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Tag Archives: Geoscience

Catching energy-exploration caused earthquakes before they happen

ALBUQUERQUE, N.M. — Geoscientists at Sandia National Laboratories used 3D-printed rocks and an advanced, large-scale computer model of past earthquakes to understand and prevent earthquakes triggered by energy exploration. Injecting water underground after unconventional oil and gas extraction, commonly known as fracking, geothermal energy stimulation and carbon dioxide sequestration all can trigger earthquakes. Of course, […]

American Indian Science and Engineering Society recognizes early-career Sandia engineer

ALBUQUERQUE, N.M. — Geoscience engineer Dylan Moriarty has been named the 2019 Most Promising Engineer or Scientist by the American Indian Science and Engineering Society. The award is given to an American Indian, Alaska Native, Native Hawaiian, Pacific Islander, First Nations and other indigenous person of North America with less than five years of work […]

Iron rain fell on early Earth, new Z machine data supports

ALBUQUERQUE, N.M. — Researchers at Sandia National Laboratories’ Z machine have helped untangle a long-standing mystery of astrophysics: why iron is found spattered throughout Earth’s mantle, the roughly 2,000-mile thick region between Earth’s core and its crust. At first blush, it seemed more reasonable that iron arriving from collisions between Earth and  planetesimals — ranging […]

Computer power clicks with geochemistry

ALBUQUERQUE, N.M. — Sandia National Laboratories is developing computer models that show how radioactive waste interacts with soil and sediments, shedding light on waste disposal and how to keep contamination away from drinking water. “Very little is known about the fundamental chemistry and whether contaminants will stay in soil or rock or be pulled off […]

Study rebuts hypothesis that comet attacks ended 13,000-year-old Clovis culture

ALBUQUERQUE, N.M. — Rebutting a speculative hypothesis that comet explosions changed Earth’s climate sufficiently to end the Clovis culture in North America about 13,000 years ago, Sandia lead author Mark Boslough and researchers from 14 academic institutions assert that other explanations must be found for the apparent disappearance. “There’s no plausible mechanism to get airbursts […]

Detecting tunnels using seismic waves not as simple as it sounds

ALBUQUERQUE, N.M. — You’d think it would be easy to use seismic waves to find tunnels dug by smugglers of drugs, weapons or people. You’d be wrong. Nedra Bonal of Sandia’s geophysics and atmospheric sciences organization is nearing the end of a two-year study, “Improving Shallow Tunnel Detection From Surface Seismic Methods,” aimed at getting […]

Sandia experts help when sinkhole opens up in Louisiana

ALBUQUERQUE, N.M. — The U.S. Geological Survey turned to Sandia National Laboratories for help when the earth opened up last month near Bayou Corne, La. Sandia’s David Borns is providing technical evaluations in weekly teleconferences about possible causes and remedies for a 300-foot-wide sinkhole there. “We try to be of support to adding expertise to […]