Geolocation is 39.9522188, -75.1932137
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Title | Creator | Institution | Body | Date Last Updated | Resource Type | Coverage | Related Resources | Contributors | Keywords | Rights management | Data & Papers | Related Wikis |
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Rheology of sediment transport by a laminar flow | Morgane Houssais, Carlos Ortiz, Douglas Jerolmack, Douglas Durian | University of Pennsylvania |
In this experiment, a laminar flow shear a bed of particles, which are fully tracked, using Refractive Index Matching, and image analysis.
Dataset corresponding to data represented in the paper published at Nature Communications: Onset of sediment transport is a continuous transition driven by fluid shear and granular creep
by Morgane Houssais, Carlos P. Ortiz, Douglas J. Durian, and Douglas J. Jerolmack
The full rheology measurements were published a year later, by the same authors, in Physical Review E: https://journals.aps.org/pre/abstract/10.1103/PhysRevE.94.062609 |
Sunday, March 15, 2015 | dataset |
Location: Dates Collected: Sunday, March 15, 2015 |
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Name: Sediment Experimentalist contributor_email: |
granular flow, suspension flow, local rheology, annular flume, laminar, refractive index matching, bed load transport | CC-BY |
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Minibasin Formation Due to Sediment Loading Over a Mobile Substrate | Brandon Minton | The University of Texas at Austin | Wednesday, December 3, 2014 |
Location: Geolocation is 30.3877436, -97.72813300000001 Dates Collected: Wednesday, December 3, 2014 |
Name: Brandon Minton Institution: The University of Texas at Austin contributor_email: |
turbidity, mobile substrate, subsidence, minibasin | CC-BY | |||||
Architecture of a Delta Prograding on a Mobile Substrate | Jung, Eunsil | The University of Texas at Austin | Wednesday, December 3, 2014 |
Dates Collected: Wednesday, December 3, 2014 |
Name: Kim, Wonsuck Institution: The University of Texas at Austin contributor_email: |
delta, mobile substrate, Salt | CC-BY | |||||
Delft3D_Tides | Rossi, Valentina M. | Wednesday, December 3, 2014 |
Location: Geolocation is 30.267153, -97.74306079999997 Dates Collected: Wednesday, December 3, 2014 |
Name: Kim, Wonsuck Institution: The University of Texas at Austin contributor_email: |
CC-BY | |||||||
Lateral-tilting basin | Woong Mo Koo | The University of Texas at Austin | Wednesday, December 3, 2014 | dataset |
Location: Geolocation is 30.2849185, -97.7340567 Dates Collected: Monday, October 6, 2014 to Monday, November 17, 2014 |
Name: Wonsuck Kim Institution: The University of Texas at Austin Name: Valentina Rossi Institution: The University of Texas at Austin |
Deepwater deposits, lateral-tilting | CC-BY | ||||
Flood/Interflood Delta Evolution Experiments in STEP Basin | Litwin Miller, Kimberly | University of Texas at Austin | Wednesday, December 3, 2014 |
Location: Geolocation is 30.267153, -97.74306079999997 Dates Collected: Wednesday, December 3, 2014 |
Name: Kimberly Miller Institution: University of Texas at Austin contributor_email: |
delta, Floods, Walnut Shell | CC-BY | |||||
VeggieTales experiments | Piliouras, Anastasia | University of Texas at Austin |
We examined the effects of vegetation, vegetation density, and veg location on overall delta and channel dynamics. We conducted a series of experiments with a variety of seeding styles, including 1 unvegetated control run. Experiments were all conducted under the same water and sediment input conditions, with vegetation as the only variable. |
Wednesday, December 3, 2014 |
Location: Geolocation is 30.2806543, -97.7327641 Dates Collected: Sunday, September 1, 2013 to Wednesday, November 5, 2014 |
Name: Anastasia Piliouras Institution: University of Texas at Austin contributor_email: |
delta, vegetation | CC-BY | ||||
The Progradation of a Delta on a Mobile Substrate: Experiment | Carolina Baumanis | University of Texas at Austin |
We conducted a series of experiments at the University of Texas at Austin to discover the effect of a mobile substrate on an evolving delta. All of the runs had constant sediment supply, water supply, and base level, but varied mobile substrate thicknesses. |
Wednesday, December 3, 2014 | dataset |
Location: Geolocation is 30.3953085, -97.73627420000003 Dates Collected: Friday, June 1, 2012 to Friday, August 10, 2012 |
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stratigraphy, progradation, mobile substrate, experiment, delta | CC-BY | |||
Laboratory experiments simulating the geomorphic response to tectonic uplift | Lague, Dimitri, Crave, Alain, Davy, Philippe | Geosciences Rennes |
We present the results of an experimental study of topography dynamics under conditions of constant precipitation and uplift rate. The experiment is designed to develop a complete drainage network by the growth and propagation of erosion instabilities in response to tectonic perturbations. The quantitative analysis of topographic evolution is made possible by using telemetric lasers that perform elevation measurements at an excellent level of precision. We focus our study on the effect of initial surface organization and of uplift rate on both the transient dynamics and the steady state forms of topography. We show that the transient phase is strongly dependent on the initial internally drained area, which is found to decrease exponentially with time. The topography always reaches a steady state whose mean elevation depends linearly on uplift rate with a strictly positive value when uplift is zero. Steady state surfaces are characterized by a well-defined slope–area power law with a constant exponent of 0.12 and an amplitude that depends linearly on uplift rate with a strictly positive value when uplift is zero. These results are consistent with a stream power law erosion model that includes a nonnegligible threshold for particle detachment. Uncertainty regarding the sediment transport length is resolved by calibrating the transient dynamics with a surface process model. Reappraising published results on the linear dependency between mean elevation, or relief, and denudation rate, we suggest that an erosion threshold is worth considering for large-scale systems. |
Sunday, November 30, 2014 | dataset |
Location: Geolocation is 48.1132044, -1.6616030999999793 Dates Collected: Sunday, November 30, 2014 |
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Name: Sediment Experimentalist contributor_email: |
landscape evolution, topography, relief, experimental modeling, tectonic geomorphology | CC-BY |
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Scaling up debris-flow experiments on a centrifuge | Hung, Chi-Yao; Stark, Colin P., Capart, H.; | Lamont-Doherty Earth Observatory, Columbia University |
Boundary forces generated by debris flows can be powerful enough to erode bedrock and cause considerable damage to infrastructure during runout. Formulation of an erosion-rate law for debris flows is therefore a high priority, and it makes sense to build such a law around laboratory experiments. We scale up granular impact forces by running our experiments under enhanced gravity in a geotechnical centrifuge. Using a 40cm-diameter rotating drum spun at up to 100g, we generate debris flows with an effective depth of over several meters. By varying effective gravity from 1g to 100g we explore the scaling of granular flow forces and the consequent bed and wall erosion rates. The velocity and density structure of these granular flows is monitored using laser sheets, high-speed video, and particle tracking, and the progressive erosion of the boundary surfaces is measured by laser scanning.
For more information, contact Colin Stark at - cstark@ldeo.columbia.edu.
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Monday, November 10, 2014 | dataset |
Location: Geolocation is 40.8092739, -73.9598315 Dates Collected: Thursday, August 1, 2013 to Monday, November 10, 2014 |
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Name: Sediment Experimentalist contributor_email: |
debris flow, erosion, analogue modeling, physical modeling | CC-BY |
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