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Ocean trenches form at subduction zones where one lithospheric plate is being forced down into the mantle below another. As such the shallowest earthquakes occur in close proximity to the trench and as you move further past the trench above the overlying plate, the subducting slab is at greater depth so the earthquake foci will occur at progressively greater depth with increased distance.
Wiki User
∙ 14y ago
Wiki User
∙ 14y agoYes. Earthquakes can only occur where material is colder than around 700C. At depths of 300km+, ambient mantle temperatures are greatly higher than this value, and so cold material must be brought from shallow levels quickly. Subduction zones are the only places where this is known to happen, the surface expression of which are deep sea trenches.
There are exceptions to this general rule. Deep focus earthquakes beneath Spain in the 1950s are not associated with a present day trench, but probably occurred within subducted material now not directly connected to one of the tectonic plates exposed at the surface. The same thing goes for subhorizontal streaks of earthquakes beneath Fiji, thought to occur in a stagnant slab once sourced from the now extinct Vitiaz Trench.
Wiki User
∙ 14y agoThere is a correlation between deep earthquakes and convergent plate boundaries where subduction is occurring.
Wiki User
∙ 10y agoSubduction - the vibrations comes from sudden releases in the stick-slip movements of plate on plate.
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∙ 11y agodeep focus
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∙ 13y agotrenchs
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Where do most deep-focus earthquakes occur?
At convergent plate boundaries where subduction is occurring.
4 At what type of plate boundary do you find most deep-focus earthquakes?
The most deep focused earthquakes would be found at transform boundaries. The shallow focused earthquakes would be found at Divergent boundaries. And the intermediate focused earthquakes would be found at Convergent boundaries. By: A ninth grader.
Which depth range has the most earthquakes and the fewest earthquakes?
Most earthquakes occur at a depth of between 13-18 km. This is the Brittle-Ductile Transition zone and marks the strongest part of Earth's crust. The depth of the focus can be categorized as shallow, up to 70 km below the surface, or deep which is greater than 300 km. The fewest earthquakes have a depth range greater than 70 km.
Most shallow focus earthquakes are found along?
Wherever divergent plate boundaries are
Which of the lower 48 US states is most commonly associated with earthquakes - Washington or California?
California
Where do most deep-focus earthquakes occur?
At convergent plate boundaries where subduction is occurring.
4 At what type of plate boundary do you find most deep-focus earthquakes?
The most deep focused earthquakes would be found at transform boundaries. The shallow focused earthquakes would be found at Divergent boundaries. And the intermediate focused earthquakes would be found at Convergent boundaries. By: A ninth grader.
How deep can earthquakes go down?
Most are between 1 and 10 miles deep.
What is the most common type of wave associated with major earthquakes?
swells
Which depth range has the most earthquakes and the fewest earthquakes?
Most earthquakes occur at a depth of between 13-18 km. This is the Brittle-Ductile Transition zone and marks the strongest part of Earth's crust. The depth of the focus can be categorized as shallow, up to 70 km below the surface, or deep which is greater than 300 km. The fewest earthquakes have a depth range greater than 70 km.
Does New Zealand have earthquakes?
All of New Zealand has earthquakes. Have a look for a map of NZ earthquakes 1990 - 99 on the gns.cri.nz website. Shallow earthquakes are spread indifferently throughout NZ. And these are the ones of most importance to buildings etc. Deep earthquakes have a different distribution, and are more closely associated with the descending Pacific Plate. The shallow earthquakes reflect the strains generated by the plate movement and the subsequent redistribution of strains.
Most shallow focus earthquakes are found along?
Wherever divergent plate boundaries are
Which of the lower 48 US states is most commonly associated with earthquakes - Washington or California?
California
Why do the most deep earthquakes occur at convergent boundries?
because so much pressure is produced
Why is it that earthquakes that cause the most damages have shallow focus?
they make more damage because they are close to surface.....
Where would the deepest earthquakes most likely occur?
Near to subduction zones where stresses in the subducting crustal plate can cause earthquakes with very deep hypocentres.
What region of the nation is William Faulkner most associated?
deep south
