b'Branch newsASEG newsabout how the challenges in Airborne EM applications vary depending on several factors, including local (hydro)geology and noise conditions. Andrea presented selected case studies from the European Union, ranging from hydrogeological to geotechnical and mineral exploration applications. Andrea also discussed the effects of anthropogenic noise and the value of airborne IP. Much discussion followed; the talk being enjoyed by all.Andrew Fitzpatrick addresses the August WA Branch Tech night meeting at the Celtic Club, West Perth.Please check the website for up-to dateEuropean Union. Andrea presented information. selected case studies from the EU, Heather Tompkinsranging from hydrogeological, to wapresident@aseg.org.augeotechnical and mineral exploration applications. Topics discussed included anthropogenic noise and airborneAndrea Viezzoli (left) and Mark Lackie (right) enjoy Induced Polarisation. the views from Club York.Australian Capital TerritoryIn mid-September the ACT BranchOur second speaker (the following ACT Branch members at Geosciencedistributed details of an annual studentWednesday) was Leonardo Vital from Australia have been very busy sinceaward for honours or postgraduatethe CSIRO and Observatrio Nacional the last edition of Preview preparingstudents studying geophysics or related(National Observatory) in Brazil. Leonardo for the AEGC conference in Perth. By allsubjects and named after the late Drpresented two mini talks entitled reports, their efforts resulted in somePeter Milligan. It is anticipated that theRadial magnetic inversion to retrieve excellent displays and presentations.successful student will deliver a talk tothe geometry of 3D source methods At the conference, two GA scientiststhe ACT Branch on their chosen subjectand Magnetic Inversionthe cost of were recipients of awards. Ross Brodie,at an award ceremony later in the year. freedom. In his first talk Leo presented from the Mineral Systems Branch, wasthe background to a new method to presented with the prestigious ASEGAn upcoming event in October is a talk torecover the geometry of a geological Grahame Sands Award (For innovation inbe presented by Clive Foss of CSIRO, onsource by the non-linear inversion of applied geophysics through a significanta topic relating to magnetic data and theits total-field anomaly. The second talk practical development of benefit toGawler Craton Airborne Survey. highlighted the work Leo had been doing Australian exploration geophysicsin constructing physical models with in the field of instrumentation, dataGrant Butlerplaster of Paris and magnetite powder, acquisition, interpretation or theory).actpresident@aseg.org.au then mapping the magnetic field at a Ross received the award for innovationlow elevation. Thus, with this well-known in applied geophysics with high impactNew South Wales dataset Leo then ran inversions using on Australian resource exploration anddifferent inversion packages to see how groundwater. In July, we held our annual dinner. Itthe different results compared. Leos talks Marina Costelloe was awarded thewas held in a restaurant by the water insparked discussion about the knowns ASEG Service Medal for her outstandingDarling Harbour; we ate lots of steak andand un-knowns of magnetic inversion.and distinguished service by a Memberother excellent food, drank lots of beers, in making major contributions to thereds and whites, and discussed many shaping and the sustaining of the Societygeophysical and non-geophysical topics. and the conduct of its affairs over manyWe had a good turnout and a great time years. Only ten distinguished ASEGwas had by all.Members have received this honour inIn August, we held two meetings due to the past 20 years, and Marina is the firstthe timely visit of a speaker on his way to woman to receive the award. the AEGC in Perth.On 15 August, prior to the AEGC, DrOur first speaker was Andrea Viezzoli Andrea Viezoli of Aarhus Geophysicsfrom Aarhus Geophysics in Denmark ApS gave an interesting talk to the ACTwho presented a talk entitled Some Branch at GA entitled Some insightinsight from Airborne EM applications from Airborne EM applications in thein the European Union. Andrea spokeClive Foss (left) and his student, Leo Vital (right)9 PREVIEW OCTOBER 2019'