The reality of ongoing climate warming might seem plainly obvious today after a summer of weather extremes in the whole northern hemisphere. A few years back however, some media and some experts were entangled in debates about an alleged pause in global warming. In two new studies, a group of international scientists joined forces to disentangle any possible 'hiatus' confusion, affirming that there was no evidence for a significant pause or slowdown of global warming.
Despite the looming ecological consequences, glacier motion remains poorly understood. The bedrock, the ice-bed interface and the water-filled cavities all affect friction and influence how the ice will flow, but studying these poses challenges -- remote radar sensing can track glacial movement, but it can't measure detailed properties of the ice and rock. In the Journal of Chemical Physics, Bo Persson describes a new model of ice friction that offers crucial insight into glacier flows.
Researchers argue in a new study that a paradigm shift is needed for assessing bridges' tsunami risk.
A research team led by Osaka University simulated glassy colloidal solids to understand their mechanical and failure properties. Under strain, the hard-sphere glasses deformed elastically (reversibly), partly plastically (irreversibly), or underwent yielding or jamming. The size of the elastic and plastic zones on the phase diagram, and the nature of failure, depended on how deeply the glasses were annealed. A unified framework for amorphous solid rheology will have applications across technology and biology.
In the search for life on other planets, scientists traditionally have looked for a world with water. But an Ohio State geophysicist wonders if we should look to rocks instead.
Scientists and engineers on a deep-sea expedition aboard the research vessel Atlantis in the East Pacific Ocean will be broadcasting live to the American Geophysical Union fall meeting exhibit booth from 2:30 to 3:30 p.m. EST on Tuesday, Dec. 11, Wednesday, Dec. 12, and Thursday, Dec. 13.
Cobalt deposits in the Democratic Republic of Congo, one of Earth's largest cobalt-mining regions, are 150 million years younger than previously thought, according to a new study by University of Alberta geologists. The study provides critical insight into exploration for cobalt, an important component in rechargeable batteries.
More and more rainfall extremes are observed in regions around the globe -- triggering both wet and dry records, a new study shows. Yet there are big differences between regions: The central and Eastern US, northern Europe and northern Asia have experienced heavy rainfall events that have led to severe floods in recent past. In contrast, most African regions have seen an increased frequency of months with a lack of rain.
Earthquake hazard assessment often overlooks intra-slab earthquakes. EarthScope Transportable Array data for the 2016 Iniskin and Nov. 30, 2018 Anchorage earthquakes in Alaska offer new insight into potential causes of heavy shaking from these intra-slab events.
Seventy percent of the current infrastructure in the Arctic has a high potential to be affected by thawing permafrost in the next 30 years. Even meeting the climate change targets of the Paris Agreement will not substantially reduce those projected impacts, according to a new study published in Nature Communications.