Global Surveying
Surveying Beneath Ice: Mapping Continents Hidden From View
Airborne radar, satellite altimetry, GNSS, gravity, and decades of field surveys reveal the mountains, canyons, lakes, and basins concealed…
Surveying connects us to place
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Why Elevation Follows Gravity: The Geoid Beneath Every Height
GNSS measures height above a mathematical ellipsoid, but practical elevation depends on gravity, the geoid, and a physical definition of level.
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Instruments & Methods
Reading Motion in Radar Fringes: How InSAR Maps a Changing Ground
By comparing the phase of repeated radar observations, InSAR can reveal earthquake deformation, volcanic inflation, subsidence, and other surface…
Instruments & Methods
Surveying a Moving Seafloor: How GNSS-Acoustic Geodesy Tracks Tectonic Plates
Satellites cannot reach through seawater, so marine geodesists combine GNSS at the surface with acoustic ranging below to measure…
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