Search results for topographical features

Planetary Sciences Jan 31, 2023

Deep fractures and water-carved valleys on Mars

Mars displays fascinating geology everywhere you look—and nowhere is this more true than in the fractured, wrinkled ground seen in this image from ESA's Mars Express.

Space Exploration Dec 19, 2022

NASA developing AI to navigate the lunar surface using landmarks

Much like how familiar landmarks can give travelers a sense of direction when their smart phones lose their lock on GPS signals, a NASA engineer is teaching a machine to use features on the Moon's horizon to navigate across ...

Planetary Sciences Dec 14, 2022

New study says left-over planetesimals, not asteroids, created the moon's largest craters

The moon's pock-marked surface tells the story of its history. It's marked by over 9,000 impact craters, according to the International Astronomical Union (IAU.) The largest ones are called impact basins, not craters. Now, ...

Earth Sciences Dec 12, 2022

Scientists reveal controlling factors of water and heat exchanges over the Zoige wetland

The Tibetan Plateau (QTP) is composed of complex and diverse topographic features, as well as many significant differences in water, heat, and momentum flux exchange under different underlying surfaces. Alpine, or high elevation ...

Planetary Sciences Dec 6, 2022

How the current Southwestern North American megadrought is affecting Earth's upper atmosphere

New research, based on two decades' worth of data, shows that in the ten years after its onset in 2000, the Southwestern North American (SWNA) megadrought caused a 30% change in gravity wave activity in Earth's upper atmosphere.

Earth Sciences Dec 6, 2022

Kilometer-scale modeling better reflects the relationship between land and precipitation

The technique referred to as "dynamical downscaling," which involves the use of regional climate models to dynamically infer the effects of large-scale climate processes at local scales, has proved to be an effective way ...

Ecology Nov 15, 2022

Researchers unveil patterns of species diversity and determinants in temperate forest

The Qinling Mountains, which run east-west and serve as the geographical boundary between northern and southern China as well as the climatic demarcation line between the subtropical and warm temperate zones in China, are ...

Earth Sciences Nov 11, 2022

Climate change strikes: Lightning patterns change with global warming

New research has shown climate change could alter lightning patterns across Europe.

Earth Sciences Nov 1, 2022

Deep learning underlies geographic dataset used in hurricane response

As Hurricane Fiona made landfall as a Category 1 storm in Puerto Rico on Sept. 18, 2022, some areas of the island were inundated with nearly 30 inches of rain, and power to hundreds of thousands of homes was knocked out. ...

Earth Sciences Oct 20, 2022

How old is California's Yosemite Valley?

First-time visitors to Yosemite Valley gape in awe at the sheer granite wall of El Capitan and the neatly sliced face of Half Dome, aware, perhaps vaguely, that rain and glaciers must have taken a long time to cut and sculpt ...

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