Title: What Is Sea Level and How Is It Measured?
Headings: What Is Sea Level and How Is It Measured?
What Is Sea Level and How Is It Measured?
Local Sea Level Varies
Mean Sea Level
Changing Sea Levels
Impacts of Sea Level Rise and Fall

Content: Temperature causes water to expand or contract, thus increasing or decreasing the volume of the ocean. Impacts of Sea Level Rise and Fall
When sea level rises, river valleys become inundated with seawater and become estuaries or bays. Low-lying plains and islands are flooded and disappear under the sea. These are the primary concerns about climate change and rising mean sea level, which appears to be rising by about one-tenth of an inch (2 mm) each year. If climate change results in higher global temperatures, then glaciers and ice sheets (especially in Antarctica and Greenland) could melt, dramatically increasing sea levels. With warmer temperatures, there would be the expansion of the water in the ocean, further contributing to a rise in mean sea level. Sea level rise is also known as submergence since land above current mean sea level is drowned or submerged. When the Earth enters a period of glaciation and sea levels drop, bays, gulfs, and estuaries dry up and become low-lying land. This is known as emergence when new land appears and the coastline is increased. Cite this Article
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Rosenberg, Matt. "