A meta-analysis of sea-level rise studies shows a majority of assessments mistakenly used geoid models rather than land elevation data.

Most coastal risk assessments have underestimated current sea levels, meaning tens of millions of people face losing their homes to rising waters earlier than expected ...

Credit: International Centre for Global Earth Models (ICGEM) / E. S., Barthelmes, F., Reißland, S., Elger, Like all scientific mysteries, the Indian Ocean geoid low (IOGL) — also known as the Indian ...

A team of geophysicists has traced the origins of Earth’s most extreme gravitational anomaly, a vast depression beneath Antarctica where the pull of gravity is measurably weaker than anywhere else on ...

Earth, in most renderings, is a smooth sphere with a glossy complexion—a blue marble, as pictures snapped from space have shown us. Earth scientists know that’s not exactly true. Earth, in fact, is an ...

"The ocean surface is definitely not flat. It is constantly changing as wind, waves and swells produce surface undulations, daily tidal fluctuations raise and lower the average height." ...

No audio available for this content. The National Geodetic Survey (NGS) has published a technical report that describes options for how NGS can implement a time-dependent geopotential datum and thus a ...