Goldschmidt victor M

Attempts to estimate eustatic sea-level changes must be able to average out the numerous local and tectonic effects to arrive at a globally meaningful estimate of sea-level change. Most coastlines seem to be dominated by local fluctuations that are larger in magnitude than any global sea-level rise. Recently satellite radar technology has precisely measured sea surface height and documented annual changes in sea level. Radar altimetry can map sea surface elevations to the sub-inch scale, and to do this globally, providing an unprecedented level of understanding of sea surface topography. Satellite techniques support the concept that global sea levels are rising at about 0.1 inches (.25 cm) per decade.

See also atmosphere; climate, climate change; deserts; glacier, glacial systems.

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