Changing Sea Levels and Sedimentation
Changing Sea Levels
The sea levels globally change on a regular basis, for a wide variety of reasons. Some short-term causes include hurricanes, typhoons, underwater earthquakes, snowmelt, etc.
Seasonal weather patterns, changes in coastal and oceanic circulation, the arrival of warm ocean waters from El Niño, and other occurrences cause long-term variations.
Different Types of Sedimentation Along Seashores
The most common sediments found along shorelines include various deposits affected to some degree by the direct or indirect effects of waves, tides, and currents. These deposits vary by location, as they are affected by different sea levels and currents throughout the year.
How Changing Sea Levels Cause Differentiation in Sedimentation Along Shorelines
As sea levels change over time, oceanic currents do as well. Such currents are able to expose deposits beneath the sea floor and bring them to shorelines, and are also able to carry sedimentation from underwater deposits to newer locations along the seashore where they were not found before.
-Bethanyrl, Coach Alpert, ESS, 2nd period