Name of phase to be searched for. The phase defines travel time and slowness. In combination with the event azimuth this provides the selection criteria for the phase detection list processed.

Filter band used before phase detection. Preprocessed detection lists for three filter selections are available. Short period (WWSSN-SP), mid period (Kirnos) and long period (SRO-LP). First arrivals like P or PKP are preferably found on short period seismograms while later phases like S, SS, SKS and such are more likely detectable on mid- or langperiod traces.

Component which is searched for phases. The preprocessed detection lists are available for the three components z (vertical), r (radial) and t (transverse). In general phases with a last P leg will be found on the vertical component while phases with a last S leg will be seen on radial and transverse components.

Maximum deviation a phase detection may have compared to the theoretical slowness of the phase specified above. Please note that short period detections are computed on GRF stations which have a smaller aperture and thus a less good slowness resolution. Mid- and longperiod detections are computed using the GRSN as an array and have a higher accuracy in slowness and azimuth.

Maximum deviation a phase detection may have compared to the theoretical azimuth of the event. See remarks on accuracy at the previous slowness tolerance.

Maximum deviation a phase detection may have compared to the theoretical arrival time of the phase specified above. Please use an integer number of seconds.

The detection lists are organised in years. Specify here which year should be processed or ALL. Each year takes several minutes to be processed.

Please enter your E-mail address to receive results of this request. Required entry.

Checking this box returns a mail containing all events found matching your specifications above. The events are given as origin time, latitude, longitude, depth in km.

Giving a value larger than 0 here returns a mail with a list of times ready for data requests to be used in the web request form. The copy start time are this number of seconds earlier than the theoretical arrival time of the phase specified above at station GRA1.

After submitting the request please wait for a reply mail in your mailbox.