What do and don't we know about megathrust earthquakes?

The video tutorial explains the nature of megathrust earthquakes, which occur at subduction zones where one tectonic plate dives beneath another. These earthquakes are among the largest globally, releasing over 60% of the total seismic energy since 1964. They typically occur along ocean shorelines but can also happen on land, such as in Nepal. Understanding when and where these earthquakes will occur is crucial for forecasting. The video also explores why some earthquakes generate tsunamis while others do not, emphasizing the importance of understanding fault materials and earthquake physics.

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