NEHRP Clearinghouse

displaying 1 - 2 results in total 2

• Jensen, E. G.
  Filter Circuit Board for the Earthworm Seismic Data Acquisition System.
  January 2000, 22 p.
  Identifying Number(s): USGS/OFR-00-379
  Keywords: Multi-channel digitizer; Earthworm (EW) system; Specifications; Seismic networks; Schematics; Seismic waveforms; Data acquisitions; Photographs; Diagrams; Filter circuits; Processing system

• Evans, J. R.; Jensen, E. G.; Sell, R.; Stephens, C. D.; Nyman, D. J.
  Calibration of PS09, PS10, and PS11 Trans-Alaska Pipeline System Strong-Motion Instruments, with Acceleration, Velocity, and Displacement Records of the Denali Fault Earthquake, 03 November 2002.
  January 2006, 60 p.
  Identifying Number(s): USGS/OFR-2006-1028
  Keywords: ; Measuring instruments; Ground motion; Seismographs; Geologic faults; Earthquakes; Monitoring; Acceleration; Velocity; Amplifiers; Alaska