Fig. 2: Microseismic events.
From: Distributed acoustic sensing of microseismic sources and wave propagation in glaciated terrain
a Bandpass filtered seismograms (vertical seismometer record in gray and DAS record in black) of surface icequake, b stick-slip icequake, c explosion, and d rockfall. Time series in panels (a–c) were recorded at southern triangle corner (seismometer RA53 and DAS channel D620). Time series in (d) was recorded at western triangle corner (RA52 and channel D904). Note that the time axes between DAS and seismometers records in panels (a–c) were slightly shifted for illustration purposes. Filter corners are specified. For surface icequake (a), stick-slip icequake (b), and explosion (c), P-, S- and/or Rayleigh phases are indicated.
