All articles tagged with #grace satellites
Researchers analyzing data from the GRACE satellites discovered a mysterious gravity signal off the coast of Africa that lasted for about two years, likely caused by a previously unknown geological process involving a phase transformation in Earth's lower mantle, revealing the planet's complex internal dynamics.
Scientists analyzing data from NASA's GRACE satellites discovered evidence of a massive shift deep within the Earth's interior near the core-mantle boundary, possibly caused by changes in mantle minerals like perovskite, which may have influenced Earth's magnetic field and caused a geomagnetic jerk around 2007. They plan to use data from the follow-up GRACE-FO mission to further investigate these deep Earth processes.
A 2007 anomaly in Earth's gravity field over the eastern Atlantic, detected by satellites, suggests a deep mantle phase change in mineral structure near the core-mantle boundary, possibly linked to a geomagnetic jerk, indicating significant mass redistribution deep within the planet rather than surface activity.
NASA-German satellite data reveals a significant drop in global freshwater levels since 2014, attributed to persistent droughts and possibly exacerbated by global warming. The study highlights a 290 cubic mile reduction in freshwater storage from 2015 to 2023 compared to 2002-2014 levels, with major droughts occurring worldwide. The findings suggest a potential long-term shift towards drier conditions, with implications for agriculture, water supply, and climate resilience.
NASA and German satellites have detected a significant drop in global freshwater levels since May 2014, with levels remaining low due to persistent droughts and climate change. The GRACE satellites revealed that from 2015 to 2023, freshwater storage on land was significantly lower than the average from 2002 to 2014. This decline is linked to major droughts and warmer ocean temperatures, exacerbated by global warming, which increases atmospheric water vapor and alters precipitation patterns. The study suggests this trend may continue, posing risks to agriculture and water supplies.
NASA and German satellites have detected a significant drop in Earth's freshwater levels since 2014, with a persistent decline linked to global droughts and possibly global warming. The study, using data from GRACE satellites, highlights a 290 cubic mile reduction in freshwater storage, equivalent to two and a half times the volume of Lake Erie. This decline, exacerbated by extreme weather patterns and increased atmospheric water vapor, poses risks of water scarcity, impacting agriculture and communities worldwide.
Researchers have discovered that everything weighs slightly less in an area of upwards of 500,000 square miles surrounding Canada's Hudson Bay region. The cause of this anomaly is reduced molten magma under the surface of the region, squished out by pressure above-ground from two gigantic glaciers during the last ice age. While the Laurentide Ice Sheet theory and data from GRACE account for some of the reasons there is missing gravity over Canada, they only explain roughly 25-45 percent of the gravitational difference. Scientists estimate that the remaining 55-75 percent is down to a theory to do with convention.