This directry contains infrasound data recorded at the Syowa Station and Some Other Stations, Antarctica.
The infrasound and seismic waveform data are stored in WIN format(*) and SAC format(**), and each data file contains 1 hour waveform.
 *http://eoc.eri.u-tokyo.ac.jp/cgi-bin/show_man?winformat
**https://ds.iris.edu/files/sac-manual/manual/file_format.html

*
+--Syowa
|  |--win (waveforms)
|  |  |--etc
|  |  |  |--syowa_channels.tbl #win channel table file
|  |  |  +--old_syowa_channels.tbl #old channel table file
|  |  |  
|  |  |--2008
|  |  |--2009
|  |     :
|  |     :
|  |
|  |--sac (waveforms)
|  |  |--2008
|  |  |--2009
|  |     :
|  |     :
|  |
|  |--QLplots (Quick Look Images)
|     |--2008
|     |--2009
|       :
|       :
|       :
|       
+--Merged_Data 
   |--win (waveforms)
   |  |--2008
   |  |--2009
   |     :
   |     :
   |
   |--sac (waveforms)
      |--201001
        :
        :

Ref:
Ishihara, Y., Murayama, T., Yamamoto, M., Matsushima, T., Kanao, M., 2020. Infrasound observation at Japanese Antarctic Station " Syowa ": 11 years observations and results. Polar Data J. 4, 45–54.