Q. Do deep focus earthquakes occur in subduction zones?
Shallow focus earthquakes are found within the earth’s outer crustal layer, while deep focus earthquakes occur within the deeper subduction zones of the earth.
Q. Why are deep focus earthquakes concentrated in subduction zones?
Why are deep-focus earthquakes concentrated in subduction zones? An epicenter is the point on the earth’s surface that is directly about the hypocenter or focus. Deep-focus earthquakes are concentrated in subduction zones because while one plate is subducting it creates earthquakes which make deep-focus earthquakes.
Table of Contents
- Q. Do deep focus earthquakes occur in subduction zones?
- Q. Why are deep focus earthquakes concentrated in subduction zones?
- Q. How do earthquakes occur at subduction zones?
- Q. What happens before an earthquake at a subduction zone?
- Q. Is there a relationship between the depth of the earthquake and the boundary near it?
- Q. What do P and S waves do?
Q. How do earthquakes occur at subduction zones?
Why do so many earthquakes originate in this region? The belt exists along boundaries of tectonic plates, where plates of mostly oceanic crust are sinking (or subducting) beneath another plate. Earthquakes in these subduction zones are caused by slip between plates and rupture within plates.
Q. What happens before an earthquake at a subduction zone?
Before the earthquake, stresses builds up on the part of the megathrust that is ‘locked’. This also causes the overriding plate to warp in response, such that the surface of the earth goes down near the trench, and the surface of the earth goes up farther inland.
Q. Is there a relationship between the depth of the earthquake and the boundary near it?
1. It is relatively easy to see the relationships between earthquakes and the plate boundaries. Along divergent boundaries like the mid-Atlantic ridge and the East Pacific Rise, earthquakes are common, but restricted to a narrow zone close to the ridge, and consistently at less than 30 km depth.
Q. What do P and S waves do?
Usually people can only feel the bump and rattle of these waves. P waves are also known as compressional waves, because of the pushing and pulling they do. S waves move rock particles up and down, or side-to-side–perpendicular to the direction that the wave is traveling in (the direction of wave propagation).
