Dr John Triantafilis
TriantafilisJohn
Role: 
PANGEA Executive | Senior Lecturer
Field of Research: 
Soil science, digital soil mapping, environmental geophysics
Contact details:
Phone: 
+61 2 9385 8087
Office: 

Room 639, D26 Building
UNSW, Kensington 2052

Research & Current Projects


My research interests include the development and application of ground-based Electromagnetic (EM) induction methods to generate natural resource information for improved soil and water management in irrigated cotton growing areas. In order to facilitate this research, and ensure it addresses natural resource management issues, I have actively collaborated with a number of community groups, including:

  • Macintyre River Food and Fibre,

  • Gwydir Valley Irrigators Association, Coordinating Committee of Namoi valley water users association,

  • Macquarie 2100 and

  • Darling River Food and Fibre.

The main aim of my research is focused on using geostatistical methods to supplement limited soil survey information in combination with ground-based geophysical instruments (i.e. EM) and satellite data.

Their application to produce biophysical data ( e.g. agronomy, geology, topograrphy, hydrology and climate) can be used to ascertain where soil and water salinisation may occur. At the field level I developed a Mobile Electromagnetic Sensing System (MESS) for field-scale investigations of soil salinity and irrigation efficiency assessment. At the district level (20,000-200,000 ha) I am developing EM surveys and soil sampling schemes to map groundwater recharge rate, identify deep drainage risk areas, and locate subsurface saline material. 

terraGIS

This web-based Geographic Information System (GIS) allows stake holders (e.g. cotton growers, farm managers, consultants) access to digital biophysical data collected as part of a series of Cotton Research and Development Corporation and Natural Heritage Trust projects.

See also:

terraGIS

 

Research Students


Jingyi Huang (PhD candidate)

 

Teaching


GEOS1211  Environmental Earth Science (Lecturer)

GEOS1701 Environmental Systems and Processes (Lecturer)

GEOS2721  Australian Surface Environments and Landforms (Lecturer)

GEOS3721  Australian Soil Use and Management (Course Coordinator)

 

Publications


JOURNAL AND REFEREED PAPERS

Huang, J., Scudiero, E., Bagtang, M., Corwin, D.L., Triantafilis, J., 2016. Monitoring scale-specific and temporal variation in electromagnetic conductivity images. Irrigation Science, Accepted: 11 FEB 2016.

Huang, J., Scudiero, E., Clary, W., Corwin, D.L., Triantafilis, J., 2016. Time-lapse monitoring of soil water content using electromagnetic conductivity imaging. Soil Use and ManagementSUM-2015-076.R1 In press: 9 FEB 2016.

Huang, J., Prochazka, M.J., Triantafilis, J., 2016. Irrigation salinity hazard assessment and risk mapping in the lower Macintyre Valley. Science of the Total Environment 551-552, 460-473.

Huang, J., Scudiero, E., Choo, H., Corwin, D.L., Triantafilis, J., 2016. Mapping soil moisture across an irrigated field using electromagnetic conductivity imaging. Agricultural Water Management, 163, 285-294.

Zare, E., Huang, J., Monteiro Santos, F.A., Triantafilis, J., 2015. Mapping salinity in three-dimensions using a DUALEM-421 and electromagnetic inversion software. Soil Science Society of America Journal, 79, 1729-1740.

Huang, J., Barrett-Lennard, E., Kilminster, T., Sinott, A., Triantafilis, J.,2015. An error budget for mapping field-scale soil salinity at various depths using different sources of ancillary data. Soil Science Society of America Journal,79, 1717-1728.

Miltenyi, G.P.L., Malte, M.C., Triantafilis, J., 2015. Assessing the Australian Soil Classification using cladistic analysis. Soil Research, 53: 772-785.

Huang, J., Zare, E., Malik, R.S., Triantafilis, J., 2015.An error budget for soil salinity mapping using different ancillary data. Soil Research, 53, 561-575.

Huang, J., Taghizadeh-Mehrjardi, R., Minasny, B., Triantafilis, J., 2015. Modelling soil salinity along a hill slope in Iran by inversion of EM38 data. Soil Science Society of America Journal, 79: 1142-1153.

Huang, J., Mokhtari, A., Cohen, D.R., Monteiro Santos, F.A., Triantafilis, J., 2015. Modelling soil salinity across a gilgai landscape by inversion of EM38 and EM31 data. European Journal of Soil Science, 66, 951-960.

Taghizadeh-Mehrjardi, R., Nabiollahia, K., Minasny, B., Triantafilis, J., 2015. Comparing data mining classifiers to predict spatial distribution of USDA-family soil groups in Baneh region, Iran. Geoderma, 253-254, 67-77.

Davies, G.B., Huang, J, Monteiro Santos, F.A., Triantafilis, J., 2015. Modelling coastal salinity using a DUALEM-421 and inversion software. Groundwater, 53, 424-431.

Huang, J., Subasinghe, R., Malik, R.S., Triantafilis, J., 2015. Salinity hazard and risk assessment using proximal sensed electromagnetic instruments. Computers and Electronics in Agriculture, 113, 213-224.

Huang, J., Subasinghe, R., Triantafilis, J., 2014. Mapping particle-size fractions as a composition using an additive-log ratio transformation and ancillary data. Soil Science Society of America Journal, 78, 1967-1976.

 

Goff, A., Huang, J., Wong, V., Monteiro Santos, F.A., Triantafilis, J., 2014. Electromagnetic conductivity imaging of soil salinity in an estuarine-alluvial landscape. Soil Science Society of America Journal, 78, 1686-1693.

Huang, J, Wong, V., Triantafilis, J., 2014. Mapping soil salinity and pH across an estuarine and alluvial plain using electromagnetic and digital elevation model data. Soil Use and Management, 30, 394-402.

Huang, J, Davies, G.B., Bowd, D., Monteiro Santos, F.A., Triantafilis, J., 2014. Spatial prediction of exchangeable sodium percentage at multiple depths using electromagnetic inversion modelling. Soil Use and Management, 30, 241-250.

Huang, J., Lark, R.M., Robinson, D.A.  Lebron, I., KeithA.M., Rawlins, B., Tye, A., Kuras, O., RainesM., Triantafilis, J., 2014. Scope to predict soil properties at within-field scale from small samples using proximally sensed g-ray spectrometer and EM induction data. Geoderma, 232-234, 69-80.

Huang, J, Nhan, T., Wong, V., Johnston, S., Lark, R.M., Triantafilis, J., 2014. Digital soil mapping of a coastal acid sulfate soil landscape. Soil Research, 52, 327-339.

Gooley, L., Huang, J., Page, D., Triantafilis, J., 2014. Digital soil mapping of available water content using proximal and remotely sensed data. Soil Use and Management, 30, 139-151.

Taghizadeh-Mehrjardi, R. Sarmadian, F., Minasny, B., Triantafilis, J., Omid M., 2014. Digital mapping of soil classes using decision tree and auxiliary data in the Ardakan region, Iran. Arid Lands Research and Management, 28, 147-168.

Yan, G., Shi, Z., Li, H.Y., Triantafilis, J., 2013. Application of digital soil mapping methods to identify salinity management classes in coastal lands of central China. Soil Use and Management, 29, 445-456.

Triantafilis, J., Monteiro Santos, F.A., 2013. Electromagnetic conductivity imaging (EMCI) of soil using a DUALEM-421 and inversion modelling software (EM4Soil). Geoderma, 211-212, 28-38.

Triantafilis, J., Ribeiro J, Page, D., Monteiro Santos, F.A., 2013. Inferring the location of preferential flow paths of a leachate plume using a DUALEM-421 and a quasi-3 dimensional inversion model. Vadose Zone Journal, 12, 117-125.

Minasny, B., Whelan, B.M., Triantafilis, J., McBratney, A.B., 2013. Pedometrics research in the vadose zone – Review and Perspectives. Vadose Zone Journal, 12(2).

Triantafilis, J., Terhune IV, C.H., Monteiro SantosF.A., 2013. An inversion approach to generate electromagnetic conductivity images from signal data. Environmental Modelling and Software, 43, 88-95.

Li, H.Y., Shi, Z., Webster, R., Triantafilis, J., 2013. Mapping the three-dimensional variation of soil salinity in a rice-paddy soil. Geoderma 195-196, 31-41.

Triantafilis, J., Gibbs, I.D., Earl, N.Y., 2013. Digital soil pattern recognition in the lower Namoi valley using numerical clustering of gamma-ray spectrometry data. Geoderma, 192, 407-421.

Triantafilis, J., Wong V., Monteiro Santos, F.A., Page, D., Wege, R., 2012. Modelling the electrical conductivity of hydrogeological strata using joint inversion of loop-loop electromagnetic data. Geophysics 77, WB99-107.

Woodforth, A., Triantafilis, J., Cupitt J., Malik, R.S., Geering, H., 2012. Mapping estimated deep drainage in the lower Namoi Valley using a chloride mass balance model and EM34 data. Geophysics 77, WB245-256.

Buchanan, S.M., Triantafilis, J., Odeh, I.O.A., 2012. Digital soil mapping of compositional particle-size fractions using proximal and remotely sensed ancillary data. Geophysics 77, WB201-211.

Triantafilis, J., Roe, J.A.E., Monteiro Santos, F.A., 2011. Detecting a leachate-plume in an aeolian sand landscape using a DUALEM-421 induction probe to measure electrical conductivity followed by inversion modelling. Soil Use and Management 27, 357-366.

Triantafilis, J., Monteiro Santos, F.A., 2011. Hydrostratigraphic analysis of the Darling River valley using a joint inversion of EM38 and EM34 data and a 1D spatially constrained algorithm for quasi-3D conductivity imaging. Hydrogeology Journal 19, 1053-1063.

Nelson M.A., Bishop T.F.A., Triantafilis, J., Odeh I.O.A., 2011. An error budget for different sources of error in a digital soil map. European Journal of Soil Science 62, 417–430.

Monteiro Santos, F.A., Triantafilis, J., Bruzgulis, K.E., 2011. A spatially constrained 1-d inversion algorithm for quasi-3D conductivity imaging: Application to DUALEM421 data collected in a riverine plain.Geophysics 76, B43-B53.

Monteiro Santos F.A., Triantafilis, J., Taylor R., Holladay S. and Bruzgulis K.E. 2010. Inversion of conductivity profiles from EM using full solution and a 1-D laterally constrained algorithm. Journal of Engineering and Environmental Geophysics 15, 163-174.

Triantafilis, J., Monteiro Santos, F.A., 2010. Resolving the spatial distribution of the true electrical conductivity with depth using EM38 and EM31 signal data and a laterally constrained inversion model. Australian Journal of Soil Research 48, 434-446.

Triantafilis, J., Buchanan, S.M., 2010. Mapping the spatial distribution of saline sub-surface material in the Darling River valley. Journal of Applied Geophysics 70, 144-160.

Monteiro Santos, F.A., Triantafilis, J., Bruzgulis, K.E., Roe, J.A.E., 2010. Inversion of DUALEM-421 profiling data using a 1-D laterally constrained algorithm. Vadose Zone Journal 9, 117-125.

Triantafilis, J., Monteiro Santos, F.A., 2009. 2-dimensional soil and vadose zone representation using an EM38 and EM34 and a laterally constrained inversion model.Australian Journal of Soil Research 47, 809-820.

Triantafilis, J., Lesch, S.M., Lau, K.L., Buchanan, S.M. 2009. Field level digital soil mapping of cation exchange capacity using electromagnetic induction and a hierarchical spatial regression model. Australian Journal of Soil Research 47, 651-663.

Triantafilis, J., Kerridge, B. and Buchanan, S.M. 2009. Digital soil-class mapping from proximal and remotely sensed data at the field level. Agronomy Journal 101, 841-853.

Triantafilis, J., and Buchanan, S.M. 2009. Identifying common near-surface and subsurface stratigraphic units using EM34 signal data and fuzzy k-means analysis in the Darling River valley. Australian Journal of Earth Sciences 56, 535-556.

Buchanan, S.M. and Triantafilis, J. 2009. Mapping water table depth using geophysical and environmental variables. Ground Water 46, 80-96.

Triantafilis, J., and Lesch, S.M. 2005. Mapping clay content variation using electromagnetic induction techniques. Computers and Electronics in Agriculture 46, 203-237.

Triantafilis, J., Odeh, I.O.A., Warr, B. and Ahmed, M.F. 2004. Mapping of risk in the lower Namoi valley using non-linear kriging methods. Agricultural Water Management 69, 203-229.

Triantafilis, J., Odeh, I.O.A., Jarman, A.L., Short, M., and Kokkoris, E. 2004. Estimating and mapping deep drainage risk at the district level in the lower Gwydir and Macquarie valleys, Australia. Australian Journal of Experimental Agriculture 44, 893-912.

Odeh, I.O.A., Todd, A.J. and Triantafilis, J. 2003. Spatial prediction of soil particle size fractions as compositional data. Soil Science 168, 501-515.

Triantafilis, J., Odeh, I.O.A., Minasny, B. and McBratney, A.B. 2003. Elucidation of physiographic and hydrogeological units using fuzzy k-means classification of EM34 data in the lower Namoi valley. Environmental Modelling and Software 18, 667-680.

Triantafilis, J., Huckel, A.I. and Odeh I.O.A. 2003. Field-scale assessment of deep drainage risk. Irrigation Science 21, 183-192.

Triantafilis, J., Ahmed, M.F. and Odeh, I.O.A. 2002. Application of a mobile electromagnetic sensing system (MESS) to assess cause and management of soil salinization in an irrigated cotton-growing field. Soil Use and Management 18, 330-339.

Triantafilis, J., Ward, W.T. and McBratney, A.B. 2001. Land suitability assessment in the lower Namoi valley of Australia, using a continuous model. Australian Journal of Soil Research 39, 273-290.

Triantafilis, J., Ward, W.T. Odeh, I.O.A. and McBratney, A.B. 2001. Creation and interpolation of continuous soil layer classes in the lower Namoi valley. Soil Science Society of America Journal 65, 403-413.

Triantafilis, J., Odeh I.O.A. and McBratney, A.B. 2001. Five geostatistical methods to predict soil salinity from electromagnetic induction data across irrigated cotton. Soil Science Society of America Journal 65, 869-978.

Triantafilis, J., Huckel, I.A. and Odeh I.O.A. 2001. Comparison of statistical prediction methods for estimating field-scale clay content using different combinations of ancillary variables. Soil Science 166, 415-427.

Triantafilis. J., Laslett, G.M. and McBratney, A.B.  2000.  Calibrating an electromagnetic induction instrument to measure salinity in soil under irrigated cotton.  Soil Science Society of America Journal 64, 1008-1017.

Odeh I.O.A., Todd A.J., Triantafilis, J. and McBratney, A.B.  1998.  Status and trends of soil salinity at different scales: the case of the irrigated cotton growing region of eastern Australia.  Nutrient Cycling in Agroecosystems 5, 99-107.


 
REPORTS
 
Triantafilis, J., 1996. Strategic Plan: Salinity research and management strategies for the cotton growing areas of Australia. CRC for Sustainable Cotton Production. pp. 1-25.
 
Triantafilis, J., and McBratney, A.B. 1993. Application of continuous methods of soil classification and land suitability assessment in the lower Namoi valley. CSIRO Division of Soils Divisional Report No. 121. pp 172.
 

 
WORKSHOP AND CONFERENCE PAPERS
 
Triantafilis, J., Odeh, I.O.A. Short, M. and Ahmed, M.F. 2002. Mapping deep drainage risk in the lower Gwydir and Macquarie valleys. (Ed. B.G. Sutton) Irrigation Australia Conference Proceedings: Conservation or Conflict? Darling Harbour-Sydney NSW, May 21-23. pp 322-329.
 
Triantafilis, J., Odeh, I.O.A., Huckel, A.I., Short, M. Ahmed, M.F. 2002. Mapping deep drainage risk at the field and district levels in the lower Gwydir valley. Proceedings of the 11th Australian Cotton Growers Research Association Conference: 'Field to fashion'.Brisbane, Queensland, August 13-15. pp 555-570.
 
Triantafilis, J., Ahmed M.F., Odeh, I.O.A. and Warr, B. 2002. Soil salinisation risk assessment using saline water in the lower Namoi valley. Proceedings of the 11th Australian Cotton Growers Research Association Conference: 'Field to fashion'.Brisbane, Queensland, August 13-15. pp 495-508.
 
Odeh, I.O.A., Triantafilis, J., and McBratney A.B. 2002. The Australian Cotton Soil Database: a simple database assistant for managing soil information. Proceedings of the 11th Australian Cotton Growers Research Association Conference: 'Field to fashion'.Brisbane, Queensland, August 13-15. pp 491-494.
 
Triantafilis, J., Buchanan S., Short M. and Malik, R. 2002. Measuring and mapping subsurface salinisation in the Darling River Valley . (Oral paper 1806, Symposium 34 - Salinization, water management and policy). Proceedings of the 17th World Congress of Soil Science. Bangkok, Thailand. August 15-21.
 
Triantafilis, J., Ahmed, M.F., Odeh, I.O.A. and Warr, B. 2001. Salinity risk assessment in the lower Namoi valley. Proceedings of the 5 th Annual Symposium Geospatial Information Agriculture. Australian Technology Park, Eveleigh, Sydney, July 17-19. pp 462-471.
 
Odeh, I.O.A., Triantafilis, J., McBratney, A.B. 2001. Are quantitative methods useful for regional soil inventories? Proceedings of the 5 th Annual Symposium Geospatial Information Agriculture. Australian Technology Park, Eveleigh, Sydney, July 17-19. pp 17-29.
 
Triantafilis, J., Huckel, A.I., Ahmed, M.F., McRae, M., Short, M. 2001. Understanding the salinity threat: an irrigated cotton perspective. Proceedings of the The Salinity, Land Management and New Technologies Conference/Workshop. Bendigo, Victoria, February 18-21. pp 59.
 
Triantafilis, J., Ahmed, M.F. and Huckel, A.I. 2000. Use of a Mobile EM Sensing System for improved natural resource management at the fieldscale. Proceedings of the 10th Australian Cotton Growers Research Association Conference: 'Meeting the challenge'.Brisbane, Queensland, August 16-18. pp 379-386.
 
Triantafilis, J., 2000. Use of EM instruments to describe spatial distribution of soil properties: experiences in Australian cotton fields. Proceedings 'EM38 Workshop Proceedings' International Institute for Land Reclamation and Improvement Workshop. New Delhi, India, February 4. pp 69-75.
 
Triantafilis, J., 1999. Soil salinisation: assessing the threat in irrigated areas. In SR Cattle and BH George (Eds) Describing, Analysing and Managing our soil. The University of Sydney, November 22-26. The University of Sydney and the Australian Soil Science Society Inc. (NSW Branch). pp 85-103.
 
Triantafilis, J., Huckel, A.I. 1999. Determining optimal sample spacing for electromagnetic induction measurements for estimation of clay content at the field scale. Pedometrics '99. Estimating Uncertainty in Soil Models. Proceedings of the 3 rd Conference of the Working Group on Pedometrics of the International Union of Soil Science (IUSS). The University of Sydney, September 27-29. pp 43-44.
 
Triantafilis, J., Huckel, A.I., Ahmed, M.F. and McBratney, A.B. 1999. Understanding the salinity threat in the irrigated cotton growing areas of Australia. Proceedings of The Cotton CRC Research conference. Narrabri RSL Club July 21-22. pp 66-72.
 
Triantafilis, J., and McBratney, A.B. 1998. Development of a mobile EM sensing system for soil salinity assessment in irrigated cotton fields. Proceedings of the 9th Australian Cotton Growers Research Association Conference: 'Cotton-covering our future.'Broadbeach, Queensland, August 12-14. pp 61-64.
 
Triantafilis, J., Ahmed, M.F. and McBratney, A.B. 1998. Assessing irrigation salinity threat to long-term sustainable cotton production. Proceedings of the 2nd World Cotton Research Conference. Athens, Greece, September 6-12. pp 476-479.
 
Teliatnikov, I.S., McBratney, A.B. and Triantafilis, J., 1998. Proximal sensing and reconstruction technique for use in quantitative soil survey. (Poster paper 623, Symposium 17 - Advances in soil survey using modern tools; methods and results). Proceedings of the 16 th World Congress of Soil Science. Montpellier , France , August 20-26 (CD-ROM).
 
Triantafilis, J.,, Huckel, I.A. and McBratney, A.B. 1998. Use of a Mobile EM Sensing System for salinity and deep-drainage assessment. (Oral paper 1463, Symposium 29 - Sustainability of irrigated land use systems with respect to soil salinisation; rehabilitation of salt affected soils). Proceedings of the 16 th World Congress of Soil Science. Montpellier, France, August 20-26 (CD-ROM).
 
Triantafilis, J., Huckel, A.I. and McBratney, A.B. 1998. Estimating deep drainage on the field scale using a mobile EM sensing system and sodium-SaLF. Proceedings of the9th Australian Cotton Growers Research Association Conference: 'Cotton-covering our future.' Broadbeach, Queensland, August 12-14. pp 65-70.
 
Triantafilis, J., Cupitt, J. and McBratney, A.B. 1998. Progress with recharge studies in the lower Namoi valley. Proceedings of the 9th Australian Cotton Growers Research Association Conference: 'Cotton-covering our future.' Broadbeach, Queensland, August 12-14. pp 71-78.
 
Triantafilis, J., Ahmed, MF and McBratney, A.B. 1998. Assessing sustainability and salinity threat from application of poor quality water in the lower Macintyre and Gwydir valleys. Proceedings of the 9th Australian Cotton Growers Research Association Conference: 'Cotton-covering our future.' Broadbeach, Queensland, August 12-14. pp 79-86.
 
Triantafilis, J., and McBratney, A.B. 1996. Measuring, mapping and interpreting the spatial distribution of soil salinity in the cotton growing areas of northern NSW. Proceedings of the 8th Australian Cotton Growers Research Association Conference: 'Cotton on to the future'. Broadbeach, Queensland, August 14-15. pp 425-431.
 
Triantafilis, J., McBratney, A.B. and Constable, G. 1996. Strategic Plan: salinity research and management strategies for the cotton growing areas of Australia . Proceedings of the 8th Australian Cotton Growers Research Association Conference: 'Cotton on to the future'. Broadbeach, Queensland, August 14-15. pp 421-424.
 
Triantafilis, J., and McBratney, A.B. 1994. Progress with soil salinity assessment in the lower Namoi valley. Proceedings of the 7th Australian Cotton Growers Research Association Conference: 'The fabric of success'. Broadbeach, Queensland, August 10-12. pp 389-397.
 
Triantafilis, J., and McBratney, A.B. 1994. Preliminary soil salinity assessment in the lower Namoi valley, NSW, Australia . (Poster paper, Symposium A - Impacts and hazards of salinisation on ecological environmental issues and sustainable agriculture). Transactions of the 15th World Congress of Soil Science. Acapulco, Mexico, July 10-16. Vol. 3b, pp. 334-335.
 
Triantafilis, J., and McBratney, A.B. 1993. Fuzzy soil layer, profile and suitability classification in the lower Namoi valley, New South Wales , Australia . pp. 515-517. In HJP Eijsackers and T. Hamers (Eds), Integrated Soil and Sediment Research: A Basis for Proper Protection, Selected Proceedings of the First European Conference on Integrated Research for Soil and Sediment. Protection and Remediation (EUROSOL).Maastricht, The Netherlands, September 6-12. Kluwer Academic Publishers, Dordrecht.
 
Triantafilis, J., and McBratney, A.B. 1992. Preliminary soil salinity assessment in the lower Namoi valley. Proceedings of the 6th Australian Cotton Growers Research Association Conference: 'Genes to Jeans'. Broadbeach, Queensland, August 12-14. pp 73-79.
 

 
MAGAZINE ARTICLES
 
Triantafilis, J., Buchanan, S. Short, M. and Malik R.S. 2004. Mapping subsurface saline material in the Bourke Irrigation District. The Australian Cotton Grower, Toowoomba, Queensland , Jan-Feb. pp. 58-61.
 
Triantafilis, J., Short, M. and Odeh, I.O.A. 2004. Identifying deep drainage risk areas in the lower Gwydir valley. The Australian Cotton Grower, Toowoomba, Queensland, Jan-Feb. pp. 19-22.
 
Hucke,l A.I., McRae, M.L. and Triantafilis, J. 2000. Mapping soil texture in a leaking storage. The Australian Cotton Grower, Toowoomba, Queensland, Sept-Oct. pp. 55-60.
 
Triantafilis, J., Ahmed, M.F. and Odeh, I.O.A. 2000. Potential impact of saline water application in the lower Namoi . The Australian Cotton Grower, Toowoomba , Queensland, May-Jun. pp. 74-77.
 
Triantafilis, J., and Kokkoris, E. 2000. Identifying hydrological zones in the lower Macquarie valley. The Australian Cotton Grower, Toowoomba, Queensland, Mar-Apr. pp. 74-78.
 
Triantafilis, J., 2000. Mapping using an EM34 in the lower Namoi valley. The Australian Cotton Grower, Toowoomba, Queensland, Jan-Feb. pp. 60-62.
 
Triantafilis, J., and Huckel, A.I. 1999. Estimating deep drainage at the field level. The Australian Cotton Grower, Toowoomba, Queensland, Nov-Dec. pp. 26-29
 
Triantafilis, J., and Huckel, A.I. 1999. On-the-go data collection for soil salinity assessment. The Australian Cotton Grower, Toowoomba, Queensland, Sept-Oct. pp 9-10.