b'Data trends Data trends(AI) stream can show you how to crunchMT has matured into an exploration into an exploration model. tool and its application is discussed in Highlights from my perspective includea number of sessions. In particular, MT Alex Ips talk and workshop detailingmagician Alan Jones from Complete the extensive changes to GADDS andMT Solutions conjures a statistical the additional services that Geosciencemisfit method to solve an apparently Australia are implementing to their dataimpossible MT problem. Alans talk delivery system. Instead of downloadingshould be of interest to anyone using and merging multiple surveys, morestatistics, and is a window into the web services and functions will focus oninner workings of machine learning the data you want. Alex also referencesand inversion functions. He expands variants of the HDF5 database file formathis objective function to test fitting for working with very large geo-locatedhigh order polynomials with the datasets, such as are acquired byDurbin-Watson test statistic. The passive seismic and MT surveys, and asimprovements over Chi-squared are previously discussed in this column. demonstrated with three examples Tim Keepingincluding discerning the special Associate Editor for geophysicalDavid Pratt from Tensor Research leadscase of an usually undetectable datamanagement and analysis the minerals AI charge with two talks onthin resistive layer between two technical-standards@aseg.org.au deriving value from magnetic datasets.conductive layers.One on the holy grail of automatedThe AEGC presentations are bookended by gradient tensor depth picking, and another27 workshops that expand and expound on formation mapping by magnetics.on the conference themes. As previously AEGC 2019whats notDavid has studied, applied and furtheredmentioned, GA is offering a how-to for these techniques for over 40 years in the to enjoy? petroleum as well as minerals industries,their new data service. In addition, and so his opinions and programmes are wellon the electrical theme, Marina Costelloe respected and widely used. and other presenters from GA will spend There are many geoscientific disciplinestwo days taking you through the two large represented at AEGC 2019, and theInnovations in surface and downholescale electrical techniques and passive result is a comprehensive series of talkselectrical techniques are a major themeseismic for defining basement.that will address your next explorationin geophysical streams at this conference, decisionwherever you are at in theand it is good to see downhole loggingRanjit Shaw has a petroleum workshop exploration cycle. You can hear aboutgetting more air time across thethat looks like a great short introduction what Mark Rieuwers from SRK ConsultingGroundwater, EM and Iron Ore sessions,to probability and geostatistical aptly calls Modern Mineral Explorationincluding a presentation by Kazimierzmodelling for the uninitiated. The from every angle. For example, LouiseTrofimczyk from BHP on using NMRyoupower of geostatistics is often Schoneveld from CSIRO pinpointsmight need to book a seat for that one!overlooked amid grids and models, and indicator minerals in mineral systems,The petroleum Rock Physics session alsois usually left to mining engineers, but Kate Selway from Macquarie Universityhas presentations on methods relevant toit is an inexpensive way for explorers to talks about the appearance of mineralminerals exploration such as inverting EMvisualise general trends in an area and systems in MT, and then Joe Cucuzzawhile drilling, or creating 3D maps aroundto gauge mineral correlations.from AMIRA hypothesises about howa drill hole using new resistivity tools.early in the game you can assess if aFinally, I am particularly looking mineral system is of economic value. IfMarrying measurements taken aboveforward to Mark Jessells forum on you are starting from the beginning withthe surface of the earth with thoseuncertainty in exploration, drill your Exploration Licence, then presenterstaken from below has developed as antargeting and the QGIS open source from Geoscience Australia and mostinteresting minor theme in EM. IP has itsprogramme for using all those shape state/territory geological surveys areown session, and includes a presentationfiles government keep producing, showing off their updated digital databy former ASEG Best Presenter Regisand hearing Jim Austin from CSIRO delivery systemsdata that the variousNeroni, who is living dangerously by IPon the neglected field of minerals presenters in the Artificial Intelligencemapping pyrite around a shed. petrophysics. Whats not to enjoy?39 PREVIEW AUGUST 2019'