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Mundaring Geophysical Observatory annual report 1990

Created 16/10/2025

Updated 16/10/2025

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This annual report covers activity for the year 1990. Basic program in geomagnetism, ionospherics and seismology continued at the Mundaring Geophysical Observatory during the period. The main instrument were an Eschenhagen normal-run magnetograph, an IPS type 4B ionosonde, a Worldwide Standard Seismograph, and a Seismic Research Observatory. Digital magnetic recording commenced full time from 3 July after a period of testing and calibration of an Elsec based Automatic Magnetic Observatory. Seismographs were operated at Ballidu, Coolgardie, Forrest, Kellerberrin, Kununurra, Marble Bar,Meekatharra, Morawa, Mundaring, Rocky Gully, Narrogin and Warburton. The operation of Manton Dam (NT) was taken over from the Headquarters Group on 1 August. The earthquake list (ML>2) shows details of 138 Western Australian earthquakes during the year. An isoseismal map was prepared for an earthquake that occurred near Meckering on 17 January 1990. A major project to determine varying responses of different sub-soil conditions to earthquake vibrations was undertaken during the year.

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Field Value
Title Mundaring Geophysical Observatory annual report 1990
Language eng
Licence Not Specified
Landing Page https://data.gov.au/data/dataset/071099d7-57d7-4194-8ff8-a26bffafd3aa
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 1990". 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-1990