Special Data Collection Systems (Project T/4703)
Semiannual rept. Apr-Sep 1978
TELEDYNE GEOTECH GARLAND TX
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Work performed under Project T4703, Special Data Collection Systems, is an extension of the program begun in 1973 under Contract F08606-74-C-0013. At the start of this period SDCS systems remained in operation at four sites. Two sites record short-period data on analog tape only the Rio Blanco Colo., configuration is the same except that data are also recorded on the digital recorder. At the 4th site, both short-period and long-period data from a KS36000 system are recorded on analog and digital recorders. Operations at all sites continued until late August when all except Rio Blanco were closed. Equipment was returned for refurbishing and preparation for redeployment in October, 1978. A special project to collect high-frequency data at a site near McKinney, Texas, was begun in May. In the first phase, data were collected from both the KS36000 vertical and a standard vertical instrument in the high-frequency passband. These data are being analyzed to determine whether the KS36000 operates properly at this frequency. Phase two, which began in mid-September and will continue through December, will collect one channel of high-frequency data and three channels of intermediate period data from the KS36000 to determine the potential usefulness of such seismographs in detection of events at relatively close distances up to 650 km.
- Recording and Playback Devices