Science, Space and Technology News 2023
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Since the 1980s, researchers have observed significant periods of unrest in a region of California’s Eastern Sierra Nevada mountains characterized by swarms of earthquakes as well as the ground inflating and rising by almost half an inch per year during these periods. The activity is concerning because the area, called the Long Valley Caldera, sits atop a massive dormant.
What’s going on beneath the surface of the Long Valley Caldera, the site of a massive supervolcano eruption 760,000 years ago? A new study uses seismic waves to image the underground environment in the region and finds that the magma chamber is cooling off. However, earthquakes may still result from the gases and fluids released from the magma’s crystallization. Credit: E. Biondi
Though there are several dozen seismometers placed throughout the Eastern Sierra region, Zhan’s technique utilizes fiber optic cables to make seismic measurements in a process called distributed acoustic sensing . The 100-kilometer stretch of cable used to image the Long Valley Caldera was comparable to a stretch of 10,000 single-component seismometers. Over a year and a half, the team used the cable to measure more than 2,000 seismic events, most too small to be felt by people.
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California supervolcano is cooling off but may still cause quakesSince the 1980s, researchers have observed significant periods of unrest in a region of California's Eastern Sierra Nevada mountains characterized by swarms of earthquakes as well as the ground inflating and rising by almost half an inch per year during these periods.
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Cooling trend in California supervolcano, but seismic risks still loomInteresting Engineering is a cutting edge, leading community designed for all lovers of engineering, technology and science.
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In big year for labor, California Gov. Gavin Newsom delivers both wins and surprisesCalifornia Gov. Gavin Newsom often touts California's leadership on the national stage
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In big year for labor, California Gov. Gavin Newsom delivers both wins and surprisesCalifornia Gov. Gavin Newsom often touts California's leadership on the national stage.
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In big year for labor, California Gov. Gavin Newsom delivers both wins and surprisesCalifornia Gov. Gavin Newsom often touts California's leadership on the national stage.
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Iran shares chilling message for Israel after Gaza hospital explosion kills 500: ‘Time is OVER’Iran's foreign minister posted an ominous message about Israel following an explosion at a hospital that left hundreds dead. The cause of the explosion has been disputed.
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