2018
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This dataset is a compilation of photographic images taken of the National Mineral and Fossil Collection specimens
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The earthquake impact scenario outlined in this Professional Opinion was initially developed to support the Australian Vulnerability Profile (AVP) Project. The project is led by Emergency Management Australia and aims to better articulate what makes Australia vulnerable to disaster when severe-to-catastrophic natural hazards impact what Australians value. The Profile will narrate at the national level Australia’s vulnerabilities and contribute to a better understanding of where to target mitigation, develop policy and direct efforts to improve resilience. As part of the project, a number of workshops have been held with stakeholders to foster discussion amongst key government and non-government stakeholder groups and academic disciplines to inform how we strategically prepare for long-term resilience and how we can reduce and manage systematic risks. A scenario modelling a magnitude 6.5 earthquake near the Adelaide business district was developed by Geoscience Australia (GA) for use at the AVP stakeholder workshop, held in Adelaide on 23-24 November 2016. The South Australian Fire and Emergency Services Commission (SAFECOM) has subsequently made a request to use this scenario for further detailed state-based planning initiatives. This report is being prepared to support these initiatives and provide the necessary background for future reference. This report provides the: • background to why this earthquake scenario was selected; • the geological and geophysical context in which it is placed; • the historical seismicity for the area; and • a qualitative description of the estimated impact to the Adelaide region. Key assumptions and limitations in the approach are summarised below: • A rare earthquake event was selected given the premise of the AVP project (i.e. severe-to-catastrophic event). • The event was modelled using GA’s Earthquake Risk Model (EQRM). • An Exposure Report is provided based on GA’s National Exposure Information System (NEXIS). • A qualitative assessment of impact is outlined based on the estimated level of earthquake ground shaking. In summary, this potential impact could be commensurate with that experienced in Christchurch from the magnitude 6.3 22 February 2011 earthquake.
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Gravity data measures small changes in gravity due to changes in the density of rocks beneath the Earth's surface. The data collected are processed via standard methods to ensure the response recorded is that due only to the rocks in the ground. The results produce datasets that can be interpreted to reveal the geological structure of the sub-surface. The processed data is checked for quality by GA geophysicists to ensure that the final data released by GA are fit-for-purpose. This Cobar-Moree-Gwydir River Gravity (P196357) contains a total of 187 point data values acquired at a spacing of 3200 metres. The data is located in NSW and were acquired in 1963, under project No. 196357 for Department of Mines (New South Wales).
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Gravity data measures small changes in gravity due to changes in the density of rocks beneath the Earth's surface. The data collected are processed via standard methods to ensure the response recorded is that due only to the rocks in the ground. The results produce datasets that can be interpreted to reveal the geological structure of the sub-surface. The processed data is checked for quality by GA geophysicists to ensure that the final data released by GA are fit-for-purpose. This Houtman Abrolhos Islands (P196359) contains a total of 83 point data values acquired at a spacing of 1500 metres. The data is located in WA and were acquired in 1963, under project No. 196359 for Hawkestone Oil.
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Gravity data measures small changes in gravity due to changes in the density of rocks beneath the Earth's surface. The data collected are processed via standard methods to ensure the response recorded is that due only to the rocks in the ground. The results produce datasets that can be interpreted to reveal the geological structure of the sub-surface. The processed data is checked for quality by GA geophysicists to ensure that the final data released by GA are fit-for-purpose. This Lennis-Breaden Gravity (P196362) contains a total of 7250 point data values acquired at a spacing between 804 and 6436 metres. The data is located in WA and were acquired in 1965, under project No. 196362 for Hunter Oil Corporation.
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Gravity data measures small changes in gravity due to changes in the density of rocks beneath the Earth's surface. The data collected are processed via standard methods to ensure the response recorded is that due only to the rocks in the ground. The results produce datasets that can be interpreted to reveal the geological structure of the sub-surface. The processed data is checked for quality by GA geophysicists to ensure that the final data released by GA are fit-for-purpose. This Breaden Gravity (P196361) contains a total of 5969 point data values acquired at a spacing between 804 and 975 metres. The data is located in WA and were acquired in 1963, under project No. 196361 for Hunter Oil Corporation.
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Gravity data measures small changes in gravity due to changes in the density of rocks beneath the Earth's surface. The data collected are processed via standard methods to ensure the response recorded is that due only to the rocks in the ground. The results produce datasets that can be interpreted to reveal the geological structure of the sub-surface. The processed data is checked for quality by GA geophysicists to ensure that the final data released by GA are fit-for-purpose. This Lennis-Breaden Gravity (P196364) contains a total of 5089 point data values acquired at a spacing between 500 and 600 metres. The data is located in WA and were acquired in 1963, under project No. 196364 for Hunter Oil Corporation.
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Gravity data measures small changes in gravity due to changes in the density of rocks beneath the Earth's surface. The data collected are processed via standard methods to ensure the response recorded is that due only to the rocks in the ground. The results produce datasets that can be interpreted to reveal the geological structure of the sub-surface. The processed data is checked for quality by GA geophysicists to ensure that the final data released by GA are fit-for-purpose. This Cairns-Cape York-Port Moresby, Gravity (P195810) contains a total of 1 point data values acquired at a spacing of None metres. The data is located in QLD and were acquired in 1958, under project No. 195810 for None.
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Gravity data measures small changes in gravity due to changes in the density of rocks beneath the Earth's surface. The data collected are processed via standard methods to ensure the response recorded is that due only to the rocks in the ground. The results produce datasets that can be interpreted to reveal the geological structure of the sub-surface. The processed data is checked for quality by GA geophysicists to ensure that the final data released by GA are fit-for-purpose. This Pooncarie Area Gravity (P195839) contains a total of 363 point data values acquired at a spacing between 500 and 2000 metres. The data is located in NSW and were acquired in 1957, under project No. 195839 for Australian Oil and Gas Corporation (AOGC).
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Gravity data measures small changes in gravity due to changes in the density of rocks beneath the Earth's surface. The data collected are processed via standard methods to ensure the response recorded is that due only to the rocks in the ground. The results produce datasets that can be interpreted to reveal the geological structure of the sub-surface. The processed data is checked for quality by GA geophysicists to ensure that the final data released by GA are fit-for-purpose. This Alton Downs Gravity (P196240) contains a total of 3868 point data values acquired at a spacing between 804 and 6436 metres. The data is located in QLD, SA and were acquired in 1962, under project No. 196240 for Delhi Petroleum Pty Ltd.