions | User | Comment | |
|---|---|---|---|---|---|
| current | 02:04, 24 April 2006 |  | 2,048×1,360 (1.75 MB) | Robert A. Rohde (Talk | contribs) |
Metadata
This file contains additional information, probably added from the digital camera or scanner used to create or digitize it. If the file has been modified from its original state, some details may not fully reflect the modified file.
| Camera manufacturer | Canon |
|---|---|
| Camera model | Canon EOS DIGITAL REBEL |
| Exposure time | 1/320 sec (0.003125) |
| F Number | f/10 |
| ISO speed rating | 100 |
| Date and time of data generation | 15:44, 4 July 2005 |
| Lens focal length | 18 mm |
| Orientation | Normal |
| Horizontal resolution | 180 dpi |
| Vertical resolution | 180 dpi |
| File change date and time | 15:44, 4 July 2005 |
| Y and C positioning | 1 |
| Exif version | 2.2 |
| Date and time of digitizing | 15:44, 4 July 2005 |
| Image compression mode | 3 |
| Shutter speed | 8.3219299316406 |
| Aperture | 6.6438598632812 |
| Exposure bias | 0 |
| Maximum land aperture | 3.6147155761719 |
| Metering mode | Pattern |
| Flash | Flash did not fire |
| Color space | sRGB |
| Focal plane X resolution | 2295.9641255605 |
| Focal plane Y resolution | 2285.7142857143 |
| Focal plane resolution unit | inches |
| Sensing method | One-chip color area sensor |
| Custom image processing | Normal process |
| Exposure mode | Auto exposure |
| White Balance | Auto white balance |
| Scene capture type | Standard |
