b'NewsGeophysics in the surveysTable 5. Seismic reflection surveys (continued)Location Client State SurveyLineGeophoneVP/SPRecordTechnique Commentsname km interval interval lengthNorthwestGA/ NT Northwest900 10 40 20 sec 2D deepThe Northwest Northern Territory (NWNT, L214) Seismic NorthernNTGS Northerncrustal/highSurvey was designed to correlate well-characterised Territory Territory deepresolutionareas of the basin with adjacent gravity lows to the west crustal seismicvibroseisand to the complex geology of the Tanami Region to the survey seismicsouth, in order to better characterise the regional crustal survey architecture and identify concealed sedimentary basins to better understand the energy, minerals and groundwater potential across the region. Processing of these data are underway, with the raw data package available athttps://pid.geoscience.gov.au/dataset/ga/149287For more information on the EFTF OfficerMusgraveBirrindudu project please refer tohttps://www.eftf.ga.gov.au/officer-musgrave-birrinduduPedirkaGA SA Shallow~2000Varies Varies 3- 6 sec 2D shallowGA commissioned reprocessing of selected legacy 2D Basin legacy data legacy data,seismic data in the Pedirka Basin, South Australia, as part explosive,of the Exploring for the Future programme. The objective vibroseis is to produce a modern industry standard 2D land seismic reflection dataset to assist in imaging the subsurface. Reprocessing of these data is complete and the data package was available on request viahttp://pid.geoscience.gov.au/dataset/ga/146309.PedirkaGA SA,Shallow~1800Varies Varies 3-6 sec 2D shallowGA commissioned additional reprocessing of selected BasinNT legacy data legacy data,legacy 2D seismic data in the Pedirka Basin, South Phase 2 explosive,Australia and Northern Territory, as part of the Exploring vibroseis for the Future programme. The objective was to produce a modern industry standard 2D land seismic reflection dataset to assist in imaging the subsurface. Reprocessing of these data by Geofizika is complete. Data package is available on request via http://pid.geoscience.gov.au/dataset/ga/146309Table 6. Passive seismic surveys Location Client State SurveyTotal numberSpacing Technique Commentsname of stations deployedAustralia GA Various AusArray 149 temporary~200 kmBroad- bandThe survey covers all of Australia to establish a continental- scale seismic stations spacing ~18months ofmodel of lithospheric structure and serve as a background observations framework for more dense (~50 km) movable seismic arrays. Deployment of this national array was completed in Jun 2023. Data will be acquired over 12-18months.NorthernGA Qld/NT AusArray 247 broad-band50 km Broad-bandThe survey covers the area between Tanami, Tennant Creek, Australia seismic stations 1-2 yearsUluru and the WA border. The first public data release of the observations transportable array was in 2020.See: http://www.ga.gov.au/eftf/minerals/nawa/ausarrayVarious applications of AusArray data are described in the following Exploring for the Future extended abstracts:AusArray overview: http://pid.geoscience.gov.au/dataset/ga/135284Body wave tomography: http://pid.geoscience.gov.au/dataset/ga/134501Ambient noise tomography (including an updated, higher resolution model for the Tennant Creek to Mount Isa region): http://pid.geoscience.gov.au/dataset/ga/135130Northern Australia Moho: http://pid.geoscience.gov.au/dataset/ga/135179Australia GA Various AusArray,12 high- ~1000 km Broad-bandSemi-permanent seismic stations provide a back-bone for semi-sensitivity broad- 4 yearsmovable deployments and complement the Australian National permanent band seismicobservations Seismological Network (ANSN) operated by GA, ensuring continuity stations of seismic data for lithospheric imaging and quality control. Associated data can be accessed through http://www.iris.eduAusARRAYGA/ Vic AusArray21 temporary~100 km Broad-bandData acquired from the movable array sites will add to the VictoriaGSV Victoria seismic stations ~12-18monthsscientific understanding of the Earths lithosphere on the national Collaborativeof observations and regional scale. Phase 1 of the deployment (~100km) was Project undertaken in Mar 2023. Phase 2 of the deployment (~50 km) commenced Mar 2024.Table 7. Survey technical requirementsSurvey type Author Contributors GA ReleaseMagnetics, radiometrics andJames Goodwin Brian Minty, Ross Brodie, Mark Baigent, Yvette PoudjomDjomani,Mar 2023horizontal magnetic gradiometry MattHutchens with acknowledgements to Peter Milligan, Laz Katonahttp://pid.geoscience.gov.au/andMike Barlow dataset/ga/147457JUNE 2024PREVIEW 21'