Solid Tidal Measurements in the New England Area of Australia

Sydenham, Peter H.; Preston, Bruce; McKNIGHT, B. W.; Limbert, A. R.; Green, R.; Brocq, K. E. Le

doi:10.1038/physci235116a0

Cited by 1 publication

(3 citation statements)

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“…A 10 m quartz tube extensometer was built in m id-1971. Tidal records were obtained (Sydenham et al 1972). This installation was intended as a research tool for investigating a method of temperature compensation using a second tube of a material having a significantly higher coefficient of thermal expansion.…”

Section: The Observatorymentioning

confidence: 99%

“…The drift rate is predictable, the noise perturbation over a day being considerably less. Since publication of the results (Sydenham et al 1972) changes have been made. A fully distributed added.…”

Section: The Observatorymentioning

confidence: 99%

“…An honours student is currently engaged on this problem. A study of microdisplacement transducers (Sydenham 1972 b)revealed that the inductive transducers already used were capable of the 10 nm resolution needed. Sets of two similar mounts will be used, measurements of their relative movement giving an indication of the merits of various types.…”

Section: The Observatorymentioning

confidence: 99%

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A Discussion on the measurement and interpretation of changes of strain in the Earth - Strain measurement in Australia with particular reference to the Cooney Observatory

Sydenham

1973

Phil. Trans. R. Soc. Lond. A

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A number of groups in Australia are concerned with Earth crustal movement measurement and interpretation. A brief description is given of their activities. Monitoring crustal movements requires methods of strain determination which have the best attainable precision and long-term stability. Paramount to improvement of the established techniques is need for a facility where the various methods can be compared in a reliable manner. The remainder of the paper describes the research programme of the Cooney Observatory (operated by the University of New England) which has a dominant theme of instrument development and verification. Rod, wire and laser strain-meters and the necessary peripheral equipment are described. Of interest is the continuing improvement of stable intermediate-length measuring bases in which a controlled temperature and pressure environment is created to eliminate the main systematic sources of instrument error during testing and calibration.

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Section: The Observatorymentioning

confidence: 99%

Section: The Observatorymentioning

confidence: 99%

Section: The Observatorymentioning

confidence: 99%

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