Earthquake data being hidden?

found some interesting data combing through old EQs in the usgs database.

here it shows all EQs at only 15km depth from 1940-1980 40 year period over 2000 events over 4.5 magnitude

[link to earthquake.usgs.gov (secure)]

notice the pattern? along every major plate boundary these 15km eqs pop off.

now look from 1980-2020 another 40 year period.

[link to earthquake.usgs.gov (secure)]

only 500 events at 4.5 magnitude at 15km depth

but notice something else very few are showing now on the plate boundaries.


the usgs used to use 33km as a default depth and later changed it to 10km.

[link to www.usgs.gov (secure)]



is the usgs and government hiding data showing the fault that runs the entire world is actually an active transform fault at 15km depth? why would they hide this data unless possibly is goes active after something triggers it.

the chan thomas adam and eve story that the cia had classified peaked my interest on EQs so i dug into the data and its very peculiar. seems to back his hypothesis that the crust destabilizes from time to time and rotates along those plate boundaries.

possibly at 15km? or 33km and thats why they went from default 33km to 10km to hide the 33km data? maybe the default 33km before it was changed to 10km was actually accurate data. the 33km depth EQ data is awfully suspect until 1978. either way i can see how 33km and 10km depths for default data might skew results but no where in my research could i find anything about a default depth ever being 15km which leads me to assume the 15km is legit depth.