b'Geophysics in the surveysNewsGeological Survey of South Australia: Goodbye cookie-cut, hello varietyThe GSSA will discontinue using theideal and we are also exploring options software that allows users to cookie-cutin this space, but for the immediate geophysical data from our state widefuture we are converting the datasets and repository of government and companyupdating each survey folder.geophysical datasets. The decision wasRevisiting the data packages also allows made due to a combination of factors, butus to reproject data into other datums the primary issue is a forthcoming changeand projections (notably GDA2020). We in the infrastructure housing the SARIGwill also include finely processed grids environment. The current Jetstreamthat were used as part of state grids, and software isnt incompatible with the newwere exploring the options to add a new servers, and the GSSA have exploredfield to each dataset: a levelled signal numerous options moving forward. field, corresponding to values in the state All geophysical data will still begrid products.accessible for free download, but theIts uncertain when the revised data clip and ship mechanism wont bepackages will be ready for public available. Users can still use the spatialconsumption, but our intention is to roll search option on SARIG to search an areathem out in 2023.and create a list of surveys in the area. The geophysical surveys can then beAs always, if you need any help downloaded as data packages via theaccessing geophysical data in South hyperlinks. Each data package consists ofAustralia, please contact customer both original data and processed data. resources at +61 8 8463 3000 orDEM.CustomerServices@sa.gov.auWhat we are calling the original data are all the survey files and reports that havePhilip Heath been delivered to the SA Government.Philip.Heath@sa.gov.auThese are usually part of mandatory annual reporting as part of an Exploration Licence, or in the case of government surveys they are what we have received from the contractor. In the case of older surveys (prior to mandatory reporting or early government surveys), original data are comprised of whatever information we can find. In the case of some historic surveys this may be nothing more than a pdf showing a scan of (say) a contour map. Most commonly and more recently we receive data as Geosoft GDB or ASEG-GDF2 format ASCII columns.Processed data consists of the files created by GSSA geophysicists from the original data. There are Intrepid datasets, ER Mapper grids, and ESRI shapefiles. These are the data formats that were delivered via our instance of Jetstream. The Jetstream software had the functionality to reproject, resample, and export to ASCII columns via SARIG.But, now that were moving away from Jetstream, we need to ensure our datasets are accessible to everyone. The GSSA has committed to creating Geosoft databases and ASEG-GDF2 formatted ASCII files to sit alongside the Intrepid datasets. While this will significantly increase the size of the data repository, it will mean theres more chance that users will have access to data that they can use. A solution that doesnt require data double-up would be DECEMBER 2022 PREVIEW 18'