Thread: The benefit of filtering: With a link this time!

Started: 2007-03-26 06:17:05
Last activity: 2007-03-26 06:17:05
Topics: IRIS EPO
John or Jan Lahr
2007-03-26 06:17:05
The record from 3/25/2007 provide a good example of why I like to run
AmaSeis with a filter turned on for the helicorder display. The
resulting seismogram, with enhanced low frequency sensitivity, shows
the surface waves more clearly, while the higher frequency P waves
are still quite visible. See this page for a comparison of my record
with and without the filter turned on.

http://jclahr.com/science/psn/as1/filtering/

John


#################################/ John C. Lahr
################################/ Emeritus Seismologist
###############################/ U.S. Geological Survey
==========================/ Central Region Geologic Hazards Team
#############################//#################################
############################//##################################
PO Box 548 /###################################
Corvallis, Oregon 97339 /===============================
Phone: (541) 758-2699 /####################################
Cell: (541) 740-4844 /#####################################
Fax: (413) 658-2699 /######################################
johnjan<at>lahr.org /#######################################
http://jclahr.com/science/



07:19:42 v.22510d55