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gravity

How Earth precesses and nutates gives clues to interior processes.
Posted inScience Updates

Earth's Wobbly Path Gives Clues to Its Core

by V. Dehant and R. Gross 11 April 20178 April 2022

Understanding the Earth Core and Nutation; Brussels, Belgium, 19–21 September 2016

Topography and bathymetry around Greenland overlain with ancient slab material projected from 1400 kilometers depth.
Posted inResearch Spotlights

Evidence of an Extinct Ocean Basin Detected Beneath Greenland

by Terri Cook 25 May 201611 January 2022

An analysis of a seismic and gravity anomaly discovered in the middle mantle sheds new light on ancient oceans, the mantle's evolution, and ancient magmatism in the Arctic.

Posted inNews

Seeing the Gravitational Waves, Despite the Seismic Waves

by L. O’Hanlon 17 February 20168 February 2023

For detectors to sense the minute jolt of a gravitational wave announced last week, savvy geophysicists and engineers had to keep Earth's tiniest jiggles from reaching ultrasensitive instruments.

Posted inResearch Spotlights

Human Actions Affect Greenland Ice Sheet Surface Mass Balance

by J. Orwig 23 December 20147 March 2023

Scientists address human-driven trends in the Greenland Ice Sheet surface mass balance.

Posted inResearch Spotlights

Role of Lunar Atmospheric Tides in Thermosphere Density

by S. Palus and Faith Ishii 25 November 201423 January 2023

Researchers explored how lunar gravity affects the density of the thermosphere. The study could help improve the accuracy of satellite orbit predictions.

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