The Conference, a staple of the geophysical fraternity in Africa, provides a forum for engagement, idea generation and sharing.
Our venue, The Lord Charles Hotel is one of the premier conference venues in Cape Town. Conveniently situated in the Cape Winelands, just half an hour’s drive from Cape Town International Airport and the CBD, it will provide a refined and contemporary style to the 15th Conference & Exhibition.
Social media is increasingly important to science and industry, as are a range of associated networking platforms. The event will integrate online content to ensure that delegates, presenters and exhibitors are kept informed of the activities on offer, maximizing opportunities. This integration begins with the official website www.sagaconference.co.za, where further information will be made available – registrations will open soon, so ensure that you’re on the mailing list – contact us now info@sagaconference.co.za.
The conference will provide networking opportunities to the range of delegates, which will include:
Drinks and food from 5.30pm, Presentation from 6.15pm
TBD
The upcoming ASEG SA/NT Branch Technical Evening will be the 2016 Industry Night with presentations from our valued sponsors. This is a fantastic opportunity to hear about some of the projects our sponsors have undertaken over the previous year, and what they might have in store.
Title: 2016 Industry Night
When: Tuesday, October 25th , 2016 Time: Drinks and food from 5:30 pm, presentation from 6:15 pm Where: Coopers Alehouse, 316 Pulteney St, Adelaide
Cost: Members free, Non-members $10, Students $2 (No bookings required)
Please don’t miss out on this great educational and networking opportunity for student, industry, consultant, research and government geophysicists alike.
Drinks and snacks at 4:00 PM followed by a presentation at 4:30 PM
TBD
Title
Geophysical Inversion: Which Model Do You Want?
Abstract
With a broad suite of geophysical inversion tools now available, it is seductively easy to submit your data, turn the crank, and obtain a model. But is the model meaningful? Are the data properly fit? How much does the model depend on the data, and how much on parameters in the inversion code, such as model discretization and regularization penalty? The inversion process depends as much, if not more, on the error structure of the data and inversion parameters as the data themselves. We all know that geophysical inversion is non-unique, but many people are surprised just how different models can be that fit the data equally well. And what exactly constitutes an adequate fit to the data? Without a rigorous analysis of error structure, choice of misfit can be highly subjective. Some rely on “L-curves”, but it can be shown that they too are subjective and depend very much on the choice of plotting parameters. Seeking to drive misfit down as low as possible can also be perilous – the least squares best fitting models for some problems are known to be pathological, and it is likely that this is true in general. In this lecture I shall attempt to provide an understanding of the practical issues associated with geophysical inversion, and provide a roadmap for avoiding common pitfalls.
Presenter
Steven Constable studied geology at the University of Western Australia, graduating with first class honors in 1979. In 1983 he received a Ph.D. in geophysics from the Australian National University for a thesis titled “Deep Resistivity Studies of the Australian Crust” and later that year took a postdoc position at the Scripps Institution of Oceanography, University of California San Diego, where he is currently Professor of Geophysics. Steven is interested in all aspects of electrical conductivity, and has made contributions to inverse theory, electrical properties of rocks, mantle conductivity, magnetic satellite induction studies, global lightning, and instrumentation. However, his main focus is marine electromagnetism; he played a significant role in the commercialization of marine EM for hydrocarbon exploration, work that was recognized by the G.W. Hohmann Award in 2003, the 2007 SEG Distinguished Achievement Award, and now the SEG 2016 Reginald Fessenden Award. He also received the R&D 100 Award in 2010, and the AGU Bullard Lecture in 2015. More recent efforts have involved the development of equipment to map gas hydrate and permafrost. Steven has served as an associate editor for the journal Geophysics, as a section secretary and corresponding editor for the American Geophysical Union, and on the MARELEC steering committee.
Time
Drinks and snacks at 4:00 PM followed by a presentation at 4:30 PM
Date
Wednesday, 21 September 2016
Location
Sir Harold Raggatt Theatre (G.094), Geoscience Australia, Cnr Jerrabomberra Ave & Hindmarsh Drive, Symonston, ACT, 2606.
