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SAR

Synthetic Aperture Radar and Interferometric Synthetic Aperture Radar

Profile of a radio telescope at sunset
Posted inNews

More Than Just Astronomy: Radio Telescopes for Geophysics

Katherine Kornei, Science Writer by Katherine Kornei 6 December 201912 December 2025

Linking an existing network of radio telescopes with satellite radar would make it possible to measure ground displacements in a globally consistent way, scientists propose.

Ash from the Sierra Negra volcano on Isla Isabela in the Galápagos Islands drifts across the sky during an October 2005 eruption.
Posted inResearch Spotlights

Forecasting Volcanic Eruptions with Artificial Intelligence

by E. Underwood 3 December 201912 December 2025

A machine learning algorithm automatically detects telltale signs of volcanic unrest.

Buckled blacktop road in front of a tree-lined street
Posted inNews

How Satellite Data Improve Earthquake Monitoring

Rachel Crowell, Science Writer by Rachel Crowell 19 July 201912 December 2025

Case studies from around the world illustrate the power of geodetic data in earthquake monitoring.

Posted inResearch Spotlights

Radar Technique Shows Magma Flow in 2014 Cape Verde Eruption

Sarah Stanley, Science Writer by Sarah Stanley 1 February 201612 December 2025

The European Space Agency's Sentinel-1 satellite captures volcanic surface changes that reveal the flow below.

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