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GPS

A blue fishing boat in water near land.
Posted inNews

Machine Learning Helps Researchers Track Illegal Fishing

by Roberto González 1 March 20231 March 2023

Using machine learning, researchers found that nearly 20% of high seas fishing could be unauthorized.

Photograph of the ionosphere taken from the International Space Station.
Posted inEditors' Vox

The International Reference Ionosphere – A Model Ionosphere

by Dieter Bilitza 15 February 202321 February 2023

An accurate and reliable description of Earth’s ionosphere is of critical importance because of our increased reliance on satellite technology and the significant impact the ionosphere has on it.

A comparison between (left) earthquake motion derived from daily geodetic observations (blue arrows) and the approach of Golriz et al. (red arrows) and (right )the net difference between these methods.
Posted inResearch Spotlights

Improving Coseismic Slip Measurements

by Morgan Rehnberg 29 November 202111 May 2022

A physics-based method estimates the duration of earthquakes’ coseismic phase and can help improve the precision of coseismic slip models and magnitude estimates.

A layer of charged particles, known as the ionosphere, surrounds Earth, shown in purple (not to scale) in this image.
Posted inResearch Spotlights

A Step Toward Making GPS More Resilient to Space Weather

by Sarah Stanley 5 October 202113 October 2021

Researchers have developed a new mathematical model to more accurately capture how irregularities in Earth’s atmosphere interrupt signals from Global Navigation Satellite Systems.

The San Andreas Fault near Juniper Hills, Calif.
Posted inResearch Spotlights

A New Method Produces Improved Surface Strain Rate Maps

by Jack Lee 19 July 20215 December 2022

The transdimensional Bayesian approach handles GPS data limitations better than existing methods and may assist future seismic hazard assessment studies.

Large earthen rupture foregrounds a brightly colored school building damaged by an earthquake.
Posted inNews

Geodetic Data Pinpoint Earthquake-Prone Regions of the Himalayas

by Katherine Kornei 19 March 20207 October 2022

GPS measurements of the Indian and Eurasian plates reveal four locked segments most likely to produce large earthquakes.

Aerial view of the Swiss Alps
Posted inResearch Spotlights

Using GPS Sensors to Capture Key Snowpack Properties

by Sarah Stanley 6 June 201928 July 2022

A low-cost, two-antenna GPS setup could enable valuable snow measurements in remote locations, improving predictions of runoff and avalanche risk.

Boat alone on water in Alaska
Posted inNews

NOAA Monitoring Stations Are Off-Line from a GPS Y2K Moment

by Jenessa Duncombe 9 April 201923 February 2023

The outage could last until November for some stations.

Geodetic GPS station P311 atop the Sierra Nevada mountains at Coyote Ridge, near Bishop, Calif., elevation 3,699 meters.
Posted inScience Updates

Harnessing the GPS Data Explosion for Interdisciplinary Science

by G. Blewitt, W. C. Hammond and C. Kreemer 24 September 201819 November 2021

More GPS stations, faster data delivery, and better data processing provide an abundance of information for all kinds of Earth scientists.

Researchers test a new technique to measure hurricane wind speed from space.
Posted inResearch Spotlights

Measuring Hurricane Wind Speed from Space

by A. Branscombe 1 March 201825 July 2022

A new technique based on GPS signals could provide better wind speed measurements during hurricanes and cyclones.

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Features from AGU Journals

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Earth’s Future
“How to Build a Climate-Resilient Water Supply”
By Rachel Fritts

EDITORS' HIGHLIGHTS
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By Sarah Kang

EDITORS' VOX
Reviews of Geophysics
“Rare and Revealing: Radiocarbon in Service of Paleoceanography”
By Luke C. Skinner and Edouard Bard

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