31 Jul '18, 7pm

World of Change: Padma River

Like parents measuring a child’s height, scientists measure erosion on the Padma River by noting differences in its width, depth, shape, and overall appearance. These natural-color satellite images show the changes to the shape and width of the Padma since 1988, and each twist and zigzag tells a different geologic story about the river. The images were acquired by Landsat satellites: the Thematic Mapper on Landsat 5, the Enhanced Thematic Mapper Plus on Landsat 7, and the Operational Land Imager on Landsat 8. They include a combination of shortwave infrared, near infrared, and visible light to highlight differences between land and water. All images were acquired in January and February, during the dry season.

Full article: https://earthobservatory.nasa.gov/WorldOfChange/PadmaRiver

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