Earth sciences
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Total magnetic intensity (TMI) data measures variations in the intensity of the Earth's magnetic field caused by the contrasting content of rock-forming minerals in the Earth crust. Magnetic anomalies can be either positive (field stronger than normal) or negative (field weaker) depending on the susceptibility of the rock. The data 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. These line dataset from the Murrindal, Vic, 1996 VIMP Survey (GSV3060) survey were acquired in 1995 by the VIC Government, and consisted of 15589 line-kilometres of data at 200m line spacing and 80m terrain clearance. To constrain long wavelengths in the data, an independent data set, the Australia-wide Airborne Geophysical Survey (AWAGS) airborne magnetic data, was used to control the base levels of the survey data. This survey data is essentially levelled to AWAGS.
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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 Gravity Survey 2005A7 (P200557) contains a total of 374 point data values acquired at a spacing between 500 and 1000 metres. The data is located in SA and were acquired in 2005, under project No. 200557 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 Paterson - WA Gravity Survey (P200560) contains a total of 4525 point data values acquired at a spacing between 2000 and 2500 metres. The data is located in WA and were acquired in 2005, under project No. 200560 for Geological Survey of Western Australia (GSWA); Geoscience Australia.
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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 Semi detailed Gravity Survey, SA 2005A12 (P200558) contains a total of 2009 point data values acquired at a spacing between 500 and 3100 metres. The data is located in SA and were acquired in 2005, under project No. 200558 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 Tanami Gravity along Seismic Lines 2005 (P200581) contains a total of 1806 point data values acquired at a spacing between 200 and 400 metres. The data is located in NT and were acquired in 2005, under project No. 200581 for Northern Territory of Australia (Northern Territory Geological Survey).
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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 Timber Creek Gravity Survey 2005, NT, CR20050424 (P200584) contains a total of 1096 point data values acquired at a spacing between 40 and 2000 metres. The data is located in NT and were acquired in 2005, under project No. 200584 for Orogenic 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 Gravity Survey 2005, NT, CR20050188, EL_24014 (P200583) contains a total of 96 point data values acquired at a spacing between 100 and 400 metres. The data is located in NT and were acquired in 2005, under project No. 200583 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 Gravity Traverse 2005, NT, CR20060474, Whirlwind EL10409 (P200586) contains a total of 38 point data values acquired at a spacing of 40 metres. The data is located in NT and were acquired in 2005, under project No. 200586 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 Braidwood Gravity Survey 2006 (P200620) contains a total of 917 point data values acquired at a spacing between 1000 and 2000 metres. The data is located in NSW and were acquired in 2006, under project No. 200620 for Geological Survey of New South Wales (GSNSW).
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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 Clonagh Detailed Gravity Survey, Qld, 2004, EPM14292, CR39758. (P200443) contains a total of 403 point data values acquired at a spacing between 200 and 800 metres. The data is located in QLD and were acquired in 2004, under project No. 200443 for Red Metal Ltd.