Hi Marchal,
 
    These earthquake are very small in magnitude, may  be the depth 
estimate is suspect.
I remember that it was difficult to determine the nature of the North  
Korean so called atomic bomb test.
There was also an article in the Scientific American a while ago about the  
detection of under ground nuclear explosions and apparently a false alarm 
was  created by a mine collapsing.
 
Unfortunately the urban noise at my site is too high to distinguish these  
latest English channel events. 
 
 
Regards Martin 





Hi Marchal,
 
    These earthquake are very small in magnitude,=
 may 
be the depth estimate is suspect.
I remember that it was difficult to determine the nature of the North=
 
Korean so called atomic bomb test.
There was also an article in the Scientific American a while ago abou=
t the 
detection of under ground nuclear explosions and apparently a false alarm=
 was 
created by a mine collapsing.
 
Unfortunately the urban noise at my site is too high to distinguish=
 these 
latest English channel events. 
 
 
Regards Martin