THE RESULTS OF HISTORICAL SEISMOGRAMS NEW DIGITIZATION TECHNIQUE IMPLEMENTATION AT THE DATA CENTER

For the first time the IGR NNC RK has implemented a new digitization technique allowing digitizing the analogue seismograms with a good quality and saving in advanced seismic data formats. A new technique is based on a Wavetrack software developed by Novosibirsk Regional Center for Information Technologies, and on a range of additional utilities developed by the Michigan State University, USA. The digitization results were compared with NXSCAN results developed by IRIS, USA. The comparison showed some advances of a new technique, and opportunity to use jointly the records digitized by different techniques in a definite frequency range. A database of the digitized nuclear explosions seismograms was created at the moment the digitized seismograms are used for different seismic monitoring tasks.

1. Aranovich Z.I. [i dr.] Apparatura i metodika seysmometricheskikh nablyudeniy v SSSR // Moscow: Nauka. – 1974.

2. Bekbulatova D.B., Mikhaylova N.N., Sokolova I.N. Istoricheskie zapisi yadernykh vzryvov v arkhive Instituta geofizicheskikh issledovaniy // Vestnik NYaTs RK. – 2020. – Issue 3. – P. 65–72.

3. NXSCAN: Manual // IRIS. – 1992.

4. Tapley W. C., and Tull J. E. SAC–Seismic Analysis Code: User’s Manual // Lawrence Livermore National Laboratory: Revision 4. – 1992.

5. SEED Reference Manual. Version 2.4 // IRIS. – 2012. – 224 p.

6. Elektronnyy resurs: https://www.irfanview.com/main_what_is_engl.htm.