File:Sediment and Algae Color the Great Lakes.jpg
![File:Sediment and Algae Color the Great Lakes.jpg](https://upload.wikimedia.org/wikipedia/commons/thumb/e/ee/Sediment_and_Algae_Color_the_Great_Lakes.jpg/771px-Sediment_and_Algae_Color_the_Great_Lakes.jpg?20111013100127)
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Summary
[edit]DescriptionSediment and Algae Color the Great Lakes.jpg |
English: The brilliant streaks of blue and green that colour the Great Lakes in this image are a contradiction. The blue in Lake Michigan and Lake Huron is sediment brought to the surface when strong winds churned the lakes. The green in Lake Erie and in Lake Huron’s Saginaw Bay is algae, which builds on the surface when winds are calm. This image was captured a little more than a week after a persistent mid-latitude cyclone moved out of the region. Some of the pale blue in Lake Erie may be sediment, but the green is an extremely large algal bloom. The algae may have initially spread across the western side of the lake because of windy weather, but calm weather and warm temperatures after the storm allowed green scum to build on the surface, says Colleen Mouw, a researcher at the University of Wisconsin-Madison. The bloom now covers much of the western half of the lake. “This is considered the worst bloom in decades,” says Stumpf. The green in Saginaw Bay is probably an algal bloom as well. The display of color isn’t limited to the lakes. Touched by autumn, the forests around the lakes have turned orange. |
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Date | ||||
Source | NASA Earth Observatory | |||
Author | Jeff Schmaltz | |||
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Image captured by the Moderate Resolution Imaging Spectroradiometer (MODIS) on the Aqua satellite. Image courtesy of the MODIS Rapid Response Team at NASA GSFC.
Licensing
[edit]Public domainPublic domainfalsefalse |
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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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Annotations InfoField | This image is annotated: View the annotations at Commons |
Lake Huron
Saginaw Bay
Lake Michigan
Lake Erie
Michigan
Ontario
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Date/Time | Thumbnail | Dimensions | User | Comment | |
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current | 10:01, 13 October 2011 | ![]() | 3,600 × 2,800 (3.05 MB) | Originalwana (talk | contribs) | {{Information |Description ={{en|1=The brilliant streaks of blue and green that colour the Great Lakes in this image are a contradiction. The blue in Lake Michigan and Lake Huron is sediment |
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Width | 3,600 px |
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Height | 2,800 px |
Bits per component |
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Compression scheme | Uncompressed |
Pixel composition | RGB |
Orientation | Normal |
Number of components | 3 |
Horizontal resolution | 72 dpi |
Vertical resolution | 72 dpi |
Data arrangement | chunky format |
Software used | Adobe Photoshop CS5 Macintosh |
File change date and time | 17:27, 12 October 2011 |
Color space | Uncalibrated |
Date and time of digitizing | 07:10, 12 October 2011 |
Date metadata was last modified | 13:27, 12 October 2011 |
Unique ID of original document | xmp.did:0380117407206811AF1EFB8A415D3846 |