Data will be transmitted from each seismograph to a satellite and then to Australia where it is collated and transmitted back to New Zealand via the same satellite. In addition to the new satellite system, the Institute is also modernising its earthquake measuring equipment throughout New Zealand. Dr Falconer said the Institute had selected an American-made seismograph to replace its network of ageing instruments. About a year had been spent evaluating six different makes from around the world before the American model had been chosen as the most suitable for New Zealand conditions. The new instruments, about the size of a large suit case, are being housed in newly-built sheds with a concrete floor.
Site selection is crucial.
The instruments need to be on solid rock to ensure accurate recordings of seismic waves.