From 1 - 10 / 7721
  • The Vlaming Sub-Basin CO2 Storage Potential Study web service includes the datasets associated with the study in the Vlaming Sub-basin, located within the southern Perth Basin about 30 km west of Perth. The data in this web service supports the results of the Geoscience Australia Record 2015/009 and appendices. The study provides an evaluation of the CO2 geological storage potential of the Vlaming Sub-basin and was part of the Australian Government's National Low Emission Coal Initiative.

  • <div>The Abbot Point to Hydrographers Passage bathymetry survey was acquired for the Australian Hydrographic Office (AHO) onboard the RV Escape during the period 6 Oct 2020 – 16 Mar 2021. This was a contracted survey conducted for the Australian Hydrographic Office by iXblue Pty Ltd as part of the Hydroscheme Industry Partnership Program. The survey area encompases a section of Two-Way Route from Abbot Point through Hydrographers Passage QLD. Bathymetry data was acquired using a Kongsberg EM 2040, and processed using QPS QINSy. The dataset was then exported as a 30m resolution, 32 bit floating point GeoTIFF grid of the survey area.</div><div>This dataset is not to be used for navigational purposes.</div>

  • Old Bar Beach on the NSW mid-coast is an erosion hotspot with chronic dune recession rates exceeding 0.5 m/yr combined with extreme storm demand events upwards of 200 m3/m. With resultant property loss, Old Bar is a focus for active shoreline management by Midcoast Council. Here we demonstrate a new approach to distinguish the erosional effects of individual storms versus clusters of storms. We modelled the observed sediment transport inside the Old Bar coastal compartment and used probabilistic modelling to quantify both shoreline recession and storm demand. The hybrid cross shore (equilibrium type) longshore morphodynamic Shoreline Evolution (EVO) model developed by WBM BMT was setup for the Old Bar coastal compartment. A suite of probabilistic synthetic time series of waves and tides were used to force the model allowing us to make robust statistical assessments of the modelled erosion. In the subsequent analysis, erosion caused by individual storms are merged into “clustered” events if accretionary beach recovery between storms was less than 50 percent. Modelling results were in line with previous studies indicating continued recessions of 0.5m/yr and 50 year storm demands that exceed 200m3/m. Preliminary analysis of storm clustering suggests that recession and storm demand for clustered events are greater than for individual storms. These findings suggest that traditional “design storm” methods based solely on the most severe individual storm event will underestimate recession and storm demand return periods. Results will aid ongoing management and planning supported by NSW Office of Environment and Heritage and Midcoast Council to better understand the nature of the coastal hazards that continue to place some beachfront properties at risk. The Old Bar study was undertaken for the Bushfire and Natural Hazards CRC project ‘Resilience to clustered disaster events on the coast - storm surge’.]

  • Categories  

    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 (P198470) contains a total of 148 point data values acquired at a spacing between 200 and 250 metres. The data is located in SA and were acquired in 1984, under project No. 198470 for None.

  • Categories  

    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 Ngalia Basin Gravity (P196838) contains a total of 325 point data values acquired at a spacing between 500 and 600 metres. The data is located in NT and were acquired in 1968, under project No. 196838 for Magellan Petroleum Australia Ltd.

  • Categories  

    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 Seismic Gravity Trav Central Eromanga Basin Trav 11 (P198211) contains a total of 359 point data values acquired at a spacing between 250 and 700 metres. The data is located in QLD and were acquired in 1982, under project No. 198211 for None.

  • Categories  

    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 Blue Mountain Gravity (P199321) contains a total of 903 point data values acquired at a spacing of 100 metres. The data is located in NSW and were acquired in 1992, under project No. 199321 for RGC Exploration Pty Ltd.

  • Categories  

    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 1998A8 (P199858) contains a total of 536 point data values acquired at a spacing between 100 and 500 metres. The data is located in SA and were acquired in 1998, under project No. 199858 for None.

  • Categories  

    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 2002A11 (P200242) contains a total of 20 point data values acquired at a spacing of 1000 metres. The data is located in SA and were acquired in 2002, under project No. 200242 for None.

  • Categories  

    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 Newman area gravity (P198447) contains a total of 138 point data values acquired at a spacing between 250 and 2250 metres. The data is located in WA and were acquired in 1984, under project No. 198447 for Multiplex.