18 



Symposium on Microseisms 



U.S. NAVY MICROSEISMIC RESEARCH PROJECT 



Figure 1. Microseism bearings from Guam 



asked for the difference between tropical and 

 extra-tropical storms. Van Straten replied 

 that there are not the sharp fronts in the 

 tropical storms. Deacon raised the point that 

 it is the energy in the storm that is important. 

 Bath asked if the waves differed greatly. 

 Deacon said no.) 



Deacon mentioned attempts recently made by 

 Mr. Darbyshire in his laboratory to find the 

 direction of the source of microseisms by com- 

 paring phases and amplitudes of the east-west 

 and north-south components using recordings 

 from the Galitzin seismographs at Kew made 

 available to him by the Superintendent of the 



