3 Deltas with different degrees of sediment cohesion undergoing pure aggradation. Video of laboratory experiments documenting the evolution of 3 channelized deltas each experiencing the same relative subsidence and water and sediment
infeed rates. The only difference between the experiments is the amount of a polymer added to the sediment mixture that enhances the cohesion of sediment once
deposited. Dye is added to the water to aid identification of the flow field. More details of experiment can be found in manuscript: Li, Q., Benson, W.M., Harlen, M., Robichaux, P., Sha, X., Xu, K., Straub, K.M., 2017, Influence of sediment cohesion on deltaic morphodynamics and stratigraphy over basin-filling time scale, Journal of Geophysical Research Earth Surface, v. 122, DOI: 10.1002/2017JF004216. Straub, K.M., Li, Q., Benson, W.M., 2015, Influence of sediment cohesion on deltaic shoreline dynamics and
bulk sediment retention: A laboratory study, Geophysical Research Letters, v. 42, DOI: 10.1002/2015GL066131.
Comparison of the Evolution of Synthetic Stratigraphy of a Weakly (TDB-10-1) and Strongly cohesive delta (TDB-12). Evolution of synthetic stratigraphy generated from both weakly (TDB-10-1) and strongly (TDB-12) cohesive delta experiments. Deltaic evolution in these experiments occurred with constant feeds of water and sediment and a constant base-level rise. Stratigraphy is generated from stacked topographic scans clipped for erosion. Time in each experiment is normalized by the compensation time scale, while elevation is normalized by the depth of the larger channels in each system. More details of experiment can be found in manuscript: Hajek, E.A. and Straub, K.M., 2017, Autogenic sedimentation in clastic stratigraphy, Annual Review of Earth and Planetary Sciences, v. 45, p. 681-709, DOI: 10.1146/annurev-earth-063016-015935. Li, Q., Benson, W.M., Harlen, M., Robichaux, P., Sha, X., Xu, K., Straub, K.M., 2017, Influence of sediment cohesion on deltaic morphodynamics and stratigraphy over basin-filling time scale, Journal of Geophysical Research Earth Surface, v. 122, DOI: 10.1002/2017JF004216. Straub, K.M., Li, Q., Benson, W.M., 2015, Influence of sediment cohesion on deltaic shoreline dynamics and
bulk sediment retention: A laboratory study, Geophysical Research Letters, v. 42, DOI: 10.1002/2015GL066131.
Evolution of Synthetic Stratigraphy of a Strongly cohesive delta (TDB-12). Evolution of synthetic stratigraphy generated a strongly cohesive delta experiment (TDB-12). Deltaic evolution in this experiment
occurred with constant feeds of water and sediment and a constant base-level rise. Stratigraphy is generated from stacked topographic scans clipped
for erosion. Each frame of movie represents evolution of stratigraphy over 1 hour. Top panel is stratigraphy from proximal cross-section, middle
panel is from a distal cross-section and bottom panel is stratigraphy of a dip cross section. More details of experiment can be found in manuscript: Li, Q., Benson, W.M., Harlen, M., Robichaux, P., Sha, X., Xu, K., Straub, K.M., 2017, Influence of sediment cohesion on deltaic morphodynamics and stratigraphy over basin-filling time scale, Journal of Geophysical Research Earth Surface, v. 122, DOI: 10.1002/2017JF004216. Straub, K.M., Li, Q., Benson, W.M., 2015, Influence of sediment cohesion on deltaic shoreline dynamics and
bulk sediment retention: A laboratory study, Geophysical Research Letters, v. 42, DOI: 10.1002/2015GL066131.
Topographic evolution of Strongly cohesive delta (TDB-12). Video of topographic evolution of a laboratory experiment documenting evolution of channelized delta experiencing relative
subsidence at a constant rate with a constant input of water and strongly cohesive sediment. Elevation of each map is referenced to sea-level at that
time. Topography collected on a 5 mm x 5 mm grid with a FARO Laser Scanner. More details of experiment can be found in manuscript: Li, Q., Benson, W.M., Harlen, M., Robichaux, P., Sha, X., Xu, K., Straub, K.M., 2017, Influence of sediment cohesion on deltaic morphodynamics and stratigraphy over basin-filling time scale, Journal of Geophysical Research Earth Surface, v. 122, DOI: 10.1002/2017JF004216. Straub, K.M., Li, Q., Benson, W.M., 2015, Influence of sediment cohesion on deltaic shoreline dynamics and
bulk sediment retention: A laboratory study, Geophysical Research Letters, v. 42, DOI: 10.1002/2015GL066131.
Strongly cohesive delta (TDB-12) undergoing pure aggradation. Video of laboratory experiment documenting evolution of channelized delta experiencing relative subsidence at a constant
rate with a constant input of water and strongly cohesive sediment. Digital video was collected from camera above the basin. Blue dye
added to water aids identification of flow field. More details of experiment can be found in manuscript: Li, Q., Benson, W.M., Harlen, M., Robichaux, P., Sha, X., Xu, K., Straub, K.M., 2017, Influence of sediment cohesion on deltaic morphodynamics and stratigraphy over basin-filling time scale, Journal of Geophysical Research Earth Surface, v. 122, DOI: 10.1002/2017JF004216. Straub, K.M., Li, Q., Benson, W.M., 2015, Influence of sediment cohesion on deltaic shoreline dynamics and
bulk sediment retention: A laboratory study, Geophysical Research Letters, v. 42, DOI: 10.1002/2015GL066131.
Moderately cohesive delta (TDB-13-S2) undergoing pure aggradation. Video of laboratory experiment documenting evolution of channelized delta experiencing relative subsidence at a constant
rate with a constant input of water and moderately cohesive sediment. Experiment shares identical boundary conditions as TDB-12, except the amount of
polymer added to the input sediment for cohesion. Digital video was collected from camera above the basin. Red dye added to water aids
identification of flow field. More details of experiment can be found in manuscript: Li, Q., Benson, W.M., Harlen, M., Robichaux, P., Sha, X., Xu, K., Straub, K.M., 2017, Influence of sediment cohesion on deltaic morphodynamics and stratigraphy over basin-filling time scale, Journal of Geophysical Research Earth Surface, v. 122, DOI: 10.1002/2017JF004216. Straub, K.M., Li, Q., Benson, W.M., 2015, Influence of sediment cohesion on deltaic shoreline dynamics and
bulk sediment retention: A laboratory study, Geophysical Research Letters, v. 42, DOI: 10.1002/2015GL066131.
Weakly cohesive delta (TDB-13-S1) undergoing pure aggradation. Video of laboratory experiment documenting evolution of channelized delta experiencing relative subsidence at a constant
rate with a constant input of water and weakly cohesive sediment. Experiment shares identical boundary conditions as TDB-12, except the amount of
polymer added to the input sediment for cohesion. Digital video was collected from camera above the basin. Blue dye added to water aids
identification of flow field. More details of experiment can be found in manuscript: Li, Q., Benson, W.M., Harlen, M., Robichaux, P., Sha, X., Xu, K., Straub, K.M., 2017, Influence of sediment cohesion on deltaic morphodynamics and stratigraphy over basin-filling time scale, Journal of Geophysical Research Earth Surface, v. 122, DOI: 10.1002/2017JF004216. Straub, K.M., Li, Q., Benson, W.M., 2015, Influence of sediment cohesion on deltaic shoreline dynamics and
bulk sediment retention: A laboratory study, Geophysical Research Letters, v. 42, DOI: 10.1002/2015GL066131.
Autogenic Parasequence Development During Strongly Cohesive Delta Experiment (TDB-12). Evolution of synthetic stratigraphy generated during a strongly cohesive delta experiment (TDB-12). Deltaic evolution in this experiment
occurred with constant feeds of water and sediment and a constant base-level rise. Stratigraphy is generated from stacked topographic scans clipped
for erosion. Each frame of movie represents evolution of stratigraphy over 1 hour. Stratigraphy is colored by environment of deposition (yellow terrestrial, brown marine). Blue line represents sea-level at each hour. Transect oriented in dip direction from entrance box to shoreline. More details of experiment can be found in manuscript: Li, Q., Benson, W.M., Harlen, M., Robichaux, P., Sha, X., Xu, K., Straub, K.M., 2017, Influence of sediment cohesion on deltaic morphodynamics and stratigraphy over basin-filling time scale, Journal of Geophysical Research Earth Surface, v. 122, DOI: 10.1002/2017JF004216. Straub, K.M., Li, Q., Benson, W.M., 2015, Influence of sediment cohesion on deltaic shoreline dynamics and
bulk sediment retention: A laboratory study, Geophysical Research Letters, v. 42, DOI: 10.1002/2015GL066131.
Moderately cohesive delta (TDB-13-S2) undergoing pure aggradation. Video of laboratory experiment documenting evolution of channelized delta experiencing relative subsidence at a constant
rate with a constant input of water and moderately cohesive sediment. Experiment shares identical boundary conditions as TDB-12, except the amount of
polymer added to the input sediment for cohesion. Digital video was collected from camera above the basin. Images were taken with flow off at the end of
each run hour. Colored blue sediment represents coarsest 10% of input sediment distribution. More details of experiment can be found in manuscript: Li, Q., Benson, W.M., Harlen, M., Robichaux, P., Sha, X., Xu, K., Straub, K.M., 2017, Influence of sediment cohesion on deltaic morphodynamics and stratigraphy over basin-filling time scale, Journal of Geophysical Research Earth Surface, v. 122, DOI: 10.1002/2017JF004216. Straub, K.M., Li, Q., Benson, W.M., 2015, Influence of sediment cohesion on deltaic shoreline dynamics and
bulk sediment retention: A laboratory study, Geophysical Research Letters, v. 42, DOI: 10.1002/2015GL066131.
Weakly cohesive delta (TDB-13-S1) undergoing pure aggradation. Video of laboratory experiment documenting evolution of channelized delta experiencing relative subsidence at a constant
rate with a constant input of water and weakly cohesive sediment. Experiment shares identical boundary conditions as TDB-12, except the amount of
polymer added to the input sediment for cohesion. Digital video was collected from camera above the basin. Images were taken with flow off at the end of
each run hour. Colored red sediment represents coarsest 10% of input sediment distribution. More details of experiment can be found in manuscript: Li, Q., Benson, W.M., Harlen, M., Robichaux, P., Sha, X., Xu, K., Straub, K.M., 2017, Influence of sediment cohesion on deltaic morphodynamics and stratigraphy over basin-filling time scale, Journal of Geophysical Research Earth Surface, v. 122, DOI: 10.1002/2017JF004216. Straub, K.M., Li, Q., Benson, W.M., 2015, Influence of sediment cohesion on deltaic shoreline dynamics and
bulk sediment retention: A laboratory study, Geophysical Research Letters, v. 42, DOI: 10.1002/2015GL066131.
Freeze cutting stratigraphy of TDB-13. Video of TSDS team freeze cutting stratigraphy from TDB-13 experiment. This experiment utilized a
sediment mixture developed by researchers at ExxonMobil and contains a fair amount of sub silt sized particles. Due to
the fine nature of the sediment, it drains water poorly, meaning traditional dry cutting methods are out. We lower a steel
wedge into the stratigraphy and fill the wedge with methanol and dry ice. This combination causes a reaction which lowers
the steels temperature to -78 degrees C. We then extract the wedge and stratigraphy frozen to it and clean the face up
before imaging. A fun process, but one that involves a good amount of labor.
Tulane Cohesion Movies