Alexander E. Hay

EDUCATION

• BSc - University of Western Ontario
• MSc - University of Western Ontario
• PhD - University of British Columbia

PUBLICATIONS

• Guerra, M. and A.E. Hay, 2024. Field observations of the wake from a full-scale tidal turbine array, Renewable Energy, 226, 120315, https://doi.org/10.1016/j.renene.2024.120315.
• Hare, J. and A. E. Hay, 2023. On the internal velocity structure of sub-aqueous, gravity-driven granular flow: measurements using MHz frequency sound, Physics of Fluids 35(12), 123318 https://doi.org/10.1063/5.0177630 (Editor’s Pick)
• Razaz, M., L. Zedel, A. E.  Hay, and K. Kawanisi, 2022, Monitoring tidal currents and macro-turbulence in a high-flow tidal channel using an acoustic travel-time instrument, IEEE J. Oceanic Eng., 47(3), 815-832. https://doi.org/10.1109/JOE.2021.3126851
• Hare, J. and A. E. Hay, 2022. On the Concentration Dependence of Sound Attenuation in Aqueous Suspensions of Silt- and Sand-Sized Sediment: A Compilation and Analysis of the Available Data, J. Acoust. Soc. Am. Express Lett., 2, 036002 https://doi.org/10.1121/10.0009830
• Hay, A. E., M.G. Hatcher and J. E. Hughes Clarke, 2021. Underwater noise from submarine turbidity currents, J. Acoust. Soc. Am. Express Lett., 1 (7), 070801.
• Guerra, M., A. E. Hay, R. Karsten, G. Trowse, and R. A. Cheel, 2021. Turbulent flow mapping in a high-flow tidal channel using mobile acoustic Doppler current profilers, Renewable Energy, 177, 759-772, https://doi.org/10.1016/j.renene.2021.05.133
• Guest, T. and A. E. Hay, 2021. Small-scale morpho-sedimentary dynamics in the swash zone of a megatidal mixed sand-gravel beach, J. Marine Science and Engineering, 9, 413, https://doi.org/10.3390/jmse9040413
• Zedel, L., Hay, A. E., Wilson, G. W., and Hare, J., 2021. Pulse coherent Doppler profiler measurement of bedload transport. Journal of Geophysical Research: Earth Surface, 126, e2020JF005572. https://doi.org/10.1029/2020JF005572.
• Hare, J. and Alex E. Hay, 2020.  On acoustic reflection from sand-sized water-saturated granular media at MHz frequencies: Measurements, models and the role of speckle, J. Acoust. Soc. Am., 148(5), 3291-3304, https://doi.org/10.1121/10.0002657
• Hare, J. and Alex E. Hay, 2020. Phase speed in water-saturated sand and glass beads at MHz frequencies, J. Acoust. Soc. Am., 148(4), 2301-2310, https://doi.org/10.1121/10.0002250
• Guest, T. and A. E. Hay, 2019. Timescales of beach cusp evolution on a steep, megatidal, mixed sand-gravel beach, Mar. Geol., 416, https://doi.org/10.1016/j.margeo.2019.105984.
• Razaz, M., L. Zedel and A. E. Hay, 2019. SwathDopp: Multibeam pulse-coherent Doppler sonar for scanning 2-D velocity sections near the sediment-water interface, J. Atmos.  Oceanic. Technol. 36 ,2153-2169, doi: 10.1175/JTECH-D-19-0021.1
• Horwitz, R. M., Hay, A. E., Burt, W. J., Cheel, R. A., Salisbury, J., and Thomas, H., 2019.  High-frequency variability of CO2 in Grand Passage, Bay of Fundy, Nova Scotia, Biogeosciences, 16, 605-616, https://doi.org/10.5194/bg-16-605-2019.
• Chauvet, P., A. Metaxas, A. E. Hay, and M. Matabos, 2018. Annual and seasonal dynamics of deep-sea megafaunal epibenthic communities in Barkley Canyon (British Columbia, Canada): a response to climatology, surface productivity and benthic boundary layer variation, Prog. Oceanogr., 169, 89-105, doi.org/10.1016/j.pocean.2018.04.002.
• Hare, J. and A. E. Hay, 2018. Attenuation and group speed in water-saturated granular materials at MHz frequencies, J. Acoust. Soc. Am.., 143, 2744-2755; doi: 10.1121/1.5033901.
• Wilson, G. W. and A. E. Hay, 2017. Short-pulse method for acoustic backscatter amplitude calibration at MHz frequencies , J. Acoust. Soc. Am., 142(3), 1655-1662, doi: 10.1121/1.5003788.
• Wilcox, K.W., J.T. Zhang, I.M. McLeod, A.G. Gerber, T.L. Jeans, J. McMillan, A. Hay, R. Karsten, and J. Culina, 2017. Simulation of device-scale unsteady turbulent flow in the Fundy Tidal Region, J. Ocean Eng. 145C, 59-76.   https://doi.org/10.1016/j.oceaneng.2017.08.050
• Horwitz, R. and A. E. Hay, 2017. Turbulence dissipation rates from horizontal velocity profiles at mid-depth in fast tidal flows, Renewable Energy, 114,283-296, http://dx.doi.org/10.1016/j.renene.2017.03.062
• McMillan, J.M. and A.E. Hay, 2017. Spectral and structure function estimates of turbulence dissipation rates in a high flow tidal channel using broadband ADCPs, J. Atmos. Ocean. Technol., 34(1), 5-20.
• Guest, T. and A.E. Hay, 2017. Vertical structure of pore pressure under surface gravity waves on a steep, megatidal, mixed sand-gravel-cobble beach, J. Geophys. Res., 122, 153-170, doi:10.1002/2016JC012257.
• Stark, N. and A. E. Hay, 2016. Pebble and cobble transport on a steep, mega-tidal, mixed sand and gravel beach, Mar. Geol. 382, 210-223. https://doi.org/10.1016/j.margeo.2016.10.012
• Wilson, G. W. and A. E. Hay, 2016. Acoustic observations of near-bed sediment concentration and flux statistics above migrating sand dunes, Geophys. Res. Lett., 43(12), 6304-6312, 10.1002/2016GL069579.
• McMillan, J.M., A.E. Hay, R. Lueck, and F. Wolk, 2016. Rates of dissipation of turbulent kinetic energy in a high Reynolds number tidal channel, J. Atmos. Ocean. Tech., 33(4), 817-837.
• Wilson, G. W. and A. E. Hay, 2015. Measuring two-phase particle flux with a multi-frequency acoustic Doppler profiler, J. Acoust. Soc. Am., 138(6), 3811- 3819.
• Wilson, G. W. and A. E. Hay, 2015. Acoustic backscatter inversion for suspended sediment concentration and size: A new approach using statistical inverse theory, Cont. Shelf. Res., 106, 130-139.
• Wilson, G. W., A. E. Hay and A. J. Bowen, 2014. Observations of wave shear stress on a steep beach, J. Geophys. Res.,119, doi: 10.1002/2014JC010193
• Hare, J., A. E. Hay, L. Zedel and R. Cheel, 2014. Observations of the space-time structure of flow and stress over orbital-scale ripples, J. Geophys. Res.,119, doi:10.1002/2013JC009370.
• Hay, A. E., L. Zedel and N. Stark, 2014. Sediment dynamics on a steep, megatidal, mixed sand–gravel–cobble beach, Earth Surf. Dynam., 2, 443–453, doi:10.5194/esurf-2-443-2014.
• Stark, N., A. E. Hay, R. Cheel, and C. B. Lake, 2014. The impact of particle shape on the angle of internal friction and the implications for sediment dynamics at a steep, mixed sand–gravel beach, Earth Surf. Dynam., 2, 469–480, doi:10.5194/esurf-2-469-20
• Stark, N., A. E. Hay, R. Cheel, L. Zedel, and D. Barclay, 2014: Laboratory measurements of coarse sediment bedload transport velocity using a prototype wideband coherent Doppler profiler (MFDop). J. Atmos. Oceanic Technol., 31, 999–1011. 14.
• Richards, C., D. Bougault, P. S. Galbraith, A. E. Hay, and D. E. Kelley, 2013. Measurements of shoaling internal waves and turbulence in an estuary, J. Geophys. Res., 118, 273-286, doi:10.1029/2012JC008154.
• Dillon, J., L. Zedel and A. E. Hay, 2012. On the distribution of velocity measurements from pulse-to-pulse coherent Doppler sonar, IEEE J. Oceanic Eng., 37 (4), 613-625.
• Hay, A.E., L. Zedel, R. Cheel and J. Dillon, 2012c. On the vertical and temporal structure of flow and stress in the turbulent oscillatory boundary layer above evolving sand ripples: Observations using a prototype wide-band coherent Doppler profiler, Cont. Shelf. Res., 46  (Special Issue on the Application of Acoustics to Sediment Transport Processes), , pp. 31-49.
• Hay, A.E., L. Zedel, R. Cheel and J. Dillon, 2012b. Observations of the vertical structure of turbulent oscillatory boundary layers above fixed roughness using a prototype wide-band coherent Doppler profiler: 2. Turbulence and stress, J. Geophys. Res., 117, C03006, doi:10.1029/2011JC007114.
• Hay, A.E., L. Zedel, R. Cheel and J. Dillon, 2012a. Observations of the vertical structure of turbulent oscillatory boundary layers above fixed roughness using a prototype wide-band coherent Doppler profiler: 1. The oscillatory component of the flow, J. Geophys. Res., 117, C03005, doi:10.1029/2011JC007113.

AWARDS AND HONOURS

• Killam Professor of Oceanography, Dalhousie University, 2013-2018
• Excellence in Review, IEEE J. Oceanic Engineering, 34(2), 101, 2008.
• President’s Prize, Canadian Meteorological and Oceanographic Society, 2000
• Fellow, Acoustical Society of America, Elected 1994