b'Education matters receiver function, or deep active seismicpenetration problem\x08 Dr QashqaisDr Clive Foss / Dr Jim Austin: reflection profiling to obtain additional/ presentation included both synthetic andFrom Tenterfield to Mars: complementary information on thefield data in order to demonstrate theMagnetic modelling with terrain subsurface structure, especially at middlefeasibility of this imaging technique, andhttps://www\x08youtube\x08com/and lower crustal depths where thealso to encourage further application deep seismic reflection method hasof this approach\x08 watch?v = eeUH_yYUttgThe fourth talk of 2021 was perhaps a glimpse into the future of ASEG technical meetings\x08 Dr Clive Foss and Dr Jim Austin, both from CSIRO, presented their talk as part of the NSW branchs Annual General Meeting\x08Mars lacks a core dynamo magnetic field such as we have on the Earthalthough the existing Martian magnetic field due to distributed crustal remnant magnetisation reveals that it once had a substantial field\x08 Much of the surface of Mars consists of lava flows and shield volcanoes, which on Earth tend to have reasonably consistent and homogeneous properties within individual units\x08 However, Mars lacks the air to support Slide from Dr Qashqais presentation. aeromagnetic mapping and, as a consequence, any sparse ground Dr Kate Selway: Exploringthere remain significant gaps in ourmapping of the magnetic field may need for minerals, not anomalies:interpretation of deeper geophysicalto be supplemented with low-resolution Developing quantitativedata\x08 Dr Selways talk highlighted someorbiter data\x08interpretations of MT modelsnew advances in our ability to produceDrs Foss and Austin presented a study quantitative interpretations of these https://www\x08youtube\x08com/ deeper geophysical data, with a particularusing GSNSW Tenterfield aeromagnetic watch?v = kZjjHX7BLDY focus on magnetotellurics and its jointsurvey data and terrain-bound inversion interpretation with seismics\x08 A highlightmodels in which they recovered robustExploration geophysicists are wellof Dr Selways talk was the introduction ofbulk magnetisation estimates for acquainted with making quantitativethe software package MATE, which allowsoutcropping igneous units\x08 They also interpretations of near-surfaceMT models to be interpreted in termspresented magnetic fields forward geophysical data\x08 There is a reasonableof temperature and composition\x08 Drcomputed from Martian terrain models understanding of how shallow anomaliesSelways talk concluded with a discussionof different magnetisation direction\x08 in potential field, resistivity or EM datasetsof new results from the Eastern Goldfields,The link between Tenterfield and Mars relate to mineralisation\x08 However, aswhich showed how quantitativelywas made by demonstrating that input exploration models begin to include theinterpreted MT models can feed intomagnetisation directions could be lower crust and the lithospheric mantle,improved exploration strategies\x08 recovered from models from inversion of sparse surface magnetic field data\x08 This suggests that their Tenterfield study might be a first step towards establishing a methodology for surface magnetic surveys on Mars\x08Virtual SEG DISC coming soonA SEG Distinguished Instructor Short Course 2020-2021 Survey design and seismic acquisition for land, marine, and in-between in light of new technology and techniques by Dave Monk is coming to Australia as a virtual course this year\x08 It has been postponed several times as Dave dreamed of touring Australia and visiting all the capitals of our beautiful country\x08 However, with the COVID-19 related restrictions on international Introductory slide from Dr Selways presentation. travel, the virtual course option looks 27 PREVIEW APRIL 2021'