In the general area of controlled-source geophysics, Macnae has made signi?cant contributions to system, processing and interpretational design of ground, borehole and airborne electromagnetic systems. An early example of this work is the West, Macnae and Lamontagne (1984) paper in Geophysics on the development of the UTEM electromagnetic prospecting system. Subsequently Macnae participated in the development of the Spectrem and Tempest airborne EM systems, as well as consulting to the developers of the VTEM airborne system.
Chief Investigator in numerous Research grants from NSERC (Canada), CRC and ARC Programs (Australia), AMIRA International, ASEG Research Foundation and the Mining Industry.
Major current research areas: Airborne Induced Polarization (AMIRA Project P1036 and subsequent stages), EM sensor design (sponsored by AMIRA, Abitibi Geophysics & Outer-Rim), Lightning source geophysical exploration (Sponsored by ASEG Research Foundation).
Journal review work
Reviewer for numerous journals, including Geophysics, Geophysical Journal International, Geophysical Prospecting, Exploration Geophysics, Journal of Applied Geophysics, Near-surface Geophysics, Pure and Applied Geophysics, Planetary and Space Science.
Nominated as an “Outstanding Reviewer” for Geophysics, 2013 (The Leading Edge, May 2013 p. 590.).
- Professor of Geophysics, School of Applied Sciences
- Coordinator of Physics Discipline Honours program
- Lecturer in PHYS2127, PHYS2128 courses on Electromagnetics
- BSc (Math and Physics) University of the Witwatersrand
- BSc Hons (Geophysics) University of the Witwatersrand
- MSc, PhD (Physics) University of Toronto
- Field Geophysicist Geoterrex 1972-1975
- Consultant from 1977 to most major mining companies & geophysical contractors
- Research Director Lamontagne Geophysics 1981-1991
- Managing Director Lamontagne Geophysics (Australia) 1982-1992
- Professorial Fellow and Program Director CRCAMET 1992-2000.
- Member of SEG, ASEG, EAGE, KEGS
ASEG Gold Medal, 2010
Macnae was awarded in 2010 of the highest and most prestigious award of the Australian Society of Exploration Geophysicists, the Gold Medal. This was only the sixth such award in the organisation’s history, and the ?rst to a scientist not already retired or on the verge of retirement. The citation (published in Preview, 148, p4, October 2010) ended with: “It is ?tting that Jim now be recognised with the ASEG Gold Medal for exceptionally and highly signi?cant distinguished contributions to the science and practice of exploration geophysics.
- Macnae, James and Yang, Ying Ping, “An apparatus and method for detecting an object in a medium, WO02/067015; 29 August 2002
- Macnae, James, “Perfect conductor detector using airborne electromagnetic and magnetic survey”, US 60862400; 20 October, 2006
- Macnae, James and Chung, John, “Low frequency electric ?eld sensor” Australian provisional Patent 2009906283; 24 December 2009
- Chwala, A., Macnae, J. & Stolz, R, US 20090160444 Low temperature squid transient electromagnetic receiver system 06-25-2009
- Expert witness in patent cases in Australia, Canada, UK and the Netherlands.
During last 10 years Macnae has consulted to many major mining companies, including: Anglo American, BHP Billiton, Rio Tinto and Vale. Have also consulted to numerous smaller mineral explorers and airborne Geophysics contractors (Spectrem Air Services, Geotech Airborne, GPX, Aeroquest International). Finally, Macnae has consulted extensively to DSTO and CSIRO.
Developer of program EMFlow, the most used commercial software for processing airborne electromagnetic data in geophysics to produce geologically interpretable conductivity-depth images (Marketed by Pitney Bowes Business Insight, commercialised initially by Encom). Developer of real-time processing code for transformation of streamed airborne electromagnetic data to step response; implemented in 3 different commercial airborne systems.
Developer of program PhiBeta, the ?rst software tool for statistical recalibration of historic airborne electromagnetic data to achieve physical and geological consistency.
Macnae has contributed to the electronic and general design of several items of geophysical hardware, the details of which are trade secrets, including ?bre-optic data systems for borehole geophysics, geophysical electromagnetic transmitters, inductive source resistivity equipment and capacitive and charge-couped electrodes as well as the ground and borehole ARMIT sensors, as well as low-temperature SQUID sensors.
- Hennessy, L.,Macnae, J. (2018). Source-dependent bias of sferics in magnetotelluric responses In: Geophysics, 83, 161 - 171
- Macnae, J. (2017). Superparamagnetism in ground and airborne electromagnetics: Geometrical and physical controls In: Geophysics, 82, 347 - 356
- Hennessy, L.,Macnae, J. (2017). Predicting lightning sourced electromagnetic fields In: Exploration Geophysics, , 1 - 9
- Hennessy, L.,Macnae, J. (2017). Magnetotelluric distortions directly observed with lightning data In: Geophysical Journal International, 210, 1171 - 1175
- Macnae, J.,Hine, K. (2016). Comparing induced polarization responses from airborne inductive and galvanic ground systems: Lewis Ponds, New South Wales In: Geophysics, 81, B179 - B188
- Macnae, J. (2016). Fitting superparamagnetic and distributed Cole-Cole parameters to airborne electromagnetic data: A case history from Quebec In: Geophysics, 81, B211 - B220
- Macnae, J. (2016). Quantitative estimation of intrinsic induced polarization and superparamagnetic parameters from airborne electromagnetic data In: Geophysics, 81, E433 - E446
- Macnae, J. (2016). Comparing induced polarization responses from airborne inductive and galvanic ground systems: Tasmania In: Geophysics, 81, E471 - E479
- Macnae, J. (2016). Definitive superparamagnetic source identification through spatial, temporal, and amplitude analysis of airborne electromagnetic data In: Geophysical Prospecting, , 1 - 14
- Macnae, J. (2016). Fitting SPM and distributed Cole-Cole parameters to AEM data In: SEG International Exposition and 86th Annual Meeting 2016, Dallas, United States, 16-21 October 2016
- 3D Time domain EM Modeling and Inversion with Finite Volume Method. Funded by: Australian Society of Exploration Geophysicists Research Foundation Grant 2016 from (2016 to 2017)
- A compact EM transmitter for use in boreholes and for portable surface applications. Funded by: Australian Society of Exploration Geophysicists Research Foundation Grant 2015 from (2015 to 2017)
- Using lightning location networks in natural field mineral exploration. Funded by: Australian Society of Exploration Geophysicists Research Foundation from (2013 to 2016)
- Removing the effects of sensor rotation from EM measurements: a critical need for low-frequency AEM. Funded by: Australian Society of Exploration Geophysicists Research Foundation from (2011 to 2013)
- Transform of coincident loop EM data to equivalent potential field responses. Funded by: Australian Society of Exploration Geophysicists Research Foundation from (2009 to 2009)
2 PhD Current Supervisions4 PhD Completions and 2 Masters by Research Completions