Observed and synthetic seismic waveforms used to constrain anelastic attenuation (Q factor) of Greenland Ice Sheet

• Main Authors: Toyokuni, Genti, Komatsu, Masanao, Takenaka, Hiroshi
• Format: Dataset
• Language: unknown
• Published: Zenodo 2021
• Subjects: Q factor; Greenland Ice Sheet GrIS; 3-D modeling; finite-difference method FDM; seismic attenuation; The Greenland Ice Sheet Monitoring Network GLISN; Greenland; Ice Sheet
• Online Access: https://dx.doi.org/10.5281/zenodo.4555816; https://zenodo.org/record/4555816

These data are observed and synthetic RAW waveforms used to constrain seismic anelastic attenuation (Q factor) of the Greenland Ice Sheet (Toyokuni, Komatsu, & Takenaka, 2021, JGR). ### Observed waveforms ### ./OBS: Folder containing observed waveforms ./OBS/years_(station1)_(station2).dat: A 4.5-year averaged noise-correlated waveform propagated between (station1) and (station2). (station1) is the reference station and (station2) is the accompanying station for which the complex conjugate of the data was taken for calculations of the cross-correlation function. The format of the observed waveforms is as follows: [Lagtime (s)] [Amplitude] Please see Toyokuni et al. (2018) for details. ### Synthetic waveforms ### ./SYN: Folder containing synthetic waveforms ./SYN/Region1_QP10-QS10: Folder for Region1 and (Qp,Qs)=(10,10) ./SYN/Region1_QP20-QS20: Folder for Region1 and (Qp,Qs)=(20,20) ./SYN/Region1_QP40-QS20: Folder for Region1 and (Qp,Qs)=(40,20) ./SYN/Region1_QP50-QS50: Folder for Region1 and (Qp,Qs)=(50,50) ./SYN/Region1_QP350-QS175: Folder for Region1 and (Qp,Qs)=(350,175) ./SYN/Region2_QP10-QS10: Folder for Region2 and (Qp,Qs)=(10,10) ./SYN/Region2_QP20-QS20: Folder for Region2 and (Qp,Qs)=(20,20) ./SYN/Region2_QP40-QS20: Folder for Region2 and (Qp,Qs)=(40,20) ./SYN/Region2_QP50-QS50: Folder for Region2 and (Qp,Qs)=(50,50) ./SYN/Region2_QP350-QS175: Folder for Region2 and (Qp,Qs)=(350,175) ./SYN/Region3_QP20-QS20: Folder for Region3 and (Qp,Qs)=(20,20) The file name means the following: (Excitation point)-(Observation point).dat The format of the synthetic waveforms is as follows: [Time (s)] [X (north is positive) component] [Y (east is positive) component] [Z (vertically downward) component] In the current research, we inverted the sign of the amplitudes in the 4th column to compare with observed waveforms. We hope it is useful to you. Kind wishes, Genti Toyokuni Tohoku University, Japan E-mail: [e-mail] Reference: Toyokuni, G., Takenaka, H., Takagi, R., Kanao, M., Tsuboi, S., Tono, Y., Childs, D., & Zhao, D. (2018). Changes in Greenland ice bed conditions inferred from seismology. Physics of the Earth and Planetary Interiors, 277, 81-98. https://doi.org/10.1016/j.pepi.2017.10.010 Toyokuni, G., Komatsu, M., & Takenaka, H. (2021). Estimation of seismic attenuation of the Greenland Ice Sheet using 3-D waveform modeling. Journal of Geophysical Research: Solid Earth, under review.