By dissecting the sloshing signals of ocean tides recorded by magnetic satellites high above the Earth, a team of international researchers has managed to produce interior images of our planet, the scientists reported today in the journal Science Advances. Their proof-of-concept work could transform scientists’ ability to image and understand what lies below Earth’s crust, and could even help them remotely probe the interiors of other celestial bodies with tidal saltwater, such as Jupiter’s moon Europa
Wastewater Injection and Induced Seismicity
An increase in earthquake activity is occurring in areas of the eastern and central U.S., areas where unprecedented volumes of wastewater, produced along with oil and gas, are being disposed of, by injection, into deep geological formations. A new study, out today in Science, provides strong evidence of the link between oil and gas wastewater disposal and earthquakes in Texas.
Losing Its Cool
Measuring just how much mass a glacier is losing—through melting and calving—is no easy task. While there’s plenty of satellite data from space, scientists haven’t had access to much local, on-the-ground observation, which is the sort of information that’s necessary to more accurately measure glacial mass loss. But now a team of scientists, including CIRES’ Mike Willis, have put a series of GPS systems in place that give them the kind of data they need. Using that information, they find that previous estimates of mass loss from the Greenland Ice Sheet—already known to be shrinking—may be underestimates.