Author: Stacy Morford6
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Detecting Landslides from a Few Seismic Wiggles
Over the last six years, seismologists Göran Ekström and Colin Stark have been perfecting a technique for picking out the seismic signature of large landslides. They just discovered North America’s largest known landslide in many years – 200 million tons of sliding rock in Alaska.
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Testing the Speed of Lava: What It Says about Escape Times & Mars
Elise Rumpf’s lava flow simulations are yielding new details about the velocity of lava over different surfaces. They may also hold clues about the surfaces of other planets.
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Catch Up on the Latest in Earth Science with AGU Sessions Live Online
The American Geophysical Union’s Fall Meeting opens in San Francisco this week. Catch up on your interests through AGU’s On-Demand live stream.
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What Is Ocean Acidification & Why Does It Matter?
Excess carbon dioxide absorbed into the oceans is starting to have profound effects on marine life, from oysters to tiny snails at the base of the food chain. Our scientists explain the changes and what they are learning about ocean acidification in the past.
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Partnering Best Minds in Science & Business to Take on Climate Change
While national governments can set goals for combating climate change, many of the decisions that lead to action will come from business leaders. The new Columbia Center for Climate and Life helps them build from a foundation of science.
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Greenland Glaciers Retreating Faster than Any Time in Past 9,500 Years
A new study uses sediment cores to track the expansion and retreat of glaciers through time, and finds that they are retreating quickly and are more sensitive to temperature change than previously realized.
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Exploring Beneath Earth’s Changing Ice Sheets
If just the West Antarctic Ice Sheet were to melt, it would raise global sea level by 6 meters. That’s more than a theoretical problem. West Antarctica is losing ice mass, and scientists are worried.
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Earth’s Magnetic Field: Just Returning to Normal?
Earth’s magnetic field is getting weaker, but it may simply be coming down from an abnormally high intensity rather than being a sign of an impending geomagnetic reversal.
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Climate Is Changing Fast in West Antarctica
Fast-rising temperatures on the Antarctic Peninsula are having an impact on the ice and marine life, and providing clues about future ecosystem changes elsewhere.
