b'Geophysics in the surveys NewsTable 5.Seismic reflection surveys (Continued)Location Client State SurveyLineGeophoneVP/SPRecordTechnique Commentsname km interval interval lengthCentralGA Qld/ Shallow~1257 VariesVaries 3-20 sec2DGA commissioned reprocessing of selected legacy AustralianSA legacy datashallow2D seismic data in Qld and SA, as part of Exploring basins & deepfor the Future, Australias Future Energy Resources legacyProject. The objective is to produce a modern industry data,standard 2D land seismic reflection dataset to assist explosive,in imaging the subsurface. Reprocessing of these data vibroseis isunderway.AdavaleGA Qld Deep andVariesVaries3-20 sec2DGA commissioned reprocessing of selected legacy Basin shallowshallow2D seismic data in the Adavale Basin, Queensland legacy data & deepAustralia, Data driven Discoveries Initiative. The legacyobjective is to produce a modern industry standard data,2D land seismic reflection dataset to assist in imaging explosive,the subsurface. Reprocessing of the legacy data is vibroseiscomplete and the data package will be released in the second half of 2023.Table 6.Passive seismic surveys Location Client State SurveyTotal number ofSpacing Technique Commentsname stations deployedAustralia GA Various AusArray About 180~200 kmBroad- The survey covers all of Australia to establish a continental-temporal seismicspacingband ~18scale model of lithospheric structure and serve as a stations months ofbackground framework for more dense (~50 km) movable observationsseismic arrays. Deployment of this national array was completed in June 2023. Data will be acquired over12-18 months.NorthernGAQld/NTAusArrayAbout 265 broad- 50 kmBroad-bandThe survey covers the area between Tanami, Tennant Creek, Australia band seismic1-2 yearsUluru and the WA border. The first public data release of the stations observationstransportable array was in 2020.See: http://www.ga.gov.au/eftf/minerals/nawa/ausarray Various 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, higherresolution 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-sensitivity~1000 km Broad-bandSemi-permanent seismic stations provide a back-bone for semi- broad-band4 yearsmovable deployments and complement the Australian permanent seismic stations observations National Seismological Network (ANSN) operated by GA, ensuring continuity of seismic data for lithospheric imaging and quality control. Associated data can be accessed through http://www.iris.eduAusARRAYProject GA/GSV Victoria ~ 20 temporary~100 km Broad-bandData acquired from the movable array sites will add to the Victoriaseismic stations ~12-18scientific understanding of the Earths lithosphere on the Collaborative months ofnational and regional scale. Phase 1 of the deployment (~100 observations km) was undertaken in Mar 2023.Table 7.Survey technical requirementsSurvey typeAuthor ContributorsGA ReleaseMagnetics, radiometrics and horizontalJames GoodwinBrian Minty, Ross Brodie, Mark Baigent, Yvette Mar 2023 http://pid.magnetic gradiometryPoudjomDjomani, Matt Hutchens with acknowledgementsgeoscience.gov.au/dataset/to Peter Milligan, Laz Katona and Mike Barlow ga/147457Airborne Gravity and GradiometryNegin Moghaddam andJack McCubbine and Mike Barlow End 2023Mark Dransfield21 PREVIEW AUGUST 2023'