My research covers a wide range of topics in geomorphology and hydrology such as landscape evolution, the interaction between hill-slopes and channels, channel stability and morphology, river sediment transport and sediment yield, stream ecology, in-channel wood dynamics, and modeling fine sediments and their interactions with stream physical and biological characteristics.

I have worked on fundamental processes involving flow and sediment transport and contributed to the advancement of river science at various scales, from sediment grains to watersheds, and in fields outside fluvial geomorphology such as urban hydrology, hyporheic flow, desert floods, water quality, and water resources.

Model development has been a very important component of my research, with considerable experimental flume work used to complement field data.

2022

Zhu, L., D. Chen, M. Hassan, and J. G. Venditti. 2022. The influence of riparian vegetation on the sinuosity and lateral stability of meandering channels. Geophysical Research Letters 49 (2). doi: https://doi.org/10.1029/2021GL096346.

2021

HASSAN, M. A., RADIĆ, V., BUCKRELL, E., CHARTRAND, S. M. and MCDOWELL, C. 2021 ‘Pool-Riffle Adjustment Due to Changes in Flow and Sediment Supply’ Water Resources Research 57(2) https://doi.org/10.1029/2020WR028048

AN, C., GONG, Z., NAITO, K., PARKER, G., HASSAN, M. A., MA, H. and FU, X. 2021 ‘Grain Size-Specific Engelund-Hansen Type Relation for Bed Material Load in Sand-Bed Rivers, With Application to the Mississippi River’ Water Resources Research 57(2)  https://doi.org/10.1029/2020WR027517

Reid, D.A., M. A. Hassan, and R. McCleary. 2021. Glacial landscape configuration influences channel response to Flooding. Earth Surface Processes and Landforms 47: 209–227. doi: https://doi.org/10.1002/esp.5240

Al-Ghorani, N. G., M. A. Hassan, and E. J. Langendoen. 2021. Spatiotemporal patterns of fractional suspended sediment dynamics in small watersheds. Water Resources Research 57(11). https://doi.org/10.1029/2021WR030851

An, C., M.A. Hassan, C. Ferrer-Boix, and X. Fu. 2021. Effect of stress history on sediment transport and channel adjustment in graded gravel-bed rivers. Earth Surface Dynamics 9 (2): 333– 350. https://doi.org/10.5194/esurf-9-333-2021.

Juez, C., N. Garijo, M. A. Hassan, and E. Nadal-Romero. 2021. Intraseasonal-to- interannual analysis of discharge and suspended sediment concentration time-series of the Upper Changjiang (Yangtze River). Water Resources Research 57 (8). https://doi.org/10.1029/2020WR029457.

Wang, J., M. A. Hassan, M. Saletti, X. Chen, X. Fu, H. Zhou, and X. Yang. 2021. On how episodic sediment supply influences the evolution of channel morphology, bedload transport and channel stability in an experimental step-pool channel. Water Resources Research 57 (7). https://doi.org/10.1029/2020WR029133.

Luzi, D., M. A. Hassan, E. Papangelakis, and B. Eaton.2021. Cycles of aggradation and degradation in gravel-bed rivers mediated by sediment storage and morphologic evolution. Geomorphology 395 (11). doi: https://doi.org/10.1016/j.geomorph.2021.108001

McDowell, C., D. Gaeuman, and M. A. Hassan. 2021. Linkages between bedload displacements and topographic change. Earth Surface Processes and Landforms 46 (15): 3127–3142. doi: https://doi.org/10.1002/esp.5221

Terweh, S., M. A. Hassan, L. Mao, L. Schrott, and T. O. Hoffmann. 2021. Bio-climate affects hillslope and fluvial sediment grain size along the Chilean Coastal Cordillera. Geomorphology 384. doi: https://doi.org/10.1016/j.geomorph.2021.107700

Turley, M., M. A. Hassan, and O. Slaymaker. 2021. Quantifying sediment connectivity: Moving toward a holistic assessment through a mixed methods approach. Earth Surface Processes and Landforms 46 (12): 2501–2519. https://doi.org/10.1002/esp.5191

Wang, J., M. A. Hassan, M. Saletti, X. Chen, X. Fu, H. Zhou, and X. Yang. 2021. Experimental insights into the effect of event sequencing and sediment input texture on step-pool channel evolution. Earth Surface Processes and Landforms 47 (2): 569-581. doi: https://doi.org/10.1002/esp.5272

2020

SALETTI, M. and HASSAN, M. A. 2020 ‘Width variations control the development of grainstructuring in steep step-pool dominated streams:insight from flume experiments’ Earth Surface Processes and Landforms 45(6): 1430-1440 https://doi.org/10.1002/esp.4815

ZHANG, Y., HASSAN, M. A., KING, L., FU, X., ISTANBULLUOGLU, E., and WANG, G. 2020 ‘Morphometrics of China’s Loess Plateau: The spatial legacy of tectonics, climate, and loess deposition history’ Geomorphology 354 https://doi.org/10.1016/j.geomorph.2020.107043

PIERCE, J. K. and HASSAN, M. A. 2020 ‘Joint Stochastic Bedload Transport and Bed Elevation Model: Variance Regulation and Power Law Rests’ Journal of Geophysical Research: Earth Surface 125(4) https://doi.org/10.1029/2019JF005259

PIERCE, J. K. and HASSAN, M. A. 2020 ‘Back to Einstein: Burial-Induced Three-Range Diffusion in Fluvial Sediment Transport’ Geophysical Research Letters 47(15) https://doi.org/10.1029/2020GL087440

REID, D. A. and HASSAN, M. A. 2020 ‘Response of In-Stream Wood to Riparian Timber Harvesting: Field Observations and Long-Term Projections’ Water Resources Research 56(8) DOI:10.1029/2020WR027077

CHEN, X., HASSAN, M. A., AN, C. and FU, X. 2020 ‘Rough Correlations: Meta-Analysis of Roughness Measures in Gravel Bed Rivers’ Water Resources Research 56(8) https://doi.org/10.1029/2020WR027079

HASSAN, M. A., SALETTI, M., JOHNSON, J. P. L., FERRER-BOIX, C., VENDITTI, J. G. and CHURCH, M. 2020 ‘Experimental Insights Into the Threshold of Motion in Alluvial Channels: Sediment Supply and Streambed State’ Journal of Geophysical Research: Earth Surface 125 https://doi.org/10.1029/2020JF005736

HELM, C., HASSAN, M. A. and REID, D. 2020 ‘Characterization of morphological units in a small, forested stream using close-range remotely piloted aircraft imagery’ Earth Surface Dynamics 8(4), 913-929  https://doi.org/10.5194/esurf-8-913-2020

MCDOWELL, C. and HASSAN, M. A. 2020 ‘The influence of channel morphology on bedload path lengths: Insights from a survival process model’ Earth Surface Processes and Landforms 45(12), 2982-2997  https://doi.org/10.1002/esp.4946

SALETTI, M. and HASSAN, M. A. 2020 ‘Experimental study of sediment supply control on step formation, evolution, and stability’ Earth Surface Dynamics 8(4), 855–868  https://doi.org/10.5194/esurf-8-855-2020

2019

REID, D. A., HASSAN, M. A., BIRD, S., PIKE, R. and TSCHAPLINSKI, P. 2019 ‘Does variable channel morphology lead to dynamic salmon habitat?’ Earth Surface Processes and Landforms 45(2), 295-311 https://doi.org/10.1002/esp.4726

DE REGO, K., LAUER, J. W., EATON, B. and HASSAN, M. A. 2019 ‘A decadal‐scale numerical model for wandering, cobble‐bedded rivers subject to disturbance’ Earth Surface Processes and Landforms 45(4), 912-927 https://doi.org/10.1002/esp.4784

ZHANG, C., XU, M., HASSAN, M. A., CHARTRAND, S. M., WANG, Z. and MA, Z. 2019 ‘Experiment on morphological and hydraulic adjustments of step‐pool unit to flow increase’ Earth Surface Processes and Landforms 45(2), 280-294 https://doi.org/10.1002/esp.4722

TALEBI, A., ZAHEDI, E., HASSAN, M. A. and LESANI, M. T. 2019 ‘Locating suitable sites for the construction of underground dams using the subsurface flow simulation (SWAT model) and analytical network process (ANP) (case study: Daroongar watershed, Iran)’ Sustainable Water Resources Management 5, 1369–1378 https://doi.org/10.1007/s40899-019-00314-5

HASSAN, M. A., SALETTI, M., ZHANG, C., FERRER-BOIX, C., JOHNSON, J. P. L., MÜLLER, T. and VON FLOTOW, C. 2019 ‘Co‐evolution of coarse grain structuring and bed roughness in response to episodic sediment supply in an experimental aggrading channel’ Earth Surface Processes and Landforms 45(4), 948-961 https://doi.org/10.1002/esp.4788

FRACCAROLLO, L. and HASSAN, M. A. 2019 ‘Einstein conjecture and resting-time statistics in the bed-load transport of monodispersed particles’ Journal of Fluid Mechanics 876, 1077-1089 https://doi.org/10.1017/jfm.2019.563

CHARTRAND, S. M., JELLINEK, A. M., HASSAN, M. A. and FERRER-BOIX, C. 2019 ‘What controls the disequilibrium state of gravel‐bed rivers?’ Earth Surface Processes and Landforms 44(15), 3020-3041 https://doi.org/10.1002/esp.4695

REID, D. A., HASSAN, M. A., BIRD, S. and HOGAN, D. 2019 ‘Spatial and temporal patterns of sediment storage over 45 years in Carnation Creek, BC, a previously glaciated mountain catchment’ Earth Surface Processes and Landforms 44(8), 1584-1601 https://doi.org/10.1002/esp.4595

ELGUETA-ASTABURUAGA, M. A. and HASSAN, M. A. 2019 ‘Sediment storage, partial transport, and the evolution of an experimental gravel bed under changing sediment supply regimes’ Geomorphology 330 https://doi.org/10.1016/j.geomorph.2018.12.018

AN, C., PARKER, G., HASSAN, M. A. and FU, X. 2019 ‘Can magic sand cause massive degradation of a gravel-bed river at the decadal scale? Shi‑ting River, China’ Geomorphology 327, 147-158  https://doi.org/10.1016/j.geomorph.2018.10.026

TSURUTA, K., HASSAN, M. A., DONNER, S. D. and ALILA, Y. 2019 ‘Modelling the effects of climatic and hydrological regime changes on the sediment dynamics of the Fraser River Basin, British Columbia, Canada’ Hydrological Processes 33(2), 244-260   https://doi.org/10.1002/hyp.13321

2018

MATOS, J. P., HASSAN, M. A., LU, X. X. and FRANCA, M. J. 2018 ‘Probabilistic Prediction and Forecast of Daily Suspended Sediment Concentration on the Upper Yangtze River’ Journal of Geophysical Research: Earth Surface 123(8), 1982-2003   https://doi.org/10.1029/2017JF004240

JUEZ, C., HASSAN, M. A. and FRANCA, M. J. 2018 ‘The Origin of Fine Sediment Determines the Observations of Suspended Sediment Fluxes Under Unsteady Flow Conditions’ Water Resources Research 54(8), 5654-5669   https://doi.org/10.1029/2018WR022982

MÜLLER, T. and HASSAN, M. A. 2018 ‘Fluvial response to changes in the magnitude and frequency of sediment supply in a 1-D model’ Earth Surface Dynamics 6, 1041-1057  https://doi.org/10.5194/esurf-6-1041-2018

CHARTRAND, S. M., JELLINEK, A. M., HASSAN, M. A. and FERRER-BOIX, C. 2018 ‘Morphodynamics of a Width‐Variable Gravel Bed Stream: New Insights on Pool‐Riffle Formation From Physical Experiments’ Journal of Geophysical Research: Earth Surface 123(11), 2735-2766   https://doi.org/10.1029/2017JF004533

FAN, N., CHU, Z., JIANG, L., HASSAN, M. A., LAMB, M. P. and LIU, X. 2018 ‘Abrupt drainage basin reorganization following a Pleistocene river capture’ Nature Communications 9(3756)  | DOI: 10.1038/s41467-018-06238-6

ZHANG, C., XU, M., HASSAN, M. A., CHARTRAND, S. M. and WANG, Z. 2018 ‘Experimental study on the stability and failure of individual step-pool’ Geomorphology 311, 51-62   https://doi.org/10.1016/j.geomorph.2018.03.023

ELGUETA-ASTABURUAGA, M., HASSAN, M. A., SALETTI, M. and CLARKE, G. K. C. 2018 ‘The Effect of Episodic Sediment Supply on Bedload Variability and Sediment Mobility’ Water Resources Research 54(9), 6319-6335  https://doi.org/10.1029/2017WR022280

TSURUTA, K., HASSAN, M. A., DONNER, S. D. and ALILA, Y. 2018 ‘Development and Application of a Large‐Scale, Physically Based, Distributed Suspended Sediment Transport Model on the Fraser River Basin, British Columbia, Canada’ Journal of Geophysical Research: Earth Surface 123(10), 2481-2508   https://doi.org/10.1029/2017JF004578

HASSAN, M. A., BIRD, S., REID, D., FERRER-BOIX, C., HOGAN, D., BRARDINONI, F. and CHARTRAND, S. 2018 ‘Variable hillslope‐channel coupling and channel characteristics of forested mountain streams in glaciated landscapes’ Earth Surface Processes and Landforms 44(3), 736-751  https://doi.org/10.1002/esp.4527

CIENCIALA, P. and HASSAN, M. A. 2018 ‘Spatial linkages between geomorphic and hydraulic conditions and invertebrate drift characteristics in a small mountain stream’ Canadian Journal of Fisheries and Aquatic Sciences 75(11), 1823-1835  https://doi.org/10.1139/cjfas-2017-0170

2017

PLUMB, B. D., ANNABLE, W. K., THOMPSON, P. J. and HASSAN, M. A. 2017 ‘The Impact of Urbanization on Temporal Changes in Sediment Transport in a Gravel Bed Channel in Southern Ontario, Canada’ Water Resources Research 53(10), 8443-8458   https://doi.org/10.1002/2016WR020288

ELGUETA-ASTABURUAGA, M. A. and HASSAN, M. A. 2017 ‘Experiment on temporal variation of bed load transport in response to changes in sediment supply in streams’ Water Resources Research 53(1), 763-778

HASSAN, M. A., ROBERGE, L., CHURCH, M., MORE, M., DONNER, S. D., LEACH, J. and ALI, K. F. 2017 ‘What are the contemporary sources of sediment in the Mississippi River?’ Geophysical Research Letters 44(17), 8919-8924   https://doi.org/10.1002/2017GL074046