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Portable Broadband Seismology

Portable Broadband Seismology. Part 9: Sensor Quality Control. Jakarta, Indonesia May 11-13, 2006 Bruce Beaudoin Marcos Alvarez. Broadband Seismometers. Guralp CMG-3T. Streckeisen STS-2. Guralp CMG-3T. Orthogonal elements 2 Horizontal 1 Vertical. Guralp CMG-3T.

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Portable Broadband Seismology

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  1. Portable Broadband Seismology Part 9: Sensor Quality Control Jakarta, Indonesia May 11-13, 2006 Bruce Beaudoin Marcos Alvarez

  2. Broadband Seismometers Guralp CMG-3T Streckeisen STS-2

  3. Guralp CMG-3T Orthogonal elements 2 Horizontal 1 Vertical

  4. Guralp CMG-3T Vertical Element Pivot Horizontal Element Pivot

  5. Streikeisen STS-2

  6. Transformation Equations East North Vertical

  7. Element Contribution to Signal

  8. E N Z Z N E STS-2 Element W problem

  9. E N Z STS-2 Element V problem

  10. Obvious Problems With Time Series E N Z Ref E N Z STSA STS-2 With Bad Element V Hinge

  11. Inadequate Vault

  12. Pier Test - Simultaneous recording of - 3 CMG-40T E/W comp ‘Odd’ 40T

  13. Response to White Noise Calibration Input Amplitude ‘Odd’ 40T 40T-30sec Frequency

  14. Day 2 Day 3 STS-2 Flooded On Day 3 After Installation F 7

  15. Electronic Noise? Bad Cable? Note teleseism overwhelms the noise on day 4 F 10

  16. Unexplained Intermittent Monochromatic Noise F 12

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