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Why Oceans Don't Drain Into the Ground

1Introduction: The Ocean Basin as a Container2The Structure of the Seafloor3Permeability and Porosity: The Key Barriers4Hydrostatic Pressure and Equilibrium5The Continental Shelf and Slope6Submarine Groundwater Discharge (SGD)7Tectonic Subduction and Deep Water Cycling8The Global Water Cycle Balance9Common Misconceptions About Gravity and Drains10Conclusion: The Stability of Our Oceans
Introduction: The Ocean Basin as a Container

Global Topography Visualization

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Let's look at the Earth's topography from a global perspective. Notice how the land masses sit high above sea level, while the ocean floors plunge thousands of meters below. This animation highlights the average elevation of continents compared to the average depth of the oceans. The sheer volume of water fills these deep depressions, demonstrating that the ocean is not just a surface layer but a significant part of the planet's physical structure.
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A visual comparison of ocean depth versus land elevation, showing the global distribution of water and the stark contrast between continental crust and oceanic crust.

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