Measuring gravity’s tiny fluctuations is giving the United States an upgraded system of elevations.
geodesy
Posted inResearch Spotlights
A New Way of Visualizing Iceland’s Crustal Deformation
A novel method of calculating strain rates from GPS data shows the South Iceland Seismic Zone is experiencing rapid deformation, including inflation near the island’s most active volcano.
Posted inScience Updates
Seismologists Search for the Indian Ocean’s “Missing Mass”
An Indian scientific team set out to sea last year to find clues to the source of an unusually weak gravitational potential in the middle of the Indian Ocean.
Posted inNews
Jean O’Brien Dickey (1945–2018)
This pioneer in space geodesy started as a particle physicist and went on to unravel relationships between Earth’s rotation and climate processes.
Posted inScience Updates
Universal Units Reflect Their Earthly Origins
On Friday, the kilogram will join its fellow metric units with a definition based on fundamental physical constants, but these units maintain links to their roots in the geosciences.
Posted inAGU News
Gross Receives 2018 Ivan I. Mueller Award for Distinguished Service and Leadership
Richard Gross will receive the 2018 Ivan I. Mueller Award for Distinguished Service and Leadership at AGU’s Fall Meeting 2018, to be held 10–14 December in Washington, D. C. The award acknowledges “major achievements in service to and/or leadership within the field of geodesy.”
Posted inAGU News
Hobiger Receives 2018 Geodesy Section Award
Thomas Hobiger will receive the 2018 Geodesy Section Award at AGU’s Fall Meeting 2018, to be held 10–14 December in Washington, D. C. The award is given “in recognition of major advances in geodesy.”
Posted inEditors' Highlights
Bulging, Shrinking, and Deformation of Land by Hydrologic Loading
The deformation of continents by groundwater can be measured locally by GPS or detected from satellites, but more precisely monitored when measurements are combined with a hydrologic model.
Posted inScience Updates
Recording Belgium’s Gravitational History
Instruments at Belgium’s Membach geophysical station set a new record for monitoring gravitational fluctuations caused by storm surges, groundwater fluctuations, and the Moon’s tidal pull.
Posted inEditors' Vox
The Gravity of Geophysics
A recent article in Reviews of Geophysics examined terrestrial techniques for measuring changes in gravity over time and their application to the geosciences.