Clustering ENTLN sferics to improve TGF temporal analysis

Elena Pradhan1,2, Michael S Briggs3, Matthew Stanbro2, Eric Cramer2, Stan Heckman4 and Oliver Roberts5, (1)National Space Science and Technology Center, Huntsville, AL, United States, (2)University of Alabama in Huntsville, Huntsville, AL, United States, (3)UA Huntsville, Huntsville, AL, United States, (4)Earth Networks Inc., Germantown, MD, United States, (5)Universities Space Research Association, Huntsville, AL, United States