Deadly Pacific (Full Episode) | Drain the Oceans

Summary by Krater

This video examines geological evidence of massive earthquakes and tsunamis along subduction zones in the Pacific Ring of Fire, focusing on Cascadia and New Zealand.

From the video

Answers: What do scientists know about the megathrust earthquake and tsunami risks in Cascadia and New Zealand?

• subduction zones
• paleo-seismology
• tsunami risks
• seismic core sampling
• tectonic plate movements
• megathrust earthquakes
• Cascadia subduction zone
• Hikurangi subduction zone

What it concludes

• The Cascadia subduction zone is capable of generating magnitude 9.0 or higher earthquakes and huge tsunamis.
• Tree rings and core samples reveal that Cascadia and Hikurangi subduction zones have experienced repeated catastrophic megathrust earthquakes and tsunamis in the past.
• The 2016 Kaikoura earthquake in New Zealand triggered massive underwater landslides equivalent to three-quarters the size of the Grand Canyon.
• Submarine volcanoes like Oomurodashi and Nishinoshima present severe maritime safety and tsunami hazards to nearby densely populated regions.