What is Sea Level

The video explores the complexities of measuring sea level due to Earth's non-uniform shape and varying gravitational forces. It explains how the Earth's rotation causes bulging at the equator, affecting sea level measurements. The gravitational pull of landmasses and varying densities within the Earth further complicate this. Geodetic scientists use the Earth Gravitational Model to accurately define sea level, accounting for these factors, and integrate this model into GPS technology for precise location data.

What role do geodetic scientists play in defining sea level?

How does the Earth's gravitational model affect GPS measurements?