B. Figure, 1: Across-stream velocity profiles measured during ADCP gauging at Romans-sur-Isère for a range of discharge values, 2008.

M. A. Ainslie, C. H. Harrison, and M. Zampolli, An analytical solution for signal, background and signal to background ratio for a low frequency active sonar in a Pekeris waveguide satisfying Lambert's rule, Proc. 4th International Conf. and Exhibition on Underwater Acoustic Measurements: Technologies and Results, pp.491-498, 2011.

L. Astrade, La Saône en crue: dynamique d'un hydrosystème anthropisé (The flooding Saône: dynamics of an anthropized hydrosystem, Presses universitaires de Lyon, 2005.

A. S. Bero and R. J. Gibbs, Mechanisms of pollutant transport in the Hudson estuary, The Science of the Total Environment, vol.97, pp.9-22, 1990.

J. P. Bravard, . Le-rhône, and . Du-léman-À-lyon, , 1987.

F. A. Buschman, A. J. Hoitink, M. Van-der, P. Vegt, and . Hoekstra, Subtidal water level variation controlled by river flow and tides, Water Resour. Res, vol.45, 2009.

F. B. Campbell and H. A. Bauder, A rating-curve method for determining silt-discharge of streams, Trans. Amer. Geophys. Un, vol.21, pp.603-607, 1940.

J. R. Campbell, Limitations in the laser particle sizing of soils, Advances in Regolith: Proceedings of the CRC LEME Regional Regolith Symposia, pp.38-42, 2003.

C. S. Clay and H. Medwin, Acoustical Oceanography: Principles and Applications, p.82, 1977.

A. M. Crawford and A. E. Hay, Determining suspended sand size and concentration from multifrequency acoustic backscatter, J. Acous. Soc. Am, vol.94, pp.3312-3324, 1993.

B. J. Davis, P. Gough, and B. Hunt, Sea surface simulator for testing a synthetic aperture sonar, in Impact of littoral environmental variability on acoustic predictions and sonar performance, pp.473-480, 2002.

K. L. Deines, Backscatter estimation using broadband acoustic Doppler current profilers, Proc. IEEE, 6th Working Conf. on Current Measurement, pp.249-253, 1999.

C. Doppler, Über das farbige Licht der Doppelsterne und einiger anderer Gestirne des Himmels (On the Coloured Light from Double Stars and Other Stars of the Sky), Abhandlungen der Königlich Böhmischen Gesellschaft der Wissenschaften, vol.2, pp.465-482, 1842.

J. Downing, Twenty-five years with OBS sensors: The good, the bad, and the ugly, Cont. Shelf Res, 2006.

I. G. Droppo and E. D. Ongley, Flocculation of suspended sediment in rivers of Southeastern Canada, Wat. Res, vol.28, pp.1799-1809, 1994.

D. D. Ellis, Solutions to range-dependent reverberation and sonar workshop problems using an adiabatic normal mode model, Proc. 4th International Conf. and Exhibition on Underwater Acoustic Measurements: Technologies and Results, pp.485-490, 2011.

J. J. Faran and . Jr, Sound scattering by solid cylinders and spheres, J. Acoust. Soc. Am, vol.23, pp.405-418, 1951.

F. H. Fisher and V. P. Simmons, Sound absorption in sea water, J. Acoust. Soc. Am, vol.62, pp.558-564, 1977.

G. H. Flammer, Ultrasonic measurement of suspended sediment, Geo. Survey Bull, 1141.

I. D. Foster, R. Millington, and R. G. Grew, The impact of particle size controls on stream turbidity measurement; some implications for suspended sediment yield estimation, Erosion and Sediment Transport Monitoring Programmes in River Basins (Proceedings of the International Symposium in Oslo, pp.51-62, 1992.

J. W. Gartner, Estimating suspended solids concentrations from backscatter intensity measured by acoustic Doppler current profiler in, Marine Geology, vol.211, pp.169-187, 2004.

L. Gostiaux and H. Van-haren, Extracting meaningful information from uncalibrated backscattered echo intensity data, Journal of Atmospheric and Oceanic Technology, vol.27, pp.943-949, 2010.
URL : https://hal.archives-ouvertes.fr/hal-00481424

H. K. Ha, J. P. Maa, K. Park, and Y. H. Kim, Estimation of high-resolution sediment concentration profiles in bottom boundary layer using pulse-coherent acoustic Doppler current profilers, Marine Geology, vol.279, pp.199-209, 2011.

H. Lange, Solitax sc user manual, 2006.

A. E. Hay, On the remote acoustic detection of suspended sediment at long wavelengths, J. Geophys. Res, vol.88, pp.7525-7542, 1983.

A. E. Hay, Sound scattering from a particle-laden, turbulent jet, J. Acoust. Soc. Am, vol.90, pp.2055-2074, 1991.

A. E. Hay and D. G. Mercer, On the theory of sound scattering and viscous absorption in aqueous suspensions at medium and short wavelengths, J. Acoust. Soc. Am, vol.78, pp.1761-1771, 1985.

A. E. Hay and J. Sheng, Vertical profiles of suspended sand concentration and size from multifrequency acoustic backscatter, J. Geophys. Res, vol.97, pp.661-676, 1992.

R. Hickling, Analysis of echoes from a solid elastic sphere in water, J. Acoust. Soc. Am, vol.34, pp.1582-1592, 1962.

D. M. Hicks and B. Gomez, Tools in Fluvial Geomorphology, chap. Sediment transport, pp.425-461, 2003.

A. J. Hoitink, F. A. Buschman, and B. Vermeulen, Continuous measurements of discharge from a horizontal acoustic Doppler current profiler in a tidal river, Water Resour. Res, vol.45, 2009.

G. P. Holdaway, P. D. Thorne, D. Flatt, S. E. Jones, and D. Prandle, Comparison between ADCP and transmissometer measurements of suspended sediment concentration, Cont. Shelf Res, vol.19, pp.421-441, 1999.

A. Howard and R. Dolan, Geomorphology of the Colorado River in the Grand Canyon, The Journal of Geology, vol.89, pp.269-298, 1981.

H. Huang, River discharge monitoring using Horizontal Acoustic Doppler Current Profiler (H-ADCP), 2006, teledyne RD Instruments

D. Hurther, P. D. Thorne, M. Bricault, J. -. Barnoud, and U. Lemmin, A multi-frequency Acoustic Concentration and Velocity Profiler (ACVP) for boundary layer measurements of fine-scale flow and sediment transport processes, Coastal Eng, vol.58, pp.594-605, 2011.
URL : https://hal.archives-ouvertes.fr/hal-00614448

L. Coz, J. , G. Pierrefeu, J. F. Brochot, A. Paquier et al., Suspended-load dynamics during floods in the river Saône, France, Proc. 10th International Symposium on River Sedimentation, 2007.

L. Coz, J. , G. Pierrefeu, and A. Paquier, Evaluation of river discharges monitored by a fixed side-looking Doppler profiler, Water Resour. Res, vol.44, pp.0-09, 2008.
URL : https://hal.archives-ouvertes.fr/hal-01058497

L. Coz, J. , G. Saysset, and G. Pierrefeu, Rapport d'essais -Régate ADCP, Groupe Doppler France (utilisateurs ADCP), vol.1, 2009.

K. D. Lepage, Real-time simulation of reverberation for moving platforms, Proc. 4th International Conf. and Exhibition on Underwater Acoustic Measurements: Technologies and Results, pp.471-478, 2011.

W. Lick, Sediment and Contaminant Transport in Surface Waters, 2009.

A. Lohrmann, Monitoring sediment concentration with acoustic backscatter instruments, Tech. rep, 2001.

(. J. Lord, Strutt) Rayleigh, Theory of Sound, vol.2, p.pp, 1945.

Y. Ma, K. Varadan, and V. V. Varadan, Application of Twersky's multiple scattering formalism to a density suspension of elastic particles in water, J. Acoust. Soc. Am, vol.75, pp.335-339, 1984.

;. C. Malvern, Guide pratique de la granulométrie laser (practical guide for laser grain sizing, 2005.

G. V. Middleton, Topics in Mathematical Geology, chap. The generation of lognormal size frequency distributions in sediments, pp.34-42, 1970.

C. R. Miller, Analysis of flow duration sediment rating curve method of computing sediment yield, 1951.

S. Moore, J. L. Coz, D. Hurther, and A. Paquier, On the application of horizontal adcps to suspended sediment transport surveys in rivers, 2011.
URL : https://hal.archives-ouvertes.fr/hal-00751774

S. A. Moore, J. L. Coz, G. Pierrefeu, C. Perret, D. Hurther et al., Measuring river flow using sidelooking acoustic Doppler current profilers : a comparison to vertically-oriented ADCP results, Proc. 33rd IAHR Congress: Water Eng. for a Sustainable Environment, 2009.
URL : https://hal.archives-ouvertes.fr/hal-02592427

A. Morel and A. Bricaud, Inherent optical properties of algal cells, including picoplankton: Theoretical and experimental results, Canadian Bulletin of Fisheries and Aquatic Science, vol.214, pp.521-559, 1986.

S. E. Morlock, Evaluation of acoustic Doppler current profiler measurements of river discharge, Geological Survey, 1996.

P. M. Morse and K. U. Ingard, Theoretical Acoustics, 1968.

W. G. Neubauer, R. H. Vogt, and L. R. Dragonette, Acoustic reflection from elastic spheres. I. Steady-state signals, J. Acoust. Soc. Am, vol.55, pp.1123-1129, 1974.

, NF ISO 13320-1, Particle size analysis: laser diffraction methods

Y. Nihei and A. Kimizu, A new monitoring system for river discharge with horizontal acoustic Doppler current profiler measurements and river flow simulation, Water Resour. Res, vol.44, issue.00, 2008.

K. A. Oberg, In search of easy-to-use methods for calibrating ADCP's for velocity and discharge measurements, Proc., Hydraulic Measurements & Experimental Methods, 2002.

K. A. Oberg and D. Mueller, Validation of streamflow measurements made with acoustic Doppler current profilers, Journal of Hydraulic Engineering, vol.133, pp.1421-1432, 2007.

D. R. Olson, A. P. Lyons, and D. C. Brown, Parameterization of very rough seafloors using high-resolution syntehtic aperture sonar, Proc. 4th International Conf. and Exhibition on Underwater Acoustic Measurements: Technologies and Results, pp.1637-1642, 2011.

G. Pierrefeu, Journée utilisateurs Technitrade, Oral presentation, 2008.

S. E. Rantz, Computation of discharge, Water Supply Paper 2175, vol.2, 1982.

. Rd-instruments, Acoustic Doppler Current Profiler Principles of Operation: a Practical Primer, 1996.

. Rd-instruments, ADCP Coordinate Transformation: Formulas and Calculations, RD Instruments, Workhorse H-ADCP Operational Manual, vol.87, p.158, 2007.

G. Reichel and H. P. Nachtnebel, Suspended sediment monitoring in a fluvial environment: Advantages and limitations applying an acoustic Doppler current profiler, Water Research, vol.28, pp.751-761, 1994.

C. A. Ruhl and M. R. Simpson, Computation of discharge using the index-velocity method in tidally affected areas, Scientific Investigations Report 2005-5004, 2005.

M. G. Sassi, A. J. Hoitink, B. Vermeulen, and H. , Discharge estimation from H-ADCP measurements in a tidal river subject to sidewall effects and a mobile bed, Water Resour. Res, vol.47, 2011.

S. Sengupta, Grain-size distribution of suspended load in relation to bed materials and flow velocity, Sedimentology, vol.26, pp.63-82, 1979.

J. Sheng, Remote determination of suspended sediment size and concentration by multifrequency acoustic backscatter, 1991.

J. Sheng and A. E. Hay, An examination of the spherical scatterer approximation in aqueous suspensions of sand, J. Acoust. Soc. Am, vol.83, pp.598-610, 1988.

R. D. Teledyne and . Instruments, Workhorse H-ADCP Specification Sheet, p.1022, 2007.

M. M. Thevenot, T. L. Prickett, and N. C. Kraus, Tylers Beach, Virginia, dredged material plume monitoring project, 1991.

P. D. Thorne and D. M. Hanes, A review of acoustic measurement of small-scale sediment processes, Cont. Shelf Res, vol.22, pp.603-632, 2002.

P. D. Thorne and P. J. Hardcastle, Acoustic measurements of suspended sediments in turbulent currents and comparison with in-situ samples, J. Acoust. Soc. Am, vol.101, pp.2603-2614, 1997.

P. D. Thorne and R. Meral, Formulations for the scattering properties of suspended sandy sediments for use in the application of acoustics to sediment transport processes, Cont. Shelf Res, vol.28, pp.309-317, 2008.

D. J. Topping, S. A. Wright, T. S. Melis, and D. M. Rubin, High-resolution measurements of suspended-sediment concentration and grain size in the Colorado River in Grand Canyon using a multi-frequency acoustic system, Proc. 10th International Symposium on River Sedimentation, 2007.

R. J. Urick, The absorption of sound in suspensions of irregular particles, J. Acoust. Soc. Am, vol.20, pp.283-289, 1948.

D. E. Walling, Limitations of the rating curve technique for estimating suspended sediment loads, with particular reference to British rivers, in Erosion and Solid Matter Transport in Inland Waters, Proc. of a symposium, pp.34-48, 1977.

D. E. Walling, B. W. Webb, and M. A. Russell, Sediment-associated nutrient transport in UK rivers, Freshwater Contamination (Proc. IAHS Rabat Symposium S4), pp.69-81, 1997.

M. W. Wedd, Determination of particle size distributions using laser diffraction, Tech. rep., Educ. Reso. for Part. Techn, 2003.

M. S. Wood, Evaluation of sediment surrogates in rivers draining to Lower Granite Reservoir, ID and WA, Proc. 9th Federal Interagency Sedimentation Conf., Las Vegas, 2010.

P. A. Wood, Controls of variation in suspended sediment concentration in the River Rother, Sedimentology, vol.24, pp.437-445, 1977.

S. A. Wright, D. J. Topping, and C. A. Williams, Discriminating silt-and-clay from suspendedsand in rivers using side-looking acoustic profilers, Proc. 9th Federal Interagency Sedimentation Conf., Las Vegas, 2010.

R. Xu and O. A. Di-guida, Comparison of sizing small particles using different technologies, Powder Technology, vol.132, pp.145-153, 2003.

S. Horizontaux,

S. A. Moore-résumé,

, Plus d'un an de données acquises avec des H-ADCP de 300, 600 et 1200 kHz sur quatre sites, sur le Rhône, l'Isère et la Saône, avec des géométries et des conditions de forçage contrastées sont analysées. Les résultats montrent qu'une profondeur de section limitée peut poser problème en raison de la diffusion d'une partie de l'énergie acoustique par la surface libre. De plus, quand l'intensité rétrodiffusée par les particules est trop faible, les mesures de vitesse sont sous-estimées ou plus dispersées par rapport aux mesures de référence. Des relations de vitesse indice sont toutefois établies en fonction de l'intensité et de la concentration afin de corriger les vitesses. La concentration en MES est déterminée à partir de l'atténuation acoustique qui est importante pour des suspensions concentrées de limons ( 100 mg/L). Les constantes d'atténuation sont obtenues par calage sur des mesures de turbidité ; elles sont proches des valeurs théoriques calculées pour les distributions granulométriques des particules primaires. Les mesures acoustiques de concentration sont en bon accord avec les mesures de référence et reproduisent finement la dynamique temporelle. En outre, l'évolution de la granulométrie est étudiée à partir des mesures multi-fréquences d'atténuation sous l'hypothèse que les distributions granulométriques sont lognormales. Cette étude montre qu'une fois que les conditions limites pour des mesures fiables sont bien établies, le H-ADCP est un outil performant, Cette thèse est une étude de l'applicabilité des profileurs acoustiques Doppler horizontaux (H-ADCP) pour le suivi des flux d'eau et de matières en suspension (MES) dans les rivières

, Mots-clés : Mesures acoustiques multi-fréquences, flux de sédiments en suspension, H-ADCP

. Monitoring, . Of, S. Suspended, and . Profilers,