Cascadia Subduction Zone

The Cascadia Subduction Zone, a major geological feature off the west coast of North America, is gaining increased attention due to its significant earthquake and tsunami risks.

About the Cascadia Subduction Zone:

1. Location: The Cascadia Subduction Zone (CSZ) extends from northern California to southern British Columbia, stretching along the Pacific coast.
2. Convergence:
   1. The CSZ represents an active convergent boundary where the Juan de Fuca Plate slides beneath the North American Plate.
   2. This subduction process has major implications for seismic activity in the region.

Earthquake and Tsunami Potential:

1. Seismic Hazard: The CSZ is capable of producing massive earthquakes, including those of magnitude 9.0 or greater. These earthquakes can generate tsunamis reaching heights of 30 meters or more.
2. Historical Comparison: A similar fault off Japan triggered the devastating 2011 Fukushima nuclear disaster, highlighting the potential consequences of major earthquakes in subduction zones.

What is a Strait?:

1. Definition: A strait is a narrow waterway between two landmasses that connects two larger bodies of water.
2. Examples:
   1. Bering Strait: Links the Arctic Ocean with the Bering Sea, separating Asia and North America at their closest point.
   2. Strait of Gibraltar: Connects the Mediterranean Sea with the Atlantic Ocean, located between Spain and Africa.
   3. Strait of Magellan: Links the Atlantic and Pacific oceans, located between the southern tip of South America and the islands of Tierra del Fuego.

Must Check: Best IAS Coaching In Delhi