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9 December 2011
Divining water using gravity
Researchers are using technology a tad more sophisticated and scientific than dowsing rods to detect underground water from afar: sensors that measure minuscule changes in gravity.
Surviving an acidic tide
Francisco Chavez has been studying a single bay in northern California for over half his scientific career. But his work isn’t isolated; his measurements are helping tell the story of Pacific Ocean acidification.
Singing whales take center stage in seismic study
One man’s noise is another man’s data — which is why seismologists are giving marine biologists an unexpected boost these days.
8 December 2011
Breaking the hydro-illogical cycle
The news about drought is that – compared to other natural hazards like earthquakes and hurricanes – it doesn’t make the news that often. Droughts are the “Rodney Dangerfield of natural hazards,” said Don Wilhite of the University of Nebraska. “They get no respect.”
Drilling to tell a tsunami tale
With several talks at the American Geophysical Union’s Fall Meeting focused on recent tsunamis and earthquakes, it’s easy to believe the next big one is headed towards the California coast RIGHT NOW – even though it probably isn’t. But according to models, an earthquake originating within Alaska’s Aleutian island chain could propel 7-10 meter (20-30 feet) tsunami waves to the California coast. With that possibility looming, a collaborative team is …
Nutrients and bacteria surf the internal waves of Huntington Beach
With a nickname like “Surf City,” waves clearly play an important role at Huntington Beach in Orange County, Calif. Surfers ride the breaking crests that roll in to shore, and swimmers splash in the foamy white spray. But these aren’t the ocean’s only waves – others travel below the surface, invisible to a tourist’s camera lens.
Japanese megaquake triggered tiny California tremors
As southern Californians absorbed the news of the devastating March 11 earthquake in Japan, seismic instruments under their feet sensed the shocks as well.
Scientists simulate explosive volcanic eruptions in the lab
Recipe for a volcano: take some rock powder from a recent eruption (basaltic-andesite works best), combine with some limestone in a small capsule, and cook in a pressure-cooker at 1200 degrees Celsius (2200 Fahrenheit) until gas bubbles form. Serve warm.
Extreme-living microbes take carbon from the air
Blazing orange and yellow mats of microbial communities layer the beds of Yellowstone’s springs. They’re clearly using up the environment’s iron and sulfur for their energy needs, he said. But they also need carbon and no one understood how the carbon was swirling into the mix.
7 December 2011
Doubling virtual carbon dioxide provides insight into atmospheric interactions
It’s an environmentalist’s nightmare: What would happen if the amount of carbon dioxide doubled overnight? Yutian Wu asked just that question.
GeoSpace is a blog on Earth and space science, managed by AGU’s Public Information staff. The blog features posts by AGU writers and guest contributors on all sorts of relevant science topics, but with a focus on new research and geo and space sciences-related stories that are currently in the news.