Abstract
A Strong Motion Data Centre, for the collection, storage, distribution and preliminary analysis of accelerograms from the Australian and New Guinean regions, has recently been established at Canberra by the Australian Bureau of Mineral Resources. The work undertaken at the Centre is described and examples of the processing facilities available are given. Extensive use is made of computers in the analysis of the accelerograms and the plotting of the results. By December 1970 thirteen accelerographs had been obtained, by several institutions, for installation in the Australian and New Guinea regions and 24 accelerograms had been received at the Centre for analysis. The instruments located on unconsolidated material at Lae, Yonki and Panguna are currently producing about 5 accelerograms per year and the maximum ground acceleration recorded so far, of 0.12g, was obtained at Panguna, where the accelerograph is located on recent unconsolidated volcanic ash.
Highlights
This paper de scribe s the work whi ch has recently been carried out at the Bureau of Mineral Re source s in Canberra to establish a strong motion data centre for the Australian and New Guinean regions
At the time of writing at least 30 accelerograms have been obtained in the New Guinea region and 2k of the se have been received at the Strong Motion Data Centre Table 2 lists the details of the accelerograms received so far, and indicates the progress that has been made in the reduction and analysi s programme o All the records received have be en obtained from the Skinner-Duflou M02 accelerographs
We are perhaps fortunate In having a region of high seismicity like New Guinea readily available for the Installation of accelerographs and In a few years we m a y be able to obtain enough accelerograms to record some very 1arge ground motions
Summary
This paper de scribe s the work whi ch has recently been carried out at the Bureau of Mineral Re source s in Canberra to establish a strong motion data centre for the Australian and New Guinean regions. Considerable emphasis has be en placed by many workers in the field of earthquake engineering on the paucity of good large amplitude records of ground motion obtained from epicentral areas of damaging earthquake s. It is still very difficult to obtain good data because of the low probability of a large earthquake occurring close to an operational acce1erograph. Our aim in Canberra is to collect, in digiti sed form, a 1ibrary of accelerograms that have been obtained from the Australian and New Guinean regions. It is hoped that f rom the se results it will be possible to predict the dynami c behaviour of the ground dur ing a 1arge earthquake, and to determine more accurately the structural engineers' requirements as far as earthquake risk is concerned[0]
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Schedule a callMore From: Bulletin of the New Zealand Society for Earthquake Engineering
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