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“#Did a volcanic eruption in Alaska help end the Roman republic?” Julius Caesar was assassinated on the Ides of March (March 15) in 44 BC and a bloody civil war followed. This brought down the Roman republic and replaced it with a monarchy led by Caesar’s nephew Octavian, who in 27 BC became the emperor…
“#Research sheds new light on the role of sea ice in controlling atmospheric carbon levels” Credit: Pixabay/CC0 Public Domain A new study has highlighted the crucial role that sea ice across the Southern Ocean played in controlling atmospheric carbon dioxide levels during times of past climate change, and could provide a critical resource for developing…
“#Geologists shed light on the Tibetan Plateau origin puzzle: an open-and-shut perspective” Scientists unraveled part of the mystery surrounding the complex geological structures of the southern Tibetan Plateau Credit: Earth Science Frontiers Earth’s geographical surfaces formed over millions of years, and various theories aim to explain their formation. The most popular theory, called plate tectonics,…
“#The Kerguelen oceanic plateau sheds light on the formation of continents” View of the Rallier du Baty peninsula in the vicinity of the Mont du Commandant, Kerguelen Islands. A pale-coloured rock, syenite, was injected into the basalts (which are darker), uplifting them. The king pengins give an idea of the scale. Credit: Michel de Saint…
“#Artificial intelligence could revolutionize sea ice warnings” Sea ice in the polar sea. Credit: Jørn Berger-Nyvoll, UiT Today, large resources are used to provide vessels in the polar seas with warnings about the spread of sea ice. Artificial intelligence may make these warnings cheaper, faster, and available for everyone. For vessels that journey into the…
“#Natural fluid injections triggered Cahuilla earthquake swarm” Credit: Unsplash/CC0 Public Domain A naturally occurring injection of underground fluids drove a four-year-long earthquake swarm near Cahuilla, California, according to a new seismological study that utilizes advances in earthquake monitoring with a machine-learning algorithm. In contrast to mainshock/aftershock sequences, where a large earthquake is followed by many…
“#Geoscientists create deeper look at processes below Earth’s surface with 3-D images” UT Dallas geoscientists used earthquake data and a computationally intensive technique called a full waveform inversion to create 3D images of the geometry of subducting slabs (green bodies) and induced mantle flows (yellow arrows) under Central America and the Caribbean Sea at a…
“#Researchers unlock clues to a dramatic chapter of Earth’s geological history” If ice once covered the entire planet, how did the transition take place and what does it say about Earth’s climate? Credit: NASA Goddard photo Imagine Earth completely covered in ice. While it’s hard to picture all of today’s oceans and land masses obscured…
“#Tiny sand grains trigger massive glacial surges” A surging glacier in the St. Elias Mountains, Canada. Credit: Gwenn Flowers About 10 percent of the Earth’s land mass is covered in glaciers, most of which slip slowly across the land over years, carving fjords and trailing rivers in their wake. But about 1 percent of glaciers…
“#Scientists detect unexpected widespread structures near Earth’s core” Earthquakes send sound waves through the Earth. Seismograms record the echoes as those waves travel along the core-mantle boundary, diffracting and bending around dense rock structures. New research from University of Maryland provides the first broad view of these structures, revealing them to be much more widespread…