Our Dynamic Earth: Rebound and Subsidence

It’s not only water processes that play a role in global sea level rise – ground movements can play a significant role as well. On a continental scale, Earth’s crust is still recovering from the last ice age. Around 20,000 years ago, Canada, the northeast United States, Scandinavia and other regions were weighed down by ice sheets. As these ice sheets melted and the weight on the continents eased, the land surface slowly rebounded. This rebounding process, and related subsidence, continues to alter the shape of ocean basins today.

Subsidence can also result from human activity, like resource extraction. The Mississippi River Delta, for example, is essentially drowning as sinking ground is combined with higher sea levels. NASA is studying this case with an airborne campaign designed to study how sediments are accumulating on the delta.

Music: "Patisserie Pressure" by Benjamin James Parsons [PRS]

Video credit: NASA's Goddard Space Flight Center/Scientific Visualization Studio
Katie Jepson (USRA): Lead Producer
Jacquelyn DeMink (USRA): Lead Animator
Kate Ramsayer (Telophase): Writer
Lambert Caron (JPL): Science Support
Kelly Brunt (Earth System Science Interdisciplinary Center/University of Maryland): Science Support
Michael Gleeson: Aerial Videographer
Aaron E. Lepsch (ADNET): Technical Support

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[dallasbaiton]

At least this narrative is close to and factual of what is happening and is not crying about change that will happen and will continue to happen.