ORGANIZATION OF A SYSTEM FOR SEISMOLOGICAL AND EARTHQUAKE PREDICTION DATA COLLECTION IN ARMENIA

After the disastrous Spitak earthquake (۷ Decaember, ۱۹۸۸) the National Seismological and Earthquake Prediction observation Network was created in the NSSP under the RA Governnent. The Network consists of ۱۳۰ observation sites allowing for the round-the-clock receiving information on current seismicity (from weak to strong ones) in the territory of Armenia and adjacent countries as well as recording changes in geosphere, biosphere and atmosphere related to different geophysical, hydrodeformational, geochemical and biophysical fields.Selection of any of the observation sites first of all was realized based on special methodics accounting for geophysical, geochemical, hydrogeodynamic data. Along with this, while selecting observation sites all technical facilites for data acquisition and their transmission from the observation site to the site of data collection, the information acquisition and transmission regime with the measuring and registering cquipient settled in the point were taken into account, Seismological and earthquake prediction infornation is collected in the NSSP both in operative regime and in the regime determined by the schedule and arrangernents made with the seismological and centres of other states. It is clear that froin the point of view of organization of a seismic and earthquake prediction data acquisition system, the operative information acquisition systein examination is of special interest. As regards the data acquisition in off-line regime it is mainly realized by recording the information on magnetic or paper tapes with following storage in appropriate data banks either automatically or manually.The operating system for data acquisition in operative regime has a hierarchical structure (fig. ۱): an observation site - a Regional centre for data collection and proccessing - United centre for data collection and proccessing (NSSP, Yerevan) - international centers for information collection.The obligatory condition for the systems of data acquisition and transmission on all levels is the reliability with data transmission system dublicating supply, and in some cases the dublicating of regional data acquisition and processing centre functioning.