b'Geophysics in the surveysNews(AEM) data over four blocks within thesoutheast corner of the NT adjacent to Cobar- Yathong areas of NSW. These datathe Queensland and South Australian have been acquired to help increaseborders. The survey is helicopter assisted New South Wales resilience to droughtand is acquiring gravity data on a 4 x and provide geoscientific information4 km grid over an area of 61 370 km2, on critical minerals, which will drivewith infill in selected areas at 2 km investment and help meet the surgingspacing. A minimum of 11 400 gravity global demand. Notably, data was acquiredstations are to be acquired. This survey over the Warrumbungle Caldera in theforms part of the NTGSs Resourcing the Warrumbungle National Park with the aimTerritory Initiative, which aims to support of locating groundwater to support theresource exploration in the NT. Current national park in times of drought. gravity coverage in the Pedirka survey area is of an age and density unsuitable Additionally, acquisition of thefor the goals of this project.Yathong region airborne magnetic and radiometric (AMR) survey is currentlyFor further information on these underway and will be completed bysurveys, please contact Tania Dhu, the end of spring. Acquisition is alongSenior GeophysicistNorthern Territory eastwest lines spaced 200 m apart andGeological Survey, at Tania.Dhu@nt.gov.au.northsouth lines spaced 2 km apart, and this survey is being acquired to expandGeodetic gravimetry data portalknowledge of the geology and potential Figure 2.Map of survey area. The route takendeep groundwater resources in the area. As part of the AuScope Geodetic Gravity is indicated by the yellow lines, with the red marksProject, Geoscience Australia (GA) have new benchmark locations. For further information on these surveys,released a new portal to ensure gravity please contact Astrid Carlton, Seniordata from the joint GA and Australian Forbes-Dubbo and Yathong airborneGeophysicist - Geological Survey of NSW,National University project is FAIR electromagnetic surveys (AEM) andat astrid.carlton@regional.nsw.gov.au. (Findable, Accessible, Interoperable and Yathong airborne magnetic andReusable). The data provided through this radiometric (AMR) survey NTGS Pedirka ground gravity survey portal allows academia (predominately geodesists and geophysicists) to Geoscience Australia (GA), in collaborationGeoscience Australia (GA), inimprove their understanding of temporal with the Geological Survey of NSW, havecollaboration with the Northern Territorydeformation of the Earths surface and recently completed the acquisition of overGeological Survey (NTGS), has recentlymass-density changes beneath. The 15 000 line km of airborne electromagneticbegun acquiring ground gravity in theportal helps users access and visualise Figure 3.Location of the Yathong (left) and Forbes-Dubbo (centre) AEM surveys, and the Yathong Airborne Magnetic and Radiometric Survey (right).17 PREVIEW AUGUST 2023'