Sanjay, If you are 100% certain about your P and S picks, and If the lat/lon of your station ABI is still correct, then it must be a timing issue. Your station ABI may be suffering a timing advance or lag problem. It is not unusual for modern digitizers to lose GPS lock and drift...but it seems pretty severe from the screenshots you showed. Could there be vegetation covering the GPS antenna or some other blockage. What flavor of digitizer is ABI running?
Regards, Paul On Fri, Feb 20, 2015 at 8:11 AM, Sanjay Singh Negi <[email protected]> wrote: > Hi all, > I have a continuous time series earthquake data from a small > seismic network. All the stations were initially working very well. But in > recent, after repairing one of the seismic station ABI, the P and S phase > picks on this station shows very bad result. > When I remove this station and consider others the result are of-course > good, but I am not able to resolve why after introducing this station the > errors abruptly increase. > I am attaching the result of both, ABI station included and when not > included. > > > Kindly help me on this matter. > > [image: Inline image 2] > > [image: Inline image 3] > > Regards > > *SANJAY SINGH NEGI * > *Senior Research Fellow(SRF)* > *Wadia Institute of Himalayan Geology* > *33 - GMS Road,* > *Dehradun.* > *Mob no.- +91-9536145596 <%2B91-9536145596>* > > _______________________________________________ > seisan mailing list > [email protected] > http://mailman.uib.no/listinfo/seisan > > -- *Paul Friberg* ------------------- *CEO/Seismologist* *ISTI* == Instrumental Software Technologies, Inc. *Geophysical Services and Software*
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