αALPHA.

The ALPHA family sensors are three component low noise feedback velocity output Broadband seismometers suitable for local, regional and teleseismic recording.

GaiaCode - ALPHA-TA120-VEL Seismometer

Next generation broadband seismometer

αALPHA-TA120-VEL

Alpha-TA120-VEL is based on orthogonal three axis low noise sensor modules with double nested feedback loop topology.

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GaiaCode - DIGITAL-ALPHA-TA120-LIGHT Seismometer

Next generation digital broadband feedback seismometer

αDIGITAL-ALPHA-TAD120-LIGHT

Digital-Alpha-TAD120-Light is a three component low noise feedback, DIGITAL OUTPUT velocity broadband seismometer designed by Dr C.M. Güralp.

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GaiaCode - ALPHA-TA120-LIGHT Seismometer

Next generation broadband seismometer

αALPHA-TA120-LIGHT

Alpha-TA120-Light is a three component low noise feedback, velocity output broadband seismometer designed by Dr C.M. Güralp.

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ALPHA-TA60-LIGHT Seismometer

Next generation broadband seismometer

αALPHA-TA60-LIGHT

Alpha-Light-TA60 is a three component low noise feedback, velocity output broadband seismometer designed by Dr C.M.

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GaiaCode POSTHOLE-DIGITAL-ALPHA-TADP120-LIGHT Seismometer

Next generation digital broadband feedback seismometer

αPOSTHOLE-DIGITAL-ALPHA-TADP120-LIGHT

Posthole-Digital-Alpha-TADP120-Light is a three component low noise feedback, DIGITAL OUTPUT velocity broadband seismometer designed to be installed in POST-HOLES.

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References

  • Ref 1 USHER, M.J., BURCH, R.F. and GURALP, C.M., “Wide-band Feedback Seismometers”, 1979. Physics of the Earth and Planetary Interiors, 18: 38-50.
  • Ref 2 M,J, USHER and C.M. Guralp, “The design of miniature wideband seismometer” Geophys. J.R. ast. Soc. (1978)-55 (605-613) ,
  • Ref 3 GURALP, C.M., “The Design of a Three-component Borehole Seismometer”, 1980. Ph.D. Thesis, Univ of Reading.
  • Ref 4 GURALP C.M. Patent Application, No: 7909579 Filed: 19th March 1979 (declaration priority from Appln No: 10279/78 Filed: 15th March 1978) “Vertical Seismometer”.
  • Ref 5 GURALP C.M. United States Patent Application Number: 4,280.206 March 1979. SEISMOMETERS.
  • Ref 6 GURALP C.M. UK Patent Application GB 2-144-287-A. July 1983 Analog-to-digital converters for Seismometers. The National Research Development Corporation (UK)
  • Ref 7 GURALP C.M. UK Patent Application No. 1900719.4; Title: Infrasound Detector [M&S-IRN.FID4315516]