This is a revised LCSN moment tensor solution for the event located 
near Ottawa, Illinois (about 70 miles SW of Chicago, Illinois),
(41.44N -88.94W, h= 5 km, NEIC) on 06/00/2004 at 06:10:51 UTC. 
Mw 4.2 and depth of 9 km were obtained from long period waves 
recorded by USNSN/CNMSN/LCSN stations. Very similar solution was also 
obtained by Prof. Bob Herrmann at St Louis University.
(URL: http://www.eas.slu.edu/Earthquake_Center/NEW/20040628/index.html)

 
Best Fitting Double-Couple:
   Mo = 2.14 (+/-0.66) E+22 Dyne-cm
   Mw = 4.19
   h  =   9 km
   Plane   Strike   Dip    Rake
    NP1      287     77       0
    NP2       17     89    -166
Principal Axes:
   Axis  Azimuth  Plunge      Value
     P       243      10  -0.10E+23
     N        21      77  -0.38E+19
     T       151       8   0.10E+23
 
Best regards,
 
Won-Young Kim
Lamont-Doherty Earth Observatory
 
 
LCSN Moment Tensor Solution
 
Event Date/Time:06/28/2004 06:10:51(Preliminary)
 
Moment Tensor: Scale = 10**23 Dyne-cm
   Component   Value
 Mxx= 0.552 Mxy=-0.806 Mxz=-0.051
 Myy=-0.544 Myz= 0.220 Mzz=-0.008



               ############              
           ###############-----          
         #################-------        
       ###################---------      
     ####################------------    
    #####################-------------   
   #####################---------------  
  ######################---------------- 
  -------##############----------------- 
 -----------------###   -----------------
 -------------------- N -----------------
 --------------------   ####-------------
 --------------------###########---------
 -------------------###############------
 -------------------##################---
  -   -------------##################### 
  - P -------------##################### 
      ------------#####################  
    --------------####################   
     ------------####################    
       ----------###########   ####      
         -------############ T ##        
           -----############             
               ############              
1