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Straub's Movies
Low cohesion delta undergoing pure aggradation
Video of laboratory experiments documenting evolution of channelized delta experiencing relative subsidence at a constant rate. Digital
video was collected from camera at an approximately 45 degree from vertical which was then post-processed to remove camera distortion to yield a close to
synoptic representation of the experimental basin. Video is presented at 360 times the actual experimental run-time. Video includes evolution of delta
between run hours 70-79. Blue dye added to water aids identification of flow field. More details of experiment can be found in
manuscript:
Wang, Y., Straub, K.M., Hajek, E.A., 2011, Scale dependant compensational stacking: an estimate of
autogenic timescales in channelized sedimentary deposits, Geology, v. 39(9), p 811-814, DOI: 10.1130/G32068.1.
More Turbidity Currents in Sinuous Channels
Video of laboratory experiments documenting interactions between turbidity currents and topography in aggrading
submarine channels of varying sinuosity. Digital video was collected from camera positioned directly above experimental basin and
therefore yield a close to synoptic representation of the channelized-overbank flow field. Video is presented at 4 times the actual
experimental time. Video includes experimental flows through channels with sinuosities of 1.00, 1.04, and 1.32. Each flow is clipped
to incorporate the passage of both the turbidity current head and dye injections. More details of experiment can be found in
manuscript:
Straub, K.M., Mohrig, D., Buttles, J., McElroy, B., Pirmez, C., 2011, Quantifying the influence of
channel sinuosity on the depositional mechanics of channelized turbidity currents: A laboratory study, Marine Petroleum Geology, v. 28, p. 744-760,
DOI:10.1016/j.marpetgeo.2010.05.014.
Backwards evolution of a seepage channel network in Bristol, FL
This movie shows the backwards evolution of the Florida network. Each colored polygon represents the geometric drainage
area associated with the nearest channel head. The speed at which channels are retracted is proportional to this area. Note especially
the simultaneous retraction of bifurcated channels to the original, unsplit, channel heads. Although we cannot be certain of the origin
of all channel heads, the occurrence of such tip-splitting events at all times suggests that the backwards evolution is broadly correct.
Growth reconstruction of a seepage channel network in Bristol, FL
This movie reconstructs the forward evolution of the Florida network. It contains the same information as above video, but without
the colored drainage areas. Note that the precise time of the birth of new channels by tip-splitting and side-branching must be obtained from the
backwards evolution of the above video. More details of this model can be found in manuscript:
Abrams, D.M., Lobkovsky, A.E., Petroff, A.P., Straub, K.M., McElroy, B.,
Mohrig, D.C., Kudrolli, A., Rothman, D.H., 2009, Growth laws for channel networks incised by groundwater flow,
Nature Geoscience, v. 2(3), p. 193-196, DOI: 10.1038/NGEO432.
Turbidity Currents in Sinuous Channel
Video of laboratory experiments documenting interactions between
turbidity currents and topography in aggrading sinuous submarine channels. Digital
video was collected from camera positioned directly above experimental basin and
therefore yield a close to synoptic representation of the channelized-overbank flow field.
Video is presented at 4 times the actual experimental time. Video includes experimental
flows 2 and 20. Each flow is clipped to incorporate the passage of both the
turbidity current head and dye injections. More details of experiment can be found in
manuscript:
Straub, K.M., Mohrig, D.C., Buttles, J., McElroy, B., Pirmez, C., 2008, Interactions between
turbidity currents and topography in aggrading sinuous submarine channels: A laboratory study, GSA
Bulletin, v. 120(3/4), p. 368-385, DOI: 10.1130/B25983.1.