Landon J.S. Halloran

Hi. I am a geoscientist. I am interested in many aspects of hydrological sciences. My research tends towards the applied physics/math side of hydrogeology. Among other things, I develop and apply new methods for the characterisation of groundwater systems. I am currently a postdoctoral researcher in the Centre d'hydrogéologie et de géothermie at the Université de Neuchâtel in Switzerland.

PhD, UNSW, Sydney, Australia, 2016

MSc, McGill, Montréal, Canada, 2010

BSc (Hons), UVic, Victoria, Canada, 2008

This website is accessible at: ljsh.ca

You can contact me at: landon dot halloran at unine dot ch

Publication list (journal articles):

2018:

  • G.C. Rau, R.I. Acworth, L.J.S. Halloran, W.A. Timms, & M.O. Cuthbert (in revision). “Quantifying compressible groundwater storage by combining cross-hole seismic surveys and head response to atmospheric tides.”
  • A. Badin, F. Braun, L.J.S. Halloran, J. Maillard & D. Hunkeler (under review). “Modelling of C/Cl isotopic behaviour during chloroethene biotic reductive dechlorination: limitations of simplified and comprehensive models.”

2017:

  • G.C. Rau, L.J.S. Halloran, M.O. Cuthbert, M.S. Andersen, R.I. Acworth & J. Tellam (2017). “Streambed thermal signatures characterize the dynamics of surface-groundwater interactions in ephemeral channels,” Advances in Water Resources 107, 354-369. doi:10.1016/j.advwatres.2017.07.005
  • L.J.S. Halloran, M.S. Andersen & G.C. Rau (2017). “Investigation of the thermal regime and subsurface properties of a tidally-affected, variably saturated streambed,” Hydrological Processes 31:4, 2541-2555. doi:10.1002/hyp.11197 pdf
  • R.I. Acworth, G.C. Rau, L.J.S. Halloran, & W.A. Timms (2017). Vertical groundwater storage properties and changes in confinement determined using hydraulic head response to atmospheric tides,” Water Resources Research 53:4, 2984-2997. doi:10.1002/2016WR020311

2016:

  • R.I. Acworth, L.J.S. Halloran, G.C. Rau, M.O. Cuthbert & T. Bernardi (2016). “An objective frequency-domain method for quantifying confined aquifer compressible storage using Earth and atmospheric tides,” Geophysical Research Letters 43:22, 11671-11678. doi:10.1002/2016GL071328
  • L.J.S. Halloran, G.C. Rau & M.S. Andersen (2016). “Heat as a tracer to quantify processes and properties in the vadose zone: A review,” Earth-Science Reviews 159, 358-373. doi:10.1016/j.earscirev.2016.06.009 pdf
  • L.J.S. Halloran, H. Roshan, G.C. Rau, and M.S. Andersen (2016). “Calculating water saturation from passive temperature measurements in near-surface sediments: Development of a semi-analytical model,” Advances in Water Resources 89, 67-79. doi:10.1016/j.advwatres.2016.01.007 pdf
  • L.J.S. Halloran, H. Roshan, G.C. Rau, M.S. Andersen, and R.I. Acworth (2016). “Improved spatial delineation of streambed properties and water fluxes using distributed temperature sensing,” Hydrological Processes 30, 2686-2702. doi:10.1002/hyp.10806 pdf

2015:

  • G.C. Rau, M.O. Cuthbert, A.M. McCallum, L.J.S. Halloran, and M.S. Andersen (2015). “Assessing the accuracy of 1-D analytical heat tracing for estimating near-surface sediment thermal diffusivity and water flux under transient conditions,” Journal of Geophysical Research: Earth Surface 120:8, 1551–1573. doi:10.1002/2015JF003466

Pre-PhD:

  • P.C. Hines, J.C. Osler, J.G.E. Scrutton, and L.J.S. Halloran (2010). “Time-of-Flight Measurements of Acoustic Wave Speed in a Sandy Sediment at 0.6–20 kHz,” IEEE Journal of Oceanic Engineering 35:3, 502-515. doi:10.1109/JOE.2010.2054291
  • L.J.S. Halloran, S. Fostner, E. Paradis, and J.A. Behr (2009). “Specific mass shift of potassium 5P1/2 state,” Optics Communications 282:4, 554–557. doi:10.1016/j.optcom.2008.10.045
  • D. Duchesne, L. Razzari, L. Halloran, R. Morandotti, A. J. Spring Thorpe, D. N. Christodoulides, and D. J. Moss (2009). “Two-photon photodetector in a multiquantum well GaAs laser structure at 1.55μm,” Optics Express 17, 5298-5310. doi:10.1364/OE.17.005298


Conferences (presentations/posters/proceedings):

2017:

  • M.O. Cuthbert, R.I. Acworth, L.J.S. Halloran, G.C. Rau, & T.L. Bernardi, “An objective frequency domain method for subsurface characterisation using Earth and atmospheric tides,” American Geophysical Union Fall Meeting, Dec. 2017; New Orleans, USA.
  • G.C. Rau, R.I. Acworth, L.J.S. Halloran, W. Timms, M. Cuthbert, & M.A. Andersen, “Using atmospheric (and Earth) tides as a ‘natural tracer’ to hydraulically characterise groundwater systems,” Australiasian Groundwater Conference, July 2017; Sydney, Australia.
  • M.O. Cuthbert, G.C. Rau, L.J.S. Halloran, M.S. Andersen, I. Acworth, J. Tellam “A new approach to using streambed thermal signatures to charaterise spatio-temporal patterns of transitory groundwater-surface water interactions,” HydroEco 2017, June 2017; Birmingham, UK.
  • G.C. Rau, L.J.S. Halloran, M.O. Cuthbert, M.S. Andersen, R.I. Acworth & J. Tellam “Spatio-temporal characterisation of short-lived surface-groundwater interactions using streambed thermal signatures,” EGU General Assembly, April 2017; Vienna, Austria.
  • L.J.S. Halloran, “Groundwater Management in Australia: a Research Perspective,” Thai Government Federation of Industries - Water Institute for Sustainability Forum 2017, Jan. 2017; Bangkok, Thailand. Invited Keynote

2016:

  • L.J.S. Halloran, G.C. Rau, J.P. Kennedy, C.P. Li, H. Roshan, & M.S. Andersen (2016), “Applied thermal methods in unsaturated zone hydrology,” International Conference on Porous Media & First Annual Meeting of Australian Chapter of InterPore, Nov./Dec. 2016; Sydney, NSW, Australia.

2015:

  • L.J.S. Halloran, M.S. Andersen, G.C. Rau, H. Roshan, I. Acworth (2015). "Natural temperature variations and soil moisture content in the vadose zone," Australian Groundwater Conference, Nov. 2015; Canberra, ACT, Australia.
  • M.S. Andersen, H. Rutlidge, S. Eberhard, L. Halloran, B. Nielsen, G. Rau, C. Li, A. Salma, J. Chen, C. Moll, C. Murphy, M. Cuthbert, A. Baker (2015). "Mapping groundwater discharge and the role of groundwater chemistry for instream ecological processes," Australian Groundwater Conference, Nov. 2015; Canberra, ACT, Australia.
  • H. Rutlidge, M.S. Andersen, S. Eberhard, L. Halloran, B. Nielsen, G. Rau, C. Li, A. Salma, J. Chen, C. Moll, C. Murphy, M. Cuthbert, A. Baker (2015). "Organic matter content and redox chemistry at upwelling and downwelling hyporheic zones," Australian Groundwater Conference, Nov. 2015; Canberra, ACT, Australia.
  • L.J.S. Halloran, H. Roshan, G.C. Rau, M.O. Cuthbert, M.S. Andersen, I. Acworth (2015). "Soil moisture content estimation from passive temperature measurements," EGU General Assembly, April 2015; Vienna, Austria.

2014:

  • H. Rutlidge, M. Andersen, G. Rau, M. Cuthbert, P. Graham, N. Unland, H. Hofmann, B. Gilfeddder, A. Atkinson, I. Cartwright, L. Halloran, A. Baker (2014). "Use of Fluorescence in Conjunction with Radon Activity to Monitor Groundwater-Surface Water Interactions in a System Under Stress," Goldschmidt California, June 2014; Sacramento, CA, USA.

2013:

  • L.J.S. Halloran, H. Roshan, M.S. Andersen, R.I. Acworth (2013). "Passive surface water-groundwater interaction investigation with coiled distributed temperature sensing: a new analytical approach," American Geophysical Union Fall Meeting, 9-13 Dec. 2013; San Francisco, CA, USA.
  • L.J.S. Halloran, H. Roshan, G. Rau, A. McCallum, M.S. Andersen, I. Acworth (2013). "Effects of floods and groundwater pumping on hyporheic flows measured by coiled fibre-optic distributed temperature sensing," 40th International Association of Hydrogeologists Congress, 16-20 Sept. 2013; Perth, WA, Australia.
  • H. Roshan, M. Young, M.S. Andersen, L. Halloran, A.M. McCallum, G.C. Rau, R.I. Acworth (2013). "Evaluating thermal response of Fiber Optic Distributed Temperature Sensing," 40th International Association of Hydrogeologists Congress, 16-20 Sept. 2013; Perth, WA, Australia.

Pre-PhD:

  • D. Duchesne, L. Razzari, L. Halloran, M. Giguere, F. Legare, R. Morandotti, A. Springthorpe, D. Christodoulides, and D. Moss (2010). “Two-photon autocorrelation in a MQW GaAs laser at 1.55µm,” in: Progress In Electromagnetics Research Symposium, August 18–21, 2009, Moscow, Russia, pp. 308-313.
  • D. Duchesne, L. Razzari, L. Halloran, R. Morandotti, A. J. SpringThorpe, D. N. Christodoulides, and D. J. Moss (2009). “Two-Photon Detection in a MQW GaAs Laser at 1.55μm,” in: Conference on Lasers and Electro-Optics/International Quantum Electronics Conference, 31 May - 5 June 2009; Baltimore, Maryland, USA. doi:10.1364/IQEC.2009.IMH5
  • D. Duchesne, L. Razzari, L. Halloran, M. Giguere, F. Legare, R. Morandotti, A. Springthorpe, D. Christodoulides, and D. Moss, (2009). “Nonlinear Two-photon photodetection and autocorrelation in a GaAs MQW waveguide,” in: Lasers and Electro-Optics Society Annual Meeting, 4 - 8 October 2009, New York, USA, pp. 815-816.