Report of a visit to the Borovoye Geophysical Observatory (Seismic Station BRV) in Kazakhstan

During summer, 1991, the authors visited the Borovoye Geophysical Observatory (BRV) in Northern Kazakhstan. At this site, seismic data have been recorded digitally since 1966. There is an archive (about 70 Gbytes) of both explosion and earthquake data. We describe the history of this station, the characteristics of seismic data channels (about 50) now routinely recorded, some of the routine analysis conducted at BRV, and the archive. It is possible to acquire digital data from the archive. At present, a considerable effort is needed to obtain detailed instrument responses for the many available channels. However, it appears that this effort, which we are pursuing, can be successful.