Question

Japan sits along the Ring of Fire, a subduction zone causing high levels of volcanic and tectonic activity. The archipelagosits on or near the boundary of four tectonic plates: the Pacific, North American, Eurasian, and Filipino. As these plates push into each other, pressure builds and builds. Then, very unpredictably, that pressure releases.
What can these activities create in an ocean environment?

Answer 1

Sudden release of pressure along subduction zones under the ocean can produce powerful undersea earthquakes and volcanic eruptions that displace large volumes of water and generate tsunamis — long, fast-moving ocean waves that can inundate coastlines. Related ocean effects include submarine landslides, new seamounts or volcanic islands, hydrothermal vents, and volcanic ash or pyroclastic flows entering the sea.