Geophysics/Gravity

Model for the Earth's core: Heidelberg researchers verify presence of solar noble gases in metal of an iron meteorite High-precision noble gas analyses indicate that solar wind particles from our primordial Sun were encased in the Earth's…

Ancient zircons from the jack hills of western Australia hone date of an event that was crucial to making the planet hospitable to lifeCredit: Michael Ackerson, Smithsonian. Scientists led by Michael Ackerson, a research…

Study highlights missing factors or mismodelling in global risk assessmentsCredit: NTU Singapore A 'slow-motion' earthquake lasting 32 years - the slowest ever recorded - eventually led to the catastrophic 1861 Sumatra earthquake,…

Scientists find a new way to tell ages of the stones, and what made themCredit: Yaakov Weiss Diamonds are sometimes described as messengers from the deep earth; scientists study them closely for insights into the otherwise…

Credit: Virginia Tech In a newly published paper, Virginia Tech geoscientists have found that shallow wastewater injection -- not deep wastewater injections -- can drive widespread deep earthquake activity in unconventional oil and gas…

Credit: Vicki Daniels, Geophysical Institute The Alaska Science Pod was created to give voice to the people tackling big scientific questions in the Last Frontier. Through a series of monthly episodes, the podcast will feature research…

Researchers simulate conditions necessary for planet's unique magnetic fieldCredit: Ankit Barik/Johns Hopkins University New Johns Hopkins University simulations offer an intriguing look into Saturn's interior, suggesting that…

Antarctic ice sheet is more likely to remain stable if Paris climate agreement is metCredit: NASA The Antarctic ice sheet is much less likely to become unstable and cause dramatic sea-level rise in upcoming centuries if the world follows…

Study led by UMass Amherst's Rob DeConto is the first to use physics-based model of ice sheet to test Paris Agreement targetsCredit: Knut Christianson AMHERST, Mass. - The world is currently on track to exceed three degrees Celsius…

Findings will help better identify Earth-like planets that could sustain lifeCredit: Image Credit: NASA/Goddard Space Flight Center. Astronomers have identified more than 4,000, and counting, confirmed exoplanets -- planets…

Fracking and earthquakes Hydraulic fracturing to extract trapped fossil fuels can trigger earthquakes. Most are so small or far from homes and infrastructure that they may go unnoticed; others can rattle windows, sway light fixtures and…

Credit: Photo by L. Brian Stauffer CHAMPAIGN, Ill. --A new study found overlooked tsunami hazards related to undersea, near-shore strike-slip faults, especially for coastal cities adjacent to faults that traverse inland bays. Several…

This threatens with sudden destruction of coastal cities and numerous human casualtiesCredit: UrFU / Grigory Tkachenko An international team of scientists from 20 countries identified 47 problems that hinder the successful prevention…

A University of California San Diego engineering professor has solved one of the biggest mysteries in geophysics: What causes deep-focus earthquakes?Credit: Xanthippi Markenscoff These mysterious earthquakes originate between 400…

Studying the violent collisions of black holes and neutron stars may soon provide a new measurement of the Universe's expansion rate, helping to resolve a long-standing dispute, suggests a new simulation study led by researchers at…

Credit: IOCAS Earthquakes and volcanoes in subduction zones may cause great human catastrophe. Previous studies on subduction zone structure and causal mechanisms of giant megathrust earthquakes (M ≥ 9.0) have mainly focused on…

Like tree rings, cave stalagmites are a portal to a prehistoric Earth, and now scientists from UNSW Sydney have found they are consistently reliable as time trackers the world over. In a global investigation into the growth properties…

Credit: Credit: Deng et al (2021) Geophysical Research Letters/AGU WASHINGTON-- Glacial melting due to global warming is likely the cause of a shift in the movement of the poles that occurred in the 1990s. The locations of the North…

Hidden structures reveal 13 million years of seafloor spreadingCredit: GEOMAR It is 2,250 kilometers long, but only 355 kilometers wide at its widest point - on a world map, the Red Sea hardly resembles an ocean. But this is…

Credit: Farrin Abbott Nearly a decade ago, global news outlets reported vast ice melt in the Arctic as sapphire lakes glimmered across the previously frozen Greenland Ice Sheet, one of the most important contributors to sea-level rise.…