Analyse teleseismic events

• read in appropriate data window
• choose filter which provides good signal/noise ratio (WWSSN-SP)
• determine slowness and azimuth of incoming wave
  1. using manually picked first arrivals, then call Plane Wave,
  2. using first visible minimum/maximum automatically picked, then call Plane Wave or
  3. using FK algorithm.
• check resulting slowness and azimuth using the Beam option of SHM, if necessary correct phase readings
• pick first arrival phase (P, PKP) on reference station, add phase readings on other stations if desired
• calibrate slowness and azimuth if calibration vectors are available (e.g. for GRF) using menu entry Calibration
• call menu entry Locate Tele and locate event
• if depth phases are visible, pick them and determine focal depth (menu entry Depth). Relocate event (Locate Tele) with new depth.
• read maximum amplitude on first arrivals picked (WWSSN-SP simulation filter, menu entry Ampl & Period auto Peak)
• determine magnitudes mb (menu entry mb)
• reread event in a longer time window to see possible surface waves. Use only vertical component of reference station
• choose SRO-LP simulation filter, adjust cutoff time to at least 5 min.
• use menu entry Surface Ampl automatic and select window of surface wave train on vertical component to determine amplitude and period of surface waves
• determine Ms using menu entry MS Prague
• select menu entry Final Parameters to save results to file

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