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Mundaring Geophysical Observatory annual report 1991

Created 16/10/2025

Updated 16/10/2025

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Annual reports detailing observatory activities have been prepared up till 1990. This report covers activity for the year 1991. Basic program in geomagnetism, ionospherics and seismology continued at the Mundaring Geophysical Observatory during the period. The main instruments were an Eschenhagen normal-run magnetograph, an IPS type 4B ionosonde, a Worldwide Standard Seismograph, and a Seismic Research Observatory. Seismographs were operated at Ballidu, Coolgardie, Forrest, Kellerberrin, Kununurra, Marble Bar,Manton Dam (NT), Meekatharra, Morawa, Mundaring, Rocky Gully, Narrogin and Warburton. The observatory operated nine accelerographs in the South-west seismic zone. Another 13 accelerographs in WA are operated by the Water Authority and Telecom. The earthquake list (ML>2) shows details of 217 Western Australian earthquakes during the year. Isoseismal maps were prepared for earthquakes that occurred near Kalgoorlie, Karratha, Albany,Shay Gap and Cranbrook. A major project to determine varying responses of different sub-soil conditions to earthquake vibrations concluded in June.

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Field Value
Title Mundaring Geophysical Observatory annual report 1991
Language eng
Licence Not Specified
Landing Page https://data.gov.au/data/dataset/1871f6b5-4f75-47f5-8bc8-f09f265f1564
Contact Point
Geoscience Australia Data
clientservices@ga.gov.au
Reference Period 20/04/2018
Geospatial Coverage Australia
Data Portal Geoscience Australia

Data Source

This dataset was originally found on Geoscience Australia "Mundaring Geophysical Observatory annual report 1991". Please visit the source to access the original metadata of the dataset:
https://ecat.ga.gov.au/geonetwork/srv/eng/csw/dataset/mundaring-geophysical-observatory-annual-report-1991