Three-dimensional displacement fields measured in a deforming granular-media surface by combined fringe projection and speckle photography

Barrientos, Bernardino; Cerca, Mariano; García-Márquez, Jorge; Hernández-Bernal, Caridad

doi:10.1088/1464-4258/10/10/104027

Cited by 23 publications

(10 citation statements)

References 39 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Subsidence in the physical models was monitored at constant time intervals of 15 s using an optical system that allows obtaining subtle changes (submilimetric) in the experimental relief using the ZEBRA software (based on the work by Barrientos et al, 2008). A structured light (black and white fringes) pattern was projected on the surface of the model and the digital images recorded by a CCD sensor.…”

Section: Experimental Subsidence Bowlmentioning

confidence: 99%

Physical experiments of land subsidence within a maar crater: insights for porosity variations and fracture localization

Cerca

Rocha²,

Carreón‐Freyre

et al. 2015

Proc. IAHS

View full text Add to dashboard Cite

Abstract. We present the results of a series of physical models aiming to reproduce rapid subsidence (at least 25 m in 30 years) observed in the sediments of a maar crater caused by extraction of groundwater in the interconnected adjacent aquifer. The model considered plausible variations in the geometry of the crater basement and the measured rate of groundwater extraction (1 m per year in the time interval from 2005 to 2011) in 15 wells located around the structure. The experiments were built within a rigid plastic bowl in which the sediments and rocks of the maar sequence were modeled using different materials: (a) plasticine for the rigid country rock, (b) gravel for the fractured country rock forming the diatreme fill and, (c) water saturated hollow glass microbeads for the lacustrine sedimentary fill of the crater. Water table was maintained initially at the surface of the sediments and then was allowed to flow through a hole made at the base of the rigid bowl. Water extraction provoked a sequence of gentle deformation, fracturing, and faulting of the surface in all the experiments. Vertical as well as lateral displacements were observed in the surface of the experiments. We discuss the results of 2 representative models. The model results reproduced the main geometry of the ring faults affecting the crater sediments and helps to explain the diversity of structures observed in relation with the diatreme geometry. The surface of the models was monitored continuously with an optical interferometric technique called structured light projection. Images collected at nearly constant time intervals were analyzed using the ZEBRA software and the obtained interferometric pairs permitted to analyze the full field subsidence in the model (submilimetric vertical displacements). The experiments were conducted at a continuous flow rate extraction and show a also a linear subsidence rate. Comparison among the results of the physical models and the fault system associated to subsidence in the maar show that fault geometry in the sedimentary sequence imitates closely the geometry of the volcanic basement.

show abstract

Section: Experimental Subsidence Bowlmentioning

confidence: 99%

Physical experiments of land subsidence within a maar crater: insights for porosity variations and fracture localization

Cerca

Rocha²,

Carreón‐Freyre

et al. 2015

Proc. IAHS

View full text Add to dashboard Cite

show abstract

“…Images of the Experiment 2 were processed for obtaining the surface topography during the evolution of the model using the optical technique described by Barrientos et al (2008) that allowed a more detailed analysis of the model evolution. Figure 6 illustrates this quantitative evolution of the model surface; the images were generated by comparing the reference surface of the model (Figure 6a) with the corresponding deformed image using interferometric techniques (Figure 6b to 6j).…”

Section: Resultsmentioning

confidence: 99%

Analogue model of gravity driven deformation in the salt tectonics zone of northeastern Mexico

et al. 2018

View full text Add to dashboard Cite

In the deep seated gravity-driven deformation systems of the Gulf of Mexico contemporaneous extension and contraction of the overburden is favored by mechanical decoupling from the basement along thick salt sequences (up to 4 km). The updip extension is located inland, on the continental shelf of northeast Mexico, and is characterized by extensional listric faults and roll-overs; the downdip shortening zone is located at the deep waters and is characterized by a fold and thrust belt detached above the salt layer. Two physical experiments are used to discuss some aspects of these gravity-driven systems. The experimental setup includes a motor-driven experimental table, an inclined brittle basement (1°), a silicone layer simulating the salt sequences, and sand layers simulating the pre-kinematic Jurassic-Cretaceous strata before Laramide shortening. Deformation resulted in further tilting of the basement (3° to 4°). After the onset of deformation, thin sand layers were added at regular time intervals simulating the syntectonic sedimentation. The experiments reproduced the geometry of the deformation at the frontal ramp characterized by a seaward vergent thrust and its associated deformed region (the Perdido fold belt). The fold and thrust belt localization was favored by the change in basement inclination (a built-in slope change). Key elements interpreted in one available section of the area were reproduced in the model: a) the presence of an antithethic roll-over in the extensional zone and, b) the basinward vergence of folds and thrusts observed in the downdip shortening zone in the mexican Perdido fold belt.

show abstract

“…The photographs obtained from the lateral wall were analysed using a digital image correlation (DIC) technique that permits us to estimate the vertical component of the displacement on a vertical section. DIC relies on the comparison of two images of the lateral wall, which correspond to two different states of deformation (Barrientos et al, 2008). The strain plane state between the reference and displaced images can be obtained by cross correlation.…”

Section: Experimental Fracturing Of Aquifer Systemsmentioning

confidence: 99%

Analogue model of ground ruptures due to groundwater pumping in an aquifer above a bedrock ridge

2020

View full text Add to dashboard Cite

We report preliminary results of physical experiments of rupture occurrence and propagation associated with land subsidence driven by groundwater pumping and compare our analogue model results with corresponding previously reported numerical results. In particular, we aim to test the development of tensile stresses above a bedrock ridge that forms the base of an aquifer system. The experiment reproduces the main deformation and ruptures observed in field cases and in the numerical analysis.

show abstract

Three-dimensional displacement fields measured in a deforming granular-media surface by combined fringe projection and speckle photography

Cited by 23 publications

References 39 publications

Physical experiments of land subsidence within a maar crater: insights for porosity variations and fracture localization

Physical experiments of land subsidence within a maar crater: insights for porosity variations and fracture localization

Analogue model of gravity driven deformation in the salt tectonics zone of northeastern Mexico

Analogue model of ground ruptures due to groundwater pumping in an aquifer above a bedrock ridge

Contact Info

Product

Resources

About