I suggest to test with a bit longer time window and different filters. Use a good event where you know the location. Are you sure the sensor orientation is ok? You can test that by using a distant event, usually gives a stable azimuth. Jens
-------- Original message -------- From: sachin khupat <[email protected]> Date:04/03/2015 09:40 (GMT+01:00) To: [email protected] Subject: [seisan] Event location using 3 Component Single Station data Sir We are getting data from hydro projects but due to various problem (mainly power problem) out of three observatories only two are working sometimes only one. For locating the event I am following the azimuth distance method. For that I am identifying the event and picking the P-wave arrival on vertical component and S-Wave arrival on horizontal component. Then for azimuth i pick the starting of first half cycle of P-wave doing so I am getting correction factor valves between the range 0.6 to 0.9 sometimes 1. Doing so the latitude and longitude I am getting for most the events are not matching with ISC locations of the same event.( getting difference upto 1° ). Sir my doubt is 1. Whether I can use 3-component single station data for locating the event? 2. If so, what are the necessary parameter to be used for epicenter location? 3. What is the best possible solution for obtaining the location using single/double station data ? Sir please give detail solution for the said problem. Regards Sachin _______________________________________________ seisan mailing list [email protected] http://mailman.uib.no/listinfo/seisan
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