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Landsat

Satellite imagery of Alaska’s coastline. Fans of gray and brown silt appear stacked on top of each other in the blue ocean.
Posted inNews

Coastlines Around the World Are Losing Sediment

by J. Besl 12 December 202412 December 2024

A new tool maps coastal sediments on the basis of water color. It shows that 75% of the world’s coastlines may be losing suspended sediment.

A black and white satellite image shows sea ice, with cracks appearing bright white, beside snow-covered landfast ice (gray) and land (dark).
Posted inScience Updates

Monitoring Polar Ice Change in the Twilight Zone

by Ted Scambos, Christopher Shuman, Mark Fahnestock, Tasha Snow and Christopher Crawford 20 February 202421 February 2024

Landsat’s new extended data collection program is mapping Arctic and Antarctic regions year-round, even in polar twilight.

A boxy spacecraft with large solar “wings” takes a detailed look at Earth’s surface.
Posted inNews

Major Lakes Have Suffered Major Water Losses over the Past Few Decades

Damond Benningfield, Science Writer by Damond Benningfield 27 June 202329 June 2023

A new study shows that losses are global in both arid and humid regions and could have significant impacts on a quarter of Earth’s population.

The Old Crow River meanders between Alaska and the Yukon in the Arctic.
Posted inNews

As the Arctic Warms, These Rivers Are Slowing Down

by Danielle Beurteaux 14 April 202317 April 2023

The Arctic is warming up, but instead of large rivers migrating faster, they’re actually slowing down because of shrubification.

A large wall of ice looms above a body of water, and a waterfall trickles down the ice near the center of the image.
Posted inNews

Alaskan Glaciers Advance and Retreat in Satellite Imagery

Katherine Kornei, Science Writer by Katherine Kornei 12 September 202212 September 2022

Researchers tracked 19 maritime glaciers in Kenai Fjords National Park over several decades and found that tidewater glaciers tended to experience less ice loss than other types of glaciers.

Satellite images of the Yangtze River in 1999 and 2010, showing a radical reduction in suspended sediment
Posted inNews

Satellites Show Magnitude of Human Influence on River Sediment Flux

by Mohammed El-Said 12 July 20228 September 2022

Dam-building has decreased the amount of sediment transported by rivers, while land use changes have increased the amount.

A boreal forest sits at the base of Alaska’s snowcapped mountains with a stream in the foreground.
Posted inNews

Satellites Reveal Slow Shift of the Entire Boreal Biome

by Saima May Sidik 5 April 20228 March 2023

According to a new study, warmer temperatures and high soil nitrogen levels are causing Earth’s largest land biome to advance northward.

Posted inNews

Una nueva herramienta crea rápida y gratuitamente mapas de inundaciones para el sur global

by J. Besl 8 December 202131 March 2022

Un nuevo programa en línea puede trazar rápidamente los contornos de inundaciones pasadas, permitiendo que los países con escasez de datos se preparen para futuros desastres.

Overhead shot of a flooded river in the center of Hue, Vietnam
Posted inNews

New Tool Crafts Fast, Free Flood Maps for the Global South

by J. Besl 2 November 202130 September 2022

A new online program can quickly map the outlines of past floods, allowing data-scarce countries to prepare for future disasters.

Kichwa forest monitors in a deforested site at Copal Urco in the Peruvian Amazon.
Posted inNews

Indigenous Peoples Harness Space Technology to Stop Deforestation

by Andrew J. Wight 26 August 202130 March 2023

Satellite observations have long been used to detect deforestation, and a new study shows that giving Indigenous groups greater access to these data can improve response times and reduce tree cover loss.

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