What is one of the major hazards associated with megathrust earthquakes?

One major hazard associated with megathrust earthquakes is the generation of tsunamis. These powerful earthquakes occur at subduction zones, where one tectonic plate is forced under another, often displacing large volumes of water. When the seafloor shifts abruptly, it can create massive waves that travel across oceans, leading to devastating impacts on coastal communities. The rapid onset and high energy of tsunami waves can result in significant loss of life and destruction of infrastructure.