• DocumentCode
    877119
  • Title

    An unattended seismological observatory

  • Author

    Reynolds, R. Stanton

  • Author_Institution
    Sandia Laboratory, Albuquerque, N. Mex.
  • Volume
    53
  • Issue
    12
  • fYear
    1965
  • Firstpage
    1890
  • Lastpage
    1899
  • Abstract
    Sandia Laboratory is developing and testing prototype equipment to continuously record outputs from three short-period and three long-period unattended seismometers for up to 120 days. Timing accuracy will be within 0.1 second throughout the record period. The system will be capable of recording a 70 decibel signal range. As much as 42 decibel attenuation can also be applied to each short-period data channel by an automatic gain control system to compensate for high levels of background noise. Concurrent with the development of the recording system, a playback system is being developed and tested which will convert the recorded data and timing signals to the standard Vela Uniform tape format. According to present schedules, the systems should be fully evaluated in the laboratory and in the field by the beginning of 1967.
  • Keywords
    Accuracy; Attenuation; Background noise; Gain control; Laboratories; Observatories; Prototypes; Seismology; Testing; Timing;
  • fLanguage
    English
  • Journal_Title
    Proceedings of the IEEE
  • Publisher
    ieee
  • ISSN
    0018-9219
  • Type

    jour

  • DOI
    10.1109/PROC.1965.4465
  • Filename
    1446395