Within or adjacent to faults.
Shallow focus earthquakes generally cause more damage.
Shallow focus earthquakes occur at depths of 70 km with magnitudes ranging from 1-5. Deep focus earthquakes occur at depths from 300-700 km and magnitudes from 6-10.
At divergent and transform boundaries.
Earthquakes occurring at a depth of less than 70 km are classified as 'shallow-focus' earthquakes, while those with a focal-depth between 70 and 300 km are commonly termed 'mid-focus' or 'intermediate-depth' earthquake.
shallow focus Intermediate focus Deep focus
Shallow focus earthquakes generally cause more damage.
Shallow focus earthquakes occur at depths of 70 km with magnitudes ranging from 1-5. Deep focus earthquakes occur at depths from 300-700 km and magnitudes from 6-10.
focus
At divergent and transform boundaries.
Earthquakes occurring at a depth of less than 70 km are classified as 'shallow-focus' earthquakes, while those with a focal-depth between 70 and 300 km are commonly termed 'mid-focus' or 'intermediate-depth' earthquake.
shallow focus Intermediate focus Deep focus
Wherever divergent plate boundaries are
within or adjacent to trenches
mid-ocean ridges
Shallow focus earthquakes occur at the mid ocean ridges because the thin lithosphere found there is to weak to allow a large amount of strain to build up and cause larger earthquakes.
The "epicenter"
associated with divergent ,convergent ,and transform