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“#Climate change may cause extreme waves in Arctic” A wave washing up on the Inuvialuit hamlet of Tuktoyaktuk in Canada’s Northwest Territories during an August 2019 storm. Credit: Weronika Murray Extreme ocean surface waves with a devastating impact on coastal communities and infrastructure in the Arctic may become larger due to climate change, according to…
“#How does Earth sustain its magnetic field?” Credit: Carnegie Institution for Science How did the chemical makeup of our planet’s core shape its geologic history and habitability? Life as we know it could not exist without Earth’s magnetic field and its ability to deflect dangerous ionizing particles from the solar wind and more far-flung cosmic…
“#Iron in the Greenland ice core relative to Asian loess records over the past 110,000 years” The δ18O (A), CO2 concentration (B), dust particle (C) and DFe (D) concentrations over the past 110 kyr B.P.. The red stars represent the ice samples for this study. The data of δ18O, dust particle and DFe from NEEM…
“#Simulations show magnetic field can change 10 times faster than previously thought” Credit: CC0 Public Domain A new study by the University of Leeds and University of California at San Diego reveals that changes in the direction of the Earth’s magnetic field may take place 10 times faster than previously thought. Their study gives new…
“#A typhoon changed earthquake patterns, study shows” Images from a satellite (LANDSAT) show massive erosion after the typhoon Morakot hit Taiwan. This influenced seismicity in the affected regions. Credit: NASA/LANDSAT The Earth’s crust is under constant stress. Every now and then this stress is discharged in heavy earthquakes, mostly caused by the slow movement of…
“#Slow earthquakes in Cascadia are predictable” GPS stations reveal activity beneath Cascadia where the oceanic floor slides beneath North America. The plate interface is locked at shallow depths (the shaded area), but we see recurring slow-slip events (in blue) that unzip the plate interface, generating tremors (the black dots). Credit: California Institute of Technology If…
“#Cause of abnormal groundwater rise after large earthquake” After the Kumamoto (Japan) earthquake, an abnormal rise in groundwater level was noticeable in the recharge area of the wide-area groundwater flow system in the Kumamoto area. Credit: Associate Professor Takahiro Hosono Increases in groundwater levels and volumes after large earthquakes have been observed around the world,…
“#Geologists identify deep-earth structures that may signal hidden metal lodes” A new study shows that giant ore deposits are tightly distributed above where rigid rocks that comprise the nuclei of ancient continents begin to thin, far below the surface (white areas). Redder areas indicate the thinnest rocks beyond the boundary; bluer ones, the thickest. Circles,…
“#SwRI’s SLED-W algorithms detect crude oil on water” This image depicts the SLED-W machine vision system processing visual images of oil on water (left) and thermal data (right). Algorithms compare visual and thermal data to determine if oil is present on water. Credit: Southwest Research Institute Southwest Research Institute has developed computer-based techniques to accurately…
“#Getting to the bottom of Antarctic ice shelf melt” Credit: Una Miller/Unsplash New measurements from the ocean under the center of the Ross Ice Shelf have significantly improved our understanding of the complex processes that drive melting in Antarctica. The measurements are the subject of a paper published this week in scientific journal Proceedings of…