Alex Hay - Selected Recent Publications

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.

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.

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.

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.

Dillon, J., L. Zedel and A. E. Hay, 2011. Simultaneous velocity ambiguity resolution and noise suppression for multi-frequency coherent Doppler sonar, J. Atmos. Ocean. Tech., 28, doi: 10.1175/JTECH-D-10-05002.1.

Mulligan, R.P., W. Perrie, B. Toulany, P.C. Smith, A.E. Hay, and A.J. Bowen, 2011. An operational coastal wave nowcast and forecast system. Atmosphere-Ocean, 49(1), 1-7 doi:10.1080/07055900.2011.558468.

Alcinov, T. and A.E. Hay, 2011. Oblique long wavelength ripples in nearshore sands, J. Geophys. Res., submitted Oct 2011.

Hay, A.E., L. Zedel, R. Cheel and J. Dillon, 2012c., On the vertical and temporal structure of flow and stress within the turbulent oscillatory boundary layer above evolving sand ripples: Observations using a prototype wide-band coherent Doppler profiler, Continental Shelf Research 46, 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.

Dillon, J. , L. Zedel and A. E. Hay, 2011. Simultaneous velocity ambiguity resolution and noise suppression for multi-frequency coherent Doppler sonar, J. Atmos. Ocean. Tech., 28, doi: 10.1175/JTECH-D-10-05002.1.

Dillon, J. , L. Zedel and A. E. Hay, 2011. Asymptotic properties of an autocorrelation coefficient for coherent Doppler sonar, J. Atmos. Ocean. Tech 28(7), 966-973.

Hay, A. E., 2011. Geometric bed roughness and the bed state storm cycle, J. Geophys. Res., 116, C04017, doi:10.1029/2010JC006687.

Zedel, L.,and A.E. Hay, 2010. Resolving velocity ambiguity in multi-frequency, pulse-to-pulse coherent Doppler sonar, IEEE J. Oceanic Eng. 35(4), 847-851.

Mulligan, R., A.E. Hay and A. J. Bowen, 2010. A wave-driven jet over a rocky shoal. JGR-Oceans, 115, C10038, doi:10.1029/2009JC006027.

Rennie, C.D. and A. E. Hay, 2010. Reynolds stress estimates in a tidal channel from phase-wrapped ADV data. J. Coastal Res., 26 (10), 157-166.

Maier, I., and A. E. Hay, 2009, Occurrence and orientation of anorbital ripples in near-shore sands, J. Geophys. Res., 114, F04022, doi:10.1029/2008JF001126.

Hay, A.E., and L. Zedel , 2009. Laboratory Tests of a New Multi-Frequency Coherent Doppler Profiler in Oscillatory Flow Boundary Layers, Proc. 33rd IAHR Congress: Water Engineering for a Sustainable Environment, 9-14 Aug., Vancouver, pp. 5961-5968.

Zedel, L., and A.E. Hay, 2009. Design and Performance of a New Multi-Frequency Coherent Doppler Profiler. Proc. 33rd IAHR Congress: Water Engineering for a Sustainable Environment, 9-14 Aug., Vancouver, pp. 3188-3194.

Moore, S.A. and A.E. Hay, 2009. Angular scattering from sand in turbulent suspension, J. Acoust. Soc. Am., 126(3) 1046-1056.

Hay, A.E., L. Zedel, R. Craig, and W. Paul, 2008. Multi-Frequency, Pulse-to-pulse Coherent Doppler Sonar Profiler. Proc. IEEE/OES/CMTC Ninth Working Conference on Current Measurement Technology, pp. 25-29.

Cheel, R., and A.E. Hay, 2008. Cross Ripple Patterns and Wave Directional Spectra, J. Geophys, Res. 113, C10009, doi:10.1029/2008JC004734.

Mullarney, J.C., A.E. Hay, and A.J. Bowen, 2008. Resonant modulation of the flow in a tidal channel. J. Geophys. Res., 113, C10007, doi:10.1029/2007/C004522.

Mulligan, R.P., A.E. Hay, and A.J. Bowen, 2008. Wave-driven circulation in a coastal bay during the landfall of a hurricane. J. Geophys. Res., 113, C05026, doi:10.1029/2007JC004500.

Mulligan, R.P., A.J. Bowen, A.E. Hay, A.J. van der Westhuysen, and J.A. Battjes, 2008. Whitecapping and wave field evolution in a coastal bay. J. Geophys. Res., 113, C03008, doi:10.1029/2007JC004382.

Hay, A.E., 2008. Near-bed turbulence and relict wave-formed sand ripples: Observations from the inner shelf, J. Geophys. Res., 113, C04040, doi:10.1029/2006JC004013.

Newgard, J.P. and A.E. Hay, 2007. Turbulence intensity in the wave boundary layer and bottom friction under (mainly) flat bed conditions, J. Geophys. Res., 112, C09024, doi:10.1029/ 2006JC003881.

Wang, L., J. Sheng, A.E. Hay, and D.J. Schillinger, 2007. Storm-induced circulation in Lunenburg Bay, Nova Scotia: Observations and numerical simulations, J. Phys. Oceanogr., 37, 873-895, DOI: 10.1175/JPO3031.1.

Smyth, C., A.E. Hay, P.S. Hill, and D. Schillinger, 2006. Acoustic observations of vertical and horizontal swimming velocities of a diel migrator. J. Mar. Res. 64(5), 723-743.

Zou, Q., A.J. Bowen and A. E. Hay, 2006. The vertical distribution of wave shear stress in variable water depth: Theory and field observations. J. Geophys. Res., 111, C9, (C09032), doi:10.1029/ 2005JC003300.

Hay, A.E., and R. Speller, 2005. Naturally-occurring scour pits in nearshore sands, J. Geophys. Res. -Earth Surface, 110 (F02004), doi:10.1029/2004JF000199.

Hay, A.E., and T. Mudge, 2005. Principal bed states during SandyDuck97: Occurrence, spectral anisotropy,and the bedstate storm cycle, J. Geophys. Res.-Oceans, 110 (C03013), doi: 10.1029/2004JC002451.

Ngusaru, A.S., and A.E.Hay, 2004. Cross-shore migration of lunate megaripples during Duck94, J. Geophys. Res., 109, C02006, 16 pp.

Laurinolli, M.H., A.E. Hay, F. Desharnais, and C.T. Taggart, 2003. Localization of North Atlantic right whale sounds in the Bay of Fundy using a sonobuoy array, Marine Mammal Science, 19(4), 708-723.

Vanderlaan, A.S.M., A.E. Hay and C.T. Taggart, 2003. Characterization of North Atlantic right whale (Eubalaena glacialis) sounds in the Bay of Fundy. IEEE J. Oceanic Eng., 28 (2), 164-173.

Zou, Q., A.E. Hay, and A.J. Bowen, 2003. Vertical structure of surface gravity waves propagating over a sloping sea bed: theory and field measurements, J. Geophys. Res., 108 (C8), 3265, 10.1029/2002JC001432, 21-1 - 21-15.

Smyth, C, and A.E. Hay, 2003. Near-bed turbulence and bottom friction during SandyDuck97, J. Geophys. Res., 108 (C6), 3197, doi:10.1029/2001JC000952, 28-1 - 28-14.

Zou, Q., and A.E. Hay, 2003. The vertical structure of the wave bottom boundary layer over a sloping bed: Theory and field measurements, J. Phys. Ocean, 33, 1380-1400.

Crawford, A.M., and A.E. Hay, 2003. Wave orbital velocity skewness and linear transition ripple migration: Comparison with weakly nonlinear theory, J. Geophys. Res., 108 (C3) 10.1029/2001JC001254, 36-1 - 36-6.

Smyth, C., A.E. Hay, and L. Zedel, 2002. Coherent Doppler Profiler Measurements of Near-bed Suspended Sediment Fluxes and the Influence of Bedforms, J. Geophys. Res., 107 (C8), 10.1029/2000JC000760, 19-1 - 19-20.

Smyth, C., and A.E. Hay, 2002. Wave friction factors in nearshore sands, J. Phys. Oceanogr., 32 (12), 3490-3498.

Zedel, L., and A.E. Hay, 2002. A three component bistatic coherent Doppler velocity profiler: Error sensitivity and system accuracy, IEEE J. Oceanic Eng., 27, 717-725.

Irish, J.D., A.E. Hay, P. Traykovski, A. Newhall, R. Craig, and W.M. Paul. On attaching acoustic imaging instrumentation to the LEO-15 Observatory for sediment transport and bottom boundary layer studies, IEEE J. Oceanic Eng., 27 (2), 254-266.

Crawford, A.M., and A.E. Hay, 2001. Linear Transition Ripple Migration and Wave-Orbital Velocity Skewness: Observations. J. Geophys Res., 106 (C7), 14,113-14,128.

Hukuda, H., A.E. Hay, and R.J. Greatbatch, 2001. A Two-Layer Model of Shelfbreak Jets with Application to the Labrador Current. J. Phys. Ocean. 31 (2), 324-335.

Zou, Q., and A.E. Hay, 2001. Velocity Profiles Above and Within the Wave Bottom Boundary Layer over a Sloping Bottom, Proc. ICCE, Sydney, Australia, pp. 94-107.

Irish, J.D., J.F. Lynch, P.A. Traykovski, A.E. Newhall, K. Prada, and A.E. Hay, 1999. A self contained sector scanning sonar for bottom roughness observations as part of suspended sediment studies. J. Atm Oceanic Tech., 16, 1830-1841.

Zedel, L., and A. E. Hay. 1999. A Coherent Doppler Profiler for High Resolution Particle Velocimetry in the Ocean: Laboratory Measurements of Turbulence and Particle Flux. J. Atmos and Ocean. Tech., 16, 1102-1117.

Traykovski, P., A.E. Hay, J.D. Irish, and J. F. Lynch. 1999. Geometry, migration, and evolution of wave orbital ripples at LEO-15. J. Geophys. Res., 104, 1505-1524.

Crawford, A. M., and A. E. Hay. 1998. A Simple System for Laser-Illuminated Video Imaging of Sediment Suspension and Bed Topography. IEEE J. Oceanic. Eng. 23(1), 12-19.

Bass, S. J. and A. E. Hay. 1997. Ambient Noise in the Natural Surf Zone: Wave Breaking Frequency. IEEE J. Oceanic Eng. 22(3), 411-424.

Schaafsma, A. S. and A. E. Hay. 1997. Attenuation in Suspensions of Irregularly-Shaped Sediment Particles: A 2-Parameter Equivalent Spherical Scatterer Model. J. Acoust. Soc. Am. 102(3), 1485-1502.

Zedel, L., A.E. Hay, R. Cabrera, and A. Lohrmann, 1996. Performance of a Single Beam, Pulse-to-Pulse Coherent Doppler Profiler. IEEE J. Oceanic Eng. 21(3), 290-297.

Sheng, J. and A. E. Hay. 1995. Sediment Eddy Diffusivity Profiles in the Nearshore Zone from Multifrequency Acoustic Backscatter, Continental Shelf Res., 15, 129-147.

Zedel, L. and A. E. Hay, 1995. Coherent Acoustic Doppler Profiling of Sediment Suspension Under Waves. Proc. Can. Coastal Conf., October 18-21, 1995, Dartmouth, Nova Scotia, 907-918.

Hay, A. E. and A. J. Bowen, 1994. On the Coherence Scales of Wave-Induced Suspended Sand Concentration Fluctuations. J. Geophys. Res. 99, 12,749-12,765.

Hay, A. E. and D. Wilson, 1994. Rotary Sidescan Images of Nearshore Bedform Evoluation During a Storm, Marine Geology 119, 57-65.

White, M. and A. E. Hay, 1994. Dense Overflow into a Large Silled Embayment: Tidal Modulation, Fronts and Basin Modes. J. Marine Res. 52, 459-487.