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unsolved mysteries

Image of a thin section of peridotite, taken under a microscope, with the pinks, greens, purples, and blues of olivine crystals of various sizes mixed with other, less brightly colored minerals
Posted inNews

Million or Billion? Narrowing Down the Age of Mantle Processes in New Guinea

by Alka Tripathy-Lang 16 May 202216 May 2022

Mantle rocks in Papua New Guinea contain curious geochemical signatures that scientists have traditionally interpreted as evidence of billions-year-old melting. New evidence suggests otherwise.

The dark blue orb of Neptune is viewed by Voyager 2 at an upward angle from the south pole. A dark navy storm spot, the Great Dark Spot, is just to the right of the center of the planet, and white high-altitude clouds are scattered around the planet.
Posted inNews

Diagnosing Neptune’s Chilly Summer

by Kimberly M. S. Cartier 28 April 202228 April 2022

A pandemic project analyzing a trove of infrared images revealed an unexplained phenomenon taking place in Neptune’s atmosphere.

A red rock tower in front of a backdrop of cloudy sky
Posted inFeatures

Is Earth’s Core Rusting?

by Jiuhua Chen and Shanece S. Esdaille 25 April 202225 April 2022

If subduction carries hydrous minerals deep into Earth’s mantle, they may “rust” the iron outer core, forming vast sinks of oxygen that can later be returned to the atmosphere.

A large hot spring bubbles and steams in the mountains of the Tibetan Plateau.
Posted inNews

Hot Springs Suggest How the Tibetan Plateau Became the Roof of the World

by Saima Sidik 20 April 202221 April 2022

Helium isotopes found in water samples provide a snapshot of what lies beneath the plateau and stimulate debate within the geosciences community.

Cubes of gray-black perovskite in a brown matrix
Posted inNews

How a Newly Discovered Mineral Might Explain Weird Mantle Behavior

by Alka Tripathy-Lang 19 April 202225 April 2022

Scientists not only synthesized davemaoite but deformed it at lower mantle conditions. They found its strength and viscosity to be substantially lower than those of other minerals that make up the lower mantle.

A river in Katherine, Northern Territory, Australia
Posted inResearch Spotlights

Tree Rings Reveal a Puzzling Trend in Monsoon Intensity

by Saima Sidik 31 March 202231 March 2022

Tree rings confirm that in northern Australia, the past 40 years have experienced more rain than any similar length of time in the past 600 years.

Camino dañado por un terremoto en Calexico, California, 2010. El camino muestra grietas en el pavimento. Al fondo se observa un edificio de una planta cercado y el cielo azul.
Posted inNews

Buscando terremotos en la ionosfera

by Nathaniel Scharping 28 March 202228 March 2022

Los terremotos pueden liberar ráfagas de energía eléctrica que se pueden sentir en la ionosfera, a kilómetros por encima de la Tierra. Sin embargo, la teoría sigue siendo controvertida.

A river of molten lava flows across a steaming black basalt landscape. The river flows from a volcanic rift near the top right of the image toward the bottom left. The fissure is filled with brighter and hotter lava and steam and gas billows up from it. The sky on the horizon is a hazy blue-gray.
Posted inNews

The Surprising Greenhouse Gas That Caused Volcanic Summer

by Kimberly M. S. Cartier 21 March 202212 April 2022

Extended periods of volcanism known as flood basalt eruptions lead to volcanic winters, which are often followed by an extended period of warming. But it was more than just carbon dioxide that warmed the globe.

A blue ring of auroral emission glows above Saturn’s north pole.
Posted inNews

Saturn’s Powerful Winds Explain Changes in the Length of Its Day

by Katherine Kornei 17 March 202221 March 2022

Atmospheric winds moving at more than 7,000 kilometers per hour distort Saturn’s magnetic field, revealing why spacecraft have measured changes in the length of a day on the ringed world.

Detailed image shows sculpted layers of ice at Mars’s south pole.
Posted inNews

The Bumpy Search for Liquid Water at the South Pole of Mars

by Damond Benningfield 8 March 20228 March 2022

Studies since 2018 have provided competing explanations of bright radar reflections from the base of the south polar ice cap.

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From AGU Journals

MOST SHARED
Geophysical Research Letters
“Climate Change Drives Widespread and Rapid Thermokarst Development in Very Cold Permafrost in the Canadian High Arctic”
By Louise M. Farquharson et al.

HIGHLY CITED
Tectonics
“Surface uplift, tectonics, and erosion of eastern Tibet from large-scale drainage patterns”
By M. K. Clark et al.

HOT ARTICLE
Water Resources Research
“Probabilistic Description of Streamflow and Active Length Regimes in Rivers”
By Nicola Durighetto et al.


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