Earthquakes in USA
Conterminous 48 States and Adjacent Areas
Oct. 2012 to Jan. 2016
earthquake epicenters are included, except for California where only 3.0 and larger
are represented. If all California earthquakes were to be included, there
would only be a black
patch covering most of California.
A goal for geologists has always been to develop an
understanding of where we expect earthquakes
to occur. The primary approach has been to look for patterns in the
collection of earthquake epicenters.
Since there is an obvious relationship the San Andreas fault and earthquakes, an
earthquake epicenters in straight linear pattern suggests they indicate
hidden fault. This has long been
a successful process in identifying faults hidden below the surface.
However, if you remove all of the earthquake epicenters
that lie in straight lines, you are still left with
a large number of seemingly unrelated earthquake epicenters. This study
examines those earthquake
epicenters whose locations suggest large circular patterns. This report will concentrate on just
Overview of new earthquake
patterns observed from Oct. 2012 to Jan. 2016
(note: after January 2016 most of the
circular patterns along the west coast vanished and earthquakes
tended to move towards the East. On the East coast earthquake activity
greatly slowed down.)
Earthquake data was tabulated in three month segments,
starting in October 2012 through January
2016. A statistical process was developed in order to generate the
straight blue line segments seen in the
above map; 4 or more epicenters in a straight line received a blue line.
Also to this map were blue lines
that were assigned to circular patterns.
Earthquakes have been
removed to show the resulting patterns.
The long linear strips were by
connecting 4 or more earthquakes that occurred in a straight
line. On the other hand, the circular features were determined by numbers
falling upon a circular path and these circular patterns were also assigned blue