The New Zealand seismograph network |
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| Authors: | RD Adams |
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| Institution: | Seismological Observatory, Geophysics Division, Department of Scientific and Industrial Research, Wellington, New Zealand |
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| Abstract: | The New Zealand seismograph network is one of the oldest established and most extensive in the world. From the installation of a Milne seismograph in 1900, it has now grown to consist of 36 permanent stations and two telemetered arrays. The network's stations provide for the recording of world earthquakes over an area that extends from the Pacific Islands to Antarctica, but its main emphasis is given to the study of local seismicity in New Zealand. Instrumentation varies from very low magnification instruments capable of recording the strongest earthquakes, to modern high-magnification networks, and a digitally recording Seismic Research Observatory. A set of portable recorders is also available for field studies. Present analysis procedures are being revised to take account of lateral variations in seismic velocity and attenuation. |
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