2018
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Australia's Identified Mineral Resources is an annual nation-wide assessment of Australia's ore reserves and mineral resources.
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Australia's Identified Mineral Resources is an annual nation-wide assessment of Australia's ore reserves and mineral resources.
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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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Benthic sediment sampling of Inner Darwin Harbour (GA0358) and shallow water areas in and around Bynoe Harbour (GA0359) was undertaken between May 29 and June 19, 2017. Partners involved in the surveys included Geoscience Australia (GA), the Australian Institute of Marine Science (AIMS) and the Department of Environment and Natural Resources within the Northern Territory Government (NT DENR) (formerly the Department of Land and Resource Management (DLRM)). These surveys form part of a four year (2014-2018) science program aimed at improving knowledge about the marine environments in the regions around Darwin and Bynoe Harbour’s through the collection and collation of baseline data that will enable the creation of thematic habitat maps to underpin marine resource management decisions. This project is being led by the Northern Territory Government and is supported by the INPEX-led Ichthys LNG Project, in collaboration with - and co-investment from GA and AIMS. This dataset comprises total sediment metabolism, carbonate, organic isotope and organic and inorganic element measurements on seabed sediments.
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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 Tasmanian Gravity Data (P198851) contains a total of 1803 point data values acquired at a spacing between 500 and 1500 metres. The data is located in TAS and were acquired in 1988, under project No. 198851 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 Traverse Gravity Survey SA 88A0 (P198855) contains a total of 65 point data values acquired at a spacing of 100 metres. The data is located in SA and were acquired in 1988, under project No. 198855 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 NT Road Surveys 1987-1997 Musgrave Block (P198858) contains a total of 193 point data values acquired at a spacing of 800 metres. The data is located in NT and were acquired in 1988, under project No. 198858 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 SA Semi-Detailed Gravity Survey, 1988A3 (P198863) contains a total of 333 point data values acquired at a spacing between 400 and 4000 metres. The data is located in SA and were acquired in 1988, under project No. 198863 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 Plenty Dam, Gravity Survey NT 1988 (P198889) contains a total of 471 point data values acquired at a spacing between 200 and 500 metres. The data is located in NT and were acquired in 1988, under project No. 198889 for CRA Exploration Pty Ltd.
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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 BHP Mundi Mundi Gravity Survey (P198920) contains a total of 5878 point data values acquired at a spacing between 150 and 300 metres. The data is located in NSW and were acquired in 1989, under project No. 198920 for BHP Group Ltd.