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Journal articles on the topic 'Slab tear'

Author: Grafiati
Published: 4 June 2021
Last updated: 31 January 2023

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1

Jolivet, Laurent, Armel Menant, Vincent Roche, Laetitia Le Pourhiet, Agnès Maillard, Romain Augier, Damien Do Couto, Christian Gorini, Isabelle Thinon, and Albane Canva. "Transfer zones in Mediterranean back-arc regions and tear faults." BSGF - Earth Sciences Bulletin 192 (2021): 11. http://dx.doi.org/10.1051/bsgf/2021006.

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Slab tearing induces localized deformations in the overriding plates of subduction zones and transfer zones accommodating differential retreat in back-arc regions. Because the space available for retreating slabs is limited in the Mediterranean realm, slab tearing during retreat has been a major ingredient of the evolution of this region since the end of the Eocene. The association of detailed seismic tomographic models and extensive field observations makes the Mediterranean an ideal natural laboratory to study these transfer zones. We review in this paper the various structures in back-arc regions differential retreat from the Alboran Sea to the Aegean-Anatolian region and discuss them with the help of 3D numerical models to better understand the partitioning of deformation between high-angle and low-angle faults, as well as the 3-D kinematics of deformation in the middle and lower crusts. Simple, archetypal, crustal-scale strike-slip faults are in fact rare in these contexts above slab tears. Transfer zones are in general instead wide deformation zones, from several tens to several hundred kilometers. A partitioning of deformation is observed between the upper and the lower crust with low-angle extensional shear zones at depth and complex association of transtensional basins at the surface. In the Western Mediterranean, between the Gulf of Lion and the Valencia basin, transtensional strike-slip faults are associated with syn-rift basins and lower crustal domes elongated in the direction of retreat (a-type domes), associated with massive magmatic intrusions in the lower crust and volcanism at the surface. On the northern side of the Alboran Sea, wide E-W trending strike-slip zones in the brittle field show partitioned thrusting and strike-slip faulting in the external zones of the Betics, and E-W trending metamorphic core complexes in the internal zones, parallel to the main retreat direction with a transition in time from ductile to brittle deformation. On the opposite, the southern margin of the Alboran Sea shows short en-échelon strike-slip faults. Deep structures are not known there. In the Aegean-Anatolian region, two main tear faults with different degrees of maturity are observed. Western Anatolia (Menderes Massif) and the Eastern Aegean Sea evolved above a major left-lateral tear in the Hellenic slab. In the crust, the differential retreat was accommodated mostly by low-angle shear zones with a constant direction of stretching and the formation of a-type high-temperature domes exhumed from the middle and lower crust. These low-angle shear zones evolve through time from ductile to brittle. On the opposite side of the Aegean region, the Corinth and Volos Rift as well as the Kephalonia fault offshore, accommodate the formation of a dextral tear fault. Here, only the brittle crust can be observed, but seismological data suggest low-angle shear zones at depth below the rifts. We discuss the rare occurrence of pure strike-slip faults in these contexts and propose that the high heat flow above the retreating slabs and more especially above slab tears favors a ductile behavior with distributed deformation of the crust and the formation of low-angle shear zones and high-temperature domes. While retreat proceeds, aided by tears, true strike-slip fault system may localize and propagate toward the retreating trench, ultimately leading to the formation of new plate boundary, as shown by the example of the North Anatolian Fault.
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2

Hale, Alina J., Klaus-D. Gottschaldt, Gideon Rosenbaum, Laurent Bourgouin, Matthieu Bauchy, and Hans Mühlhaus. "Dynamics of slab tear faults: Insights from numerical modelling." Tectonophysics 483, no. 1-2 (March 2010): 58–70. http://dx.doi.org/10.1016/j.tecto.2009.05.019.

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3

Jolivet, Laurent, Armel Menant, Pietro Sternai, Aurélien Rabillard, Laurent Arbaret, Romain Augier, Valentin Laurent, et al. "The geological signature of a slab tear below the Aegean." Tectonophysics 659 (September 2015): 166–82. http://dx.doi.org/10.1016/j.tecto.2015.08.004.

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4

Meighan, Hallie E., Jay Pulliam, Uri ten Brink, and Alberto M. López-Venegas. "Seismic evidence for a slab tear at the Puerto Rico Trench." Journal of Geophysical Research: Solid Earth 118, no. 6 (June 2013): 2915–23. http://dx.doi.org/10.1002/jgrb.50227.

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5

Sulaiman, M. I., P. A. Subakti, Haolia, D. Y. Fatimah, I. Madrinovella, A. Abdullah, D. A. Zaky, et al. "Early Results of Eastern Indonesia P-wave Tomography Study Using Regional Events." IOP Conference Series: Earth and Environmental Science 873, no. 1 (October 1, 2021): 012068. http://dx.doi.org/10.1088/1755-1315/873/1/012068.

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Abstract The tectonic system of Eastern Indonesia is controlled by several major and minor plates, such as Indo-Australian, Australian plate, and Pacific plates. This area is known for its complexity, and high seismic activity. This study tries to image the complex structures beneath this region by employing regional events data and seismic tomography methods. We used five years of regional events catalog provided by the Indonesian Agency of Meteorology, Climatology, and Geophysics. We have sorted 7336 events recorded between 120° – 136° longitude and 0° – 13°(-) latitude consisting of 46446 P and 15467 S wave arrival data. Relocated hypocenter map shows a better constrain location on seismicity along outer Bandar Arc. A dipping pattern of seismicity is seen that is going deeper to the Banda Sea. The seismicity map also images a steep angle pattern of seismicity that could be related to the subduction slab roll-back model at North of Wetar island. Interestingly, we spotted a seismicity gap in West Seram that could be linked with slab tear zone. The checker-board test suggests a proper resolution is still reliable to a depth of 200 km with a less interpretable model at a depth of 300 km. P-wave tomographic models image the high velocity dipping down going slab. The Banda slab is seen to subduct from south Timor Island to the north, from east Tanimbar and Aru Island to west part, and from north Seram Island to south. We observed the down-going slab meet from all directions at about 300 km beneath the Banda sea. P wave tomogram also shows the Timor Island slab has a steeper dip that agrees with the seismicity pattern. Near the Seram island, we identify a low-velocity anomaly zone infiltrate the Banda slab beneath the shallow part of West Seram, which was previously interpreted as slab tear zone. This study also noticed a higher velocity tomogram model at North of Wetar island that might indicate a back-arc thrust. Lastly, a low-velocity band is also exposed at a shallow depth close to the volcano chain along that Banda volcanic arc.
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6

Suhardja, Sandy K., Yosua Hotmaruli Lumban Gaol, Agus Abdullah, Andri Dian Nugraha, and Z. Zulfakriza. "Comparison of 3-D Raytracing and Finite Frequency Tomography." Jurnal Geofisika 17, no. 1 (September 3, 2019): 1. http://dx.doi.org/10.36435/jgf.v17i1.393.

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We performed 3-D seismic tomography using teleseismic arrival time at Southwest Mexico. The Mexican subduction zone results from successive fragmentation events that affected the ancient Farallon plate as various segments of the East Pacific rise approached the paleo-trench off western North America. The complexity in this region is related to two subducting oceanic plates, the Rivera and Cocos plates, that have different ages, compositions, convergence velocities and subduction dip angles. In this study, we compared the 3-D raytracing tomography model with finite frequency tomography model. Final models show the differences in amplitude and pattern between the raytracing and finite frequency. 3D raytracing models produced sharper images of fast velocity structures in the mantle. The deeper slabs are more coherent and show less broadening with depth than using 1D finite frequency kernels. However, although the finite frequency and 3-D ray tracing models show some differences in amplitude and pattern, the overall agreement of the models supports the interpretation of Yang et al. (2009) that slab rollback is occurring in South Western Mexico. One possible different interpretation between the raytracing and finite frequency theory results concerns the deep structure of the Rivera slab. The finite frequency models show that the Rivera slab is clearly observable at a depth of about 300km but fades away at greater depths. However, the 3-D ray tracing model shows a clear fast velocity band down to a depth of 400 km and thus our model does not support a slab tear of the Rivera plate above 400 km depth
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7

Zhou, Tihe, Ronald O’Malley, Hatem Zurob, Mani Subramanian, Sang-Hyun Cho, and Peng Zhang. "Control of Upstream Austenite Grain Coarsening during the Thin-Slab Cast Direct-Rolling (TSCDR) Process." Metals 9, no. 2 (February 1, 2019): 158. http://dx.doi.org/10.3390/met9020158.

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Thin-slab cast direct-rolling (TSCDR) has become a major process for flat-rolled production. However, the elimination of slab reheating and limited number of thermomechanical deformation passes leave fewer opportunities for austenite grain refinement, resulting in some large grains persisting in the final microstructure. In order to achieve excellent ductile to brittle transition temperature (DBTT) and drop weight tear test (DWTT) properties in thicker gauge high-strength low-alloy products, it is necessary to control austenite grain coarsening prior to the onset of thermomechanical processing. This contribution proposes a suite of methods to refine the austenite grain from both theoretical and practical perspectives, including: increasing cooling rate during casting, liquid core reduction, increasing austenite nucleation sites during the delta-ferrite to austenite phase transformation, controlling holding furnace temperature and time to avoid austenite coarsening, and producing a new alloy with two-phase pinning to arrest grain coarsening. These methodologies can not only refine austenite grain size in the slab center, but also improve the slab homogeneity.
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8

Argnani, Andrea. "Evolution of the southern Tyrrhenian slab tear and active tectonics along the western edge of the Tyrrhenian subducted slab." Geological Society, London, Special Publications 311, no. 1 (2009): 193–212. http://dx.doi.org/10.1144/sp311.7.

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9

Megahed, G. M., S. K. Paul, T. A. El-Bitar, and F. Ibrahim. "Development of X60/X70 Line Pipe Steels through EAF-Thin Slab Casting Technology at Ezz Flat Steel, Ain Sukhna, Egypt." Materials Science Forum 500-501 (November 2005): 261–68. http://dx.doi.org/10.4028/www.scientific.net/msf.500-501.261.

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API X60/X70 line pipe steels are characterized by their higher strength and excellent toughness properties, which are achieved through grain refinement by addition of micro-alloying elements and controlled rolling. Thin slab casting of Nb micro-alloyed steel is a great challenge to the steel producer because of possible transverse cracking of slabs. The major casting parameters, which affect transverse cracking, were critically examined and modified for production of defect free slabs. The hot strip mill parameters were also designed for controlled rolling of slabs to achieve the desired mechanical properties. Three heats (one X60 and two X70) of each 175 ton liquid steel were made and processed into 6, 8 and 10 mm hot rolled coils. In the heat of X60, Nb and Ti were used as micro-alloying elements where as vanadium was also added in X70 heats to achieve the desired strength. The YS/UTS ratio was designed to be below 0.9 by controlling the amount of Si and Mn. During slab casting, liquid core reduction (LCR) was used to reduce the slab thickness from 90 to 70 mm and to minimize the center line segregation and porosity. The slabs were heated and homogenized in a tunnel furnace at 1150 ±10°C before rolling in the roughing mill. The rolling procedure was designed to achieve the highest possible amount of deformation at the roughing stand for best conditioning of austenite before rolling in the finishing mill. 50% and 35% reductions in slab thickness were given for rolling of 6 and 10 mm coils respectively. The final thickness reduction was then distributed over 5-6 stands of the finishing mill depending on the coil thickness. All parameters were designed to achieve finish rolling temperature 850 ±10°C in the austenite region and very near to Ar3. After rolling, the steel was fast cooled to 570±10°C before coiling. Mechanical properties and microstructure evolutions were extensively investigated. The tensile properties particularly the elongation and YS/UTS ratio achieved were good. The CVN impact energy in transverse direction was found to be very high ranging from 220 to 330 Joules. Furthermore, the impact transition temperature (ITT) was found to be below -70 °C. The results of the drop weight tear test (DWTT) showed fully ductile behavior up to -40°C confirming the impact test results. SEM study was carried out to assess the fracture mechanism of impact-tested specimens at different temperatures.
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10

Rosenbaum, Gideon, Massimo Gasparon, Francesco P. Lucente, Angelo Peccerillo, and Meghan S. Miller. "Kinematics of slab tear faults during subduction segmentation and implications for Italian magmatism." Tectonics 27, no. 2 (April 2008): n/a. http://dx.doi.org/10.1029/2007tc002143.

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11

Miller, Meghan S., Alexei Gorbatov, and Brian L. N. Kennett. "Three-dimensional visualization of a near-vertical slab tear beneath the southern Mariana arc." Geochemistry, Geophysics, Geosystems 7, no. 6 (June 2006): n/a. http://dx.doi.org/10.1029/2005gc001110.

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12

Lynner, Colton, Megan L. Anderson, Daniel E. Portner, Susan L. Beck, and Hersh Gilbert. "Mantle flow through a tear in the Nazca slab inferred from shear wave splitting." Geophysical Research Letters 44, no. 13 (July 13, 2017): 6735–42. http://dx.doi.org/10.1002/2017gl074312.

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13

Li, Hui Rong, Li Gen Sun, and Li Qun Ai. "The Overview on Sticking Breakout Behavior for Thin Slab Continuous Casting." Advanced Materials Research 1022 (August 2014): 201–4. http://dx.doi.org/10.4028/www.scientific.net/amr.1022.201.

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Breakout is the most detrimental event associated with the continuous casting process, with the overview of the sticking breakout behavior, a lot of valuable things had been acquired. For the mechanism of the sticking breakout forming, the key for the breakout prevention is decreasing the probability of the hot spot; the content of the carbon or alloy element, the wear and tear of the mould corner, the mould flux, the fluctuation of the casting speed and the fluctuation of the meniscus are easy to cause the sticking; and with high casting speed and the funnel mould, the thin slab continuous casting is more easier to lead to sticking breakout than the normal strand.
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14

Guillaume, B., L. Husson, F. Funiciello, and C. Faccenna. "The dynamics of laterally variable subductions: laboratory models applied to the Hellenides." Solid Earth Discussions 5, no. 1 (April 9, 2013): 315–63. http://dx.doi.org/10.5194/sed-5-315-2013.

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Abstract. We design three-dimensional dynamically self-consistent laboratory models of subduction to analyze the relationships between overriding plate deformation and subduction dynamics in the upper mantle. We investigate the effects of the subduction of a lithosphere of laterally variable buoyancy on the temporal evolution of trench kinematics and shape, horizontal flow at the top of the asthenosphere, dynamic topography and deformation of the overriding plate. The interface between the two units, analogue to a trench-perpendicular tear fault between a negatively buoyant oceanic plate and positively buoyant continental one, is either fully-coupled or shear-stress free. Differential rates of trench retreat, in excess of 6 cm yr−1 between the two units, trigger a more vigorous mantle flow above the oceanic slab unit than above the continental slab unit. The resulting asymmetrical sublithospheric flow shears the overriding plate in front of the tear fault, and deformation gradually switches from extension to transtension through time. The consistency between our models results and geological observations suggests that the Late Cenozoic deformation of the Aegean domain, including the formation of the North Aegean Trough and Central Hellenic Shear zone, results from the spatial variations in the buoyancy of the subducting lithosphere. In particular, the lateral changes of the subduction regime caused by the Early Pliocene subduction of the old oceanic Ionian plate redesigned mantle flow and excited an increasingly vigorous dextral shear underneath the overriding plate. The models suggest that it is the inception of the Kefalonia Fault that caused the transition between an extension dominated tectonic regime to transtension, in the North Aegean, Mainland Greece and Peloponnese. The subduction of the tear fault may also have helped the propagation of the North Anatolian Fault into the Aegean domain.
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15

Guillaume, B., L. Husson, F. Funiciello, and C. Faccenna. "The dynamics of laterally variable subductions: laboratory models applied to the Hellenides." Solid Earth 4, no. 2 (July 10, 2013): 179–200. http://dx.doi.org/10.5194/se-4-179-2013.

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Abstract. We designed three-dimensional dynamically self-consistent laboratory models of subduction to analyse the relationships between overriding plate deformation and subduction dynamics in the upper mantle. We investigated the effects of the subduction of a lithosphere of laterally variable buoyancy on the temporal evolution of trench kinematics and shape, horizontal flow at the top of the asthenosphere, dynamic topography and deformation of the overriding plate. Two subducting units, which correspond to a negatively buoyant oceanic plate and positively buoyant continental one, are juxtaposed via a trench-perpendicular interface (analogue to a tear fault) that is either fully-coupled or shear-stress free. Differential rates of trench retreat, in excess of 6 cm yr−1 between the two units, trigger a more vigorous mantle flow above the oceanic slab unit than above the continental slab unit. The resulting asymmetrical sublithospheric flow shears the overriding plate in front of the tear fault, and deformation gradually switches from extension to transtension through time. The consistency between our models results and geological observations suggests that the Late Cenozoic deformation of the Aegean domain, including the formation of the North Aegean Trough and Central Hellenic Shear zone, results from the spatial variations in the buoyancy of the subducting lithosphere. In particular, the lateral changes of the subduction regime caused by the Early Pliocene subduction of the old oceanic Ionian plate redesigned mantle flow and excited an increasingly vigorous dextral shear underneath the overriding plate. The models suggest that it is the inception of the Kefalonia Fault that caused the transition between an extension dominated tectonic regime to transtension, in the North Aegean, Mainland Greece and Peloponnese. The subduction of the tear fault may also have helped the propagation of the North Anatolian Fault into the Aegean domain.
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16

Subakti, P. A., M. I. Sulaiman, D. Y. Faimah, I. Madrinovella, I. Herawati, H. M. Lubis, S. K. Suhardja, et al. "Preliminary Results of Regional P and S Wave Tomography at Seram, Indonesia." IOP Conference Series: Earth and Environmental Science 873, no. 1 (October 1, 2021): 012066. http://dx.doi.org/10.1088/1755-1315/873/1/012066.

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Abstract The Seram Trough is located in the northern part of Indonesia and has a complex tectonic setting. The uniqueness of these regions lies in the U-shape subduction system. Several models have been proposed in this region, such as one subduction system that has been rotated 90° or 180°, two subduction systems, and one subduction that having a slab roll-back that causes extension systems. In this study, we try to invert velocity and seismicity using double-difference tomography with the target of better imaging the sub-surface structure in the region. We use data catalogue collection from the Indonesian Agency of Meteorology, Climatology, and Geophysics. The length of data is 4 years from January 2015 to December 2019 from 16 permanent stations. Earthquake relocations show a focused hypocenter distribution at shallow depth, and we interpreted some of these shallow depth events are related to the magmatic activity. Event distribution also displays a steep angle of seismicity pattern that represents the dipping subduction slab. Inverted Tomography models show a band of faster velocity models that dip from North to South, suggesting a subductions slab. We also observe a possibility of a tear in the slab from the seismicity pattern and tomogram model. The slower velocity perturbation is seen at shallow depth that may associate with magmatic and frequent shallow seismicity. A possibility of partial melting is also seen with low-velocity zone at a depth of 70 km next to the fast dipping velocity.
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17

Meighan, Hallie E., and Jay Pulliam. "Seismic anisotropy beneath the northeastern Caribbean: implications for the subducting North American lithosphere." Bulletin de la Société Géologique de France 184, no. 1-2 (January 1, 2013): 67–76. http://dx.doi.org/10.2113/gssgfbull.184.1-2.67.

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Abstract Active plate boundaries in the Caribbean form a complex tectonic environment that includes transform and subduction zones. The Caribbean-North American plate boundary is one such active margin, where subduction transitions from arc- to oblique-type off the northeast coast of Puerto Rico. Understanding mantle flow in this region will not only help determine the nature of tectonic activity and mantle dynamics that control these margins, but will also aid our understanding of the fate of subducting lithosphere. The existence of tears, windows, and gaps in subducting slabs has been proposed at various locations around the world but few have been confirmed. Since mantle flow and crustal deformation are believed to produce seismic anisotropy in the asthenosphere and lithosphere, searching for changes in, for example, SKS splitting parameters can help identify locations at which subducting slabs have been disrupted. Several lines of evidence support the notion of a slab tear within the subducting North American plate at this transition zone, including the counter-clockwise rotation of the Puerto Rico microplate over the past ~10 Ma, clusters of small seismic events, and trench collapse initiating ~3.3 m.y. Here we present results from a detailed investigation of seismic anisotropy from 28 stations across six networks in the Northeast Caribbean that support the hypothesis of a significant slab gap in the vicinity of the U.S. and British Virgin islands. A regional synthesis of our results reveals fast shear wave polarizations that are generally oriented parallel to the plate boundary with intermediate to high SH-SV delay times. For example, polarization directions are oriented roughly NE-SW along the bulk of the Lesser Antilles, E-W along the Puerto Rico trench and the northern Lesser Antilles, and NW-SE beneath Hispaniola. Beneath the U.S. and British Virgin Islands, however, the fast polarization direction differs markedly from the regional pattern, becoming almost perpendicular to the plate boundary. Stations on Anegada, British Virgin islands and St. Croix, U.S. Virgin islands show a fast polarization direction that is oriented nearly NNE-SSW and smaller delay times than surrounding stations. These results suggest that mantle flow is redirected NE-SW at this location through a gap in the subducted lithosphere of the North American plate.
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18

Wang, Hao, Yan Ping Bao, Min Wang, Hang Hang An, and Cheng Su. "Effect of Slab Centerline Segregation on DWTT Properties of 22mm Thick X80M Hot Rolled Steel Strip." Materials Science Forum 913 (February 2018): 304–10. http://dx.doi.org/10.4028/www.scientific.net/msf.913.304.

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The replacement of 22mm thick X80M hot rolled strip for the traditional heavy plate production technology has remarkable advantages in improving the yield, reducing the cost of manufacturing and improving the outer diameter adjustment of pipeline. Low temperature anti Drop Weight Tear Test (for short DWTT) performs one of the key research problems of 2250mm hot rolling line production of this specification. Aiming at the problem of the substandard performance of rolled DWTT development process, the slab fracture morphology of different proportion and slab thickness direction component segregation degree of system were analyzed through the electron microscope. The results showed that the thickness of steel strip was serious segregation and is the main factor affecting the performance of DWTT. By optimizing the caster arc alignment and secondary cooling water, then improving the central segregation effect, the performance of DWTT can be effectively improved, and a stable development and production of 22mm thickness X80M pipeline steel hot rolledstrip can be achieved.
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19

Castellanos, Jorge C., Robert W. Clayton, and Xyoli Pérez-Campos. "Imaging the Eastern Trans-Mexican Volcanic Belt With Ambient Seismic Noise: Evidence for a Slab Tear." Journal of Geophysical Research: Solid Earth 123, no. 9 (September 2018): 7741–59. http://dx.doi.org/10.1029/2018jb015783.

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20

Burkett, Erin R., and Magali I. Billen. "Three-dimensionality of slab detachment due to ridge-trench collision: Laterally simultaneous boudinage versus tear propagation." Geochemistry, Geophysics, Geosystems 11, no. 11 (November 2010): n/a. http://dx.doi.org/10.1029/2010gc003286.

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21

Piccinini, D., N. Piana Agostinetti, G. Saccorotti, A. Fiaschi, L. Matassoni, and M. Morelli. "Orogen-parallel variability in 3D seismicity distribution, Northern Apennines (Italy): Evidence for a slab tear fault?" Journal of Geodynamics 82 (December 2014): 110–17. http://dx.doi.org/10.1016/j.jog.2014.09.005.

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22

Karaoğlu, Özgür, and Cahit Helvacı. "Isotopic evidence for a transition from subduction to slab-tear related volcanism in western Anatolia, Turkey." Lithos 192-195 (April 2014): 226–39. http://dx.doi.org/10.1016/j.lithos.2014.02.006.

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23

Piana Agostinetti, Nicola. "The structure of the Moho in the Northern Apennines: Evidence for an incipient slab tear fault?" Tectonophysics 655 (August 2015): 88–96. http://dx.doi.org/10.1016/j.tecto.2015.05.013.

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24

Kassaras, I., V. Kapetanidis, A. Karakonstantis, and P. Papadimitriou. "Deep structure of the Hellenic lithosphere from teleseismic Rayleigh-wave tomography." Geophysical Journal International 221, no. 1 (January 8, 2020): 205–30. http://dx.doi.org/10.1093/gji/ggz579.

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SUMMARY This research provides new constraints on the intermediate depth upper-mantle structure of the Hellenic lithosphere using a three-step Rayleigh-wave tomography. Broadband waveforms of about 1000 teleseismic events, recorded by ∼200 permanent broad-band stations between 2010 and 2018 were acquired and processed. Through a multichannel cross-correlation technique, the fundamental mode Rayleigh-wave phase-velocity dispersion curves in the period range 30–90 s were derived. The phase-velocities were inverted and a 3-D shear velocity model was obtained down to the depth of 140 km. The applied method has provided 3-D constraints on large-scale characteristics of the lithosphere and the upper mantle of the Hellenic region. Highlighted resolved features include the continental and oceanic subducting slabs in the region, the result of convergence between Adria and Africa plates with the Aegean. The boundary between the oceanic and continental subduction is suggested to exist along a trench-perpendicular line that connects NW Peloponnese with N. Euboea, bridging the Hellenic Trench with the North Aegean Trough. No clear evidence for trench-perpendicular vertical slab tearing was resolved along the western part of Hellenic Subduction Zone; however, subcrustal seismicity observed along the inferred continental–oceanic subduction boundary indicates that such an implication should not be excluded. The 3-D shear velocity model supports an N–S vertical slab tear beneath SW Anatolia that justifies deepening, increase of dip and change of dip direction of the Wadati-Benioff Zone. Low velocities found at depths <50 km beneath the island and the backarc, interrelated with recent/remnant volcanism in the Aegean and W. Anatolia, are explained by convection from a shallow asthenosphere.
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25

McLeod, O. E., M. Brenna, R. M. Briggs, and A. Pittari. "Slab tear as a cause of coeval arc-intraplate volcanism in the Alexandra Volcanic Group, New Zealand." Lithos 408-409 (January 2022): 106564. http://dx.doi.org/10.1016/j.lithos.2021.106564.

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26

Mukhopadhyay, Basab, and Sujit Dasgupta. "Genesis of a new slab tear fault in the Indo-Australian plate, offshore northern Sumatra, Indian ocean." Journal of the Geological Society of India 83, no. 5 (May 2014): 493–500. http://dx.doi.org/10.1007/s12594-014-0076-4.

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27

Fan, Jian-ke, Shi-guo Wu, and George Spence. "Tomographic evidence for a slab tear induced by fossil ridge subduction at Manila Trench, South China Sea." International Geology Review 57, no. 5-8 (June 13, 2014): 998–1013. http://dx.doi.org/10.1080/00206814.2014.929054.

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28

Dougherty, Sara L., and Robert W. Clayton. "Seismicity and structure in central Mexico: Evidence for a possible slab tear in the South Cocos plate." Journal of Geophysical Research: Solid Earth 119, no. 4 (April 2014): 3424–47. http://dx.doi.org/10.1002/2013jb010883.

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Bianchi, Irene, Francesco Pio Lucente, Massimo Di Bona, Aladino Govoni, and Nicola Piana Agostinetti. "Crustal structure and deformation across a mature slab tear zone: the case of southern Tyrrhenian subduction (Italy)." Geophysical Research Letters 43, no. 24 (December 20, 2016): 12,380–12,388. http://dx.doi.org/10.1002/2016gl070978.

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Şahin, Şakir, and Jülide Parlak. "The Determination of Subduction Geometry under the Aegean-Anatolian Plate along Aegean and Cyprean Arcs in the Eastern Mediterranean." International Journal of Advanced Engineering and Management Research 07, no. 04 (2022): 80–104. http://dx.doi.org/10.51505/ijaemr.2022.7407.

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The southwestern Anatolia is part of the Aegean extensional province, located in a seismically active convergent zone between the African and Eurasian Plates in the Eastern Mediterranean. This region is one of the most active and swiftly deforming domains of the Alpine–Himalayan mountain belt in Turkey. The plate boundary is shaped by the subduction of the African Plate under the Aegean-Anatolian plate consists of the Aegean and Cyprean arcs. The two separate slabs occurred along the plate border related to these arcs. These subducted slabs are separated by a gap beneath Western Anatolia. These arcs intersect in the eastern Mediterranean region and form the tectonic structures, north cusps, the Isparta Angle depending on the subduction. The Isparta Angle caused by the slab is located to the North of Antalya Bay as reverse V shaped. In this study, 3D seismic tomography method was applied to determine the subduction geometry of slabs along the Aegean and Cyprean arcs in the Eastern Mediterranean region. The 3- Dtomographic results obtained by using the arrival times data collected 39,059 earthquakes have revealed concrete results about subduction zones. P wave velocity structure has been compared with the tectonic structures. The tomographic results show that two separate slabs occurred along Aegean and Cyprean arcs. The tear zone between these two slabs is the Fethiye Burdur Fault Zone (FBFZ) and the Astenospheric upwelling occurs in the Fethiye Bay and continues northward from there. It has been determined that there are two slabs dipping to the northeast under the Antalya Bay and to the north under the Gökova Gulf. Based on the tomographic results, it has been determined that the subduction in these region continues to the depth of ~ 100 km. The subducted African lithosphere plays important role in the evolution of southwest Anatolian tectonic structures.
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Cao, Lingmin, Zhi Wang, Shiguo Wu, and Xiang Gao. "A new model of slab tear of the subducting Philippine Sea Plate associated with Kyushu–Palau Ridge subduction." Tectonophysics 636 (December 2014): 158–69. http://dx.doi.org/10.1016/j.tecto.2014.08.012.

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32

Gutscher, Marc-André, Stephane Dominguez, Bernard Mercier de Lepinay, Luis Pinheiro, Flora Gallais, Nathalie Babonneau, Antonio Cattaneo, et al. "Tectonic expression of an active slab tear from high-resolution seismic and bathymetric data offshore Sicily (Ionian Sea)." Tectonics 35, no. 1 (January 2016): 39–54. http://dx.doi.org/10.1002/2015tc003898.

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Ascione, Alessandra, Sabatino Ciarcia, Valentino Di Donato, Stefano Mazzoli, and Stefano Vitale. "The Pliocene-Quaternary wedge-top basins of southern Italy: an expression of propagating lateral slab tear beneath the Apennines." Basin Research 24, no. 4 (December 7, 2011): 456–74. http://dx.doi.org/10.1111/j.1365-2117.2011.00534.x.

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34

Mukhopadhyay, Basab, Sujit Dasgupta, and Pralay Mukherjee. "Slab tear and tensional fault systems in the Sunda–Andaman Benioff zone: implications on tectonics and potential seismic hazard." Geomatics, Natural Hazards and Risk 7, no. 3 (February 19, 2015): 1129–46. http://dx.doi.org/10.1080/19475705.2015.1011242.

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35

Honsberger, I. W., J. Laird, and J. E. Johnson. "A Laurentian margin subduction perspective: Geodynamic constraints from phase equilibria modeling of barroisite greenstones, northern USA Appalachians." GSA Bulletin 132, no. 11-12 (April 20, 2020): 2587–605. http://dx.doi.org/10.1130/b35456.1.

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Abstract Phase equilibria modeling of sodic-calcic amphibole-epidote assemblages in greenstones in the northern Appalachians, USA, is compatible with relatively shallow subduction of the early Paleozoic Laurentian margin along the Laurentia-Gondwana suture zone during closure of a portion of the Iapetus Ocean basin. Pseudosection and isopleth calculations demonstrate that peak metamorphic conditions ranged between 0.65 GPa, 480 °C and 0.85 GPa, 495 °C down-dip along the subducted Laurentian continental margin between ∼20 km and ∼30 km depth. Quantitative petrological data are explained in the context of an Early Ordovician geodynamic model involving shallow subduction of relatively young, warm, and buoyant Laurentian margin continental-oceanic lithosphere and Iapetus Ocean crust beneath a relatively warm and wet peri-Gondwanan continental arc. A relatively warm subduction zone setting may have contributed to the formation of a thin, ductile metasedimentary rock-rich channel between the down-going Laurentian slab and the overriding continental arc. This accretionary channel accommodated metamorphism and tectonization of continental margin sediments and mafic volcanic rocks (greenstones) of the Laurentian margin and provided a pathway for exhumation of serpentinite slivers and rare eclogite blocks. Restricted asthenospheric flow in the forearc mantle wedge provides one explanation for the lack of ophiolites and absence of a well-preserved ultra-high-pressure terrane in central and northern Vermont. Exhumation of the subducted portion of the Laurentian margin may have been temperature triggered due to increased asthenospheric flow following a slab tear at relatively shallow depths.
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36

Kosarev, A. M., A. G. Vladimirov, A. I. Khanchuk, D. N. Salikhov, V. B. Kholodnov, T. A. Osipova, G. A. Kallistov, I. B. Seravkin, I. R. Rakhimov, and G. T. Shafigullina. "DEVONIAN-CARBONIFEROUS MAGMATISM AND METALLOGENY IN THE SOUTH URAL ACCRETIONARY-COLLISIONAL SYSTEM." Geodynamics & Tectonophysics 12, no. 2 (June 23, 2021): 365–91. http://dx.doi.org/10.5800/gt-2021-12-2-0529.

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The oceanic stage in the history of the South Urals completed in the Ordovician – Early Silurian. The Ordovician through Devonian events in the region included the formation of an island arc in the East Ural zone from the Middle Ordovician to Silurian; westward motion of the subduction zone in the Late Silurian – Early Devonian and the origin of a trench along the Main Ural Fault and the Uraltau Uplift; volcanic eruptions and intrusions in the Magnitogorsk island arc system in the Devonian. The Middle-Late Paleozoic geodynamic evolution of uralides and altaides consisted in successive alternation of subduction and collisional settings at the continent-ocean transition. The greatest portion of volcanism in the major Magnitogorsk zone was associated with subduction and correlated in age and patterns of massive sulfide mineralization (VMS) with Early – Middle Devonian ore-forming events in Rudny Altai. Within-plate volcanism at the onset of volcanic cycles records the Early (D1e2) and Middle (D2ef2) Devonian slab break off. The volcanic cycles produced, respectively, the Buribay and Upper Tanalyk complexes with VMS mineralization in the Late Emsian; the Karamalytash complex and its age equivalents in the Late Eifelian – Early Givetian, as well as the lower Ulutau Formation in the Givetian. Slab break off in the Late Devonian – Early Carboniferous obstructed the Magnitogorsk island arc and supported asthenospheric diapirism. A new subduction zone dipping westward and the Aleksandrovka island arc formed in the Late Devonian – Early Carboniferous. The Early Carboniferous collision and another event of obstructed subduction led to a transform margin setting corresponding to postcollisional relative sliding of plates that produced another slab tear. Postcollisional magmatism appears as alkaline gabbro-granitic intrusives with related rich Ti-magnetite mineralization (C1). Transform faulting persisted in the Middle Carboniferous through Permian, when the continent of Eurasia completed its consolidation. The respective metallogenic events included formation of Cu-Ni picritic dolerites (C2–3), as well as large-scale gold and Mo-W deposits in granites (P1–2).
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37

Morell, K. D., T. W. Gardner, D. M. Fisher, B. D. Idleman, and H. M. Zellner. "Active thrusting, landscape evolution, and late Pleistocene sector collapse of Baru Volcano above the Cocos-Nazca slab tear, southern Central America." Geological Society of America Bulletin 125, no. 7-8 (April 25, 2013): 1301–18. http://dx.doi.org/10.1130/b30771.1.

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38

Jati Widiatama, Angga, Happy Christin Natalia, Rinaldi Ikhram, Lauti Dwita Santy, Joko Wahyudiono, Lanang Rangga Setia Wiguna, and Syifa Faranabila. "Various sources of rare earth element enrichment at Manamas volcanic rock, Timor Island." IOP Conference Series: Earth and Environmental Science 882, no. 1 (November 1, 2021): 012044. http://dx.doi.org/10.1088/1755-1315/882/1/012044.

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Abstract Manamas volcanic rock formed due to crustal thinning in fore arc setting. This research aims to provide information and the enrichment process of rare earth elements in Manamas Formation on the Timor Island and their tectonic implication. Manamas volcanic rock exposed in Bihati River, Baun, Timor consists of two different types of basalts, namely alkaline basalt and sub alkaline basalt. Analysis using ICP-MS method shows enrichment in large ion lithophile element and high field strength element. Subalkaline basalt has N-MORB patterns and alkaline basalt have OIB patterns. The Nb element is relatively impoverished that indicates influence of subduction activities. Thorium and uranium elements also show significant enrichment, due to sedimentary rocks contamination or continental crust or directly from the asthenosphere due to magma upwelling. The two distinctive patterns interpreted due to slab tear phenomenon beneath Timor Island during Australia oceanic plate subduction and recycled oceanic crust beneath Banda Arc.
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39

Zhang, Chuan Guo, Qi Jie Zhai, and Lei Zheng. "Effect of Reheating and Deformation Processes on DWTT Performance for Heavy Gauge Pipeline Steel." Materials Science Forum 921 (May 2018): 149–56. http://dx.doi.org/10.4028/www.scientific.net/msf.921.149.

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DWTT (Drop weigh tear test) is an effective way to evaluate the fracture propagation for pipeline steel. The effects of slab reheating temperature, soaking time, single pass reduction ratio during recrystallization zone rolling and transfer bar ratio during non-recrystallization zone rolling on DWTT performance were studied for heavy gauge pipeline steel. And the grain refinement and toughening mechanism were discussed. It was found that the grain in the core of the plate can be refined by reducing the reheating temperature, increasing the single pass reduction ratio during recrystallization zone rolling and setting suitable transfer bar ratio during non-recrystallization zone rolling, which promote the DWTT property improvement for heavy gauge pipeline steel. The 30.9mm heavy gauge pipeline steel plate was industrial produced and the X70 UOE welded pipe with dimension in Φ1219×30.9mm was manufactured. The DWTT 85%FATT (fracture appearance transition temperature) of pipe body is as low as -20°C.
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40

AGARD, P., J. OMRANI, L. JOLIVET, H. WHITECHURCH, B. VRIELYNCK, W. SPAKMAN, P. MONIÉ, B. MEYER, and R. WORTEL. "Zagros orogeny: a subduction-dominated process." Geological Magazine 148, no. 5-6 (July 5, 2011): 692–725. http://dx.doi.org/10.1017/s001675681100046x.

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AbstractThis paper presents a synthetic view of the geodynamic evolution of the Zagros orogen within the frame of the Arabia–Eurasia collision. The Zagros orogen and the Iranian plateau preserve a record of the long-standing convergence history between Eurasia and Arabia across the Neo-Tethys, from subduction/obduction processes to present-day collision (from ~ 150 to 0 Ma). We herein combine the results obtained on several geodynamic issues, namely the location of the oceanic suture zone, the age of oceanic closure and collision, the magmatic and geochemical evolution of the Eurasian upper plate during convergence (as testified by the successive Sanandaj–Sirjan, Kermanshah and Urumieh–Dokhtar magmatic arcs), the P–T–t history of the few Zagros blueschists, the convergence characteristics across the Neo-Tethys (kinematic velocities, tomographic constraints, subduction zones and obduction processes), together with a survey of recent results gathered by others. We provide lithospheric-scale reconstructions of the Zagros orogen from ~ 150 to 0 Ma across two SW–NE transects. The evolution of the Zagros orogen is also compared to those of the nearby Turkish and Himalayan orogens. In our geotectonic scenario for the Zagros convergence, we outline three main periods/regimes: (1) the Mid to Late Cretaceous (115–85 Ma) corresponds to a distinctive period of perturbation of subduction processes and interplate mechanical coupling marked by blueschist exhumation and upper-plate fragmentation, (2) the Paleocene–Eocene (60–40 Ma) witnesses slab break-off, major shifts in arc magmatism and distributed extension within the upper plate, and (3) from the Oligocene onwards (~ 30–0 Ma), collision develops with a progressive SW migration of deformation and topographic build-up (Sanandaj–Sirjan Zone: 20–15 Ma, High Zagros: ~12–8 Ma; Simply Folded Belt: 5–0 Ma) and with partial slab tear at depths (~10 Ma to present). Our reconstructions underline the key role played by subduction throughout the whole convergence history. We finally stress that such a long-lasting subduction system with changing boundary conditions also makes the Zagros orogen an ideal natural laboratory for subduction processes.
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41

Chen, JianLin, JiFeng Xu, JiangBo Ren, and XiaoXiao Huang. "Late Triassic E-MORB-like basalts associated with porphyry Cu-deposits in the southern Yidun continental arc, eastern Tibet: Evidence of slab-tear during subduction?" Ore Geology Reviews 90 (November 2017): 1054–62. http://dx.doi.org/10.1016/j.oregeorev.2016.12.006.

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42

Mazzotti, S., P. Henry, X. LePichon, and T. Sagiya. "Strain partitioning in the zone of transition from Nankai subduction to Izu–Bonin collision (Central Japan): implications for an extensional tear within the subducting slab." Earth and Planetary Science Letters 172, no. 1-2 (October 1999): 1–10. http://dx.doi.org/10.1016/s0012-821x(99)00189-2.

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43

Alali, Akeel, David Li, Sandra Monteiro, and Hema Choudur. "Feasibility of high resolution ultrasound for SLAP tears of the shoulder compared to MR arthrogram." BJR|Open 1, no. 1 (July 2019): 20190007. http://dx.doi.org/10.1259/bjro.20190007.

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Objectives: The purpose of this prospective pilot study was to evaluate the feasibility and accuracy of high resolution ultrasound in the detection of superior labral anteroposterior (SLAP) tears of the shoulder compared to MR arthrogram. Methods and materials: 48 adult patients were included in the study. All patients had high resolution ultrasound of the superior labrum and biceps labral anchor prior to MR arthrogram. Ultrasound and MR arthrograms were evaluated separately for the presence or absence of SLAP tear using the same grading. The presence or absence of a tear and grading of the tears on MR arthrograms and ultrasound were compared and evaluated using κ statistics. Results: Both MRI and ultrasound demonstrated a SLAP tear in 27 of the 48 patients. MRI and ultrasound were in agreement on the absence of a tear in 19 patients. There was a disagreement between MRI and ultrasound in 2 of the 48 patients regarding the existence of a tear. The two modalities demonstrated substantial agreement on the presence or absence of a tear ( κ = 91.4 %, p < 0.001) as well as the grading of the tear ( κ = 84.4 %, p < 0.001). Conclusions: In this pilot study, the feasibility and accuracy of high resolution ultrasound for SLAP tears were evaluated and compared with MR arthrogram. MRI and ultrasound demonstrated substantial agreement on the presence or absence of SLAP tears and grading of the tears. Advances in knowledge: This pilot study explores and supports the use of ultrasound as a screening tool for SLAP tears, especially as it is readily available, fast and inexpensive.
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Hu, Fangyang, Shuwen Liu, Wanyi Zhang, Zhengbin Deng, and Xu Chen. "A westward propagating slab tear model for Late Triassic Qinling Orogenic Belt geodynamic evolution: Insights from the petrogenesis of the Caoping and Shahewan intrusions, central China." Lithos 262 (October 2016): 486–506. http://dx.doi.org/10.1016/j.lithos.2016.07.034.

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45

Kumar, Debangshu, and Bishal Kundu. "Comparison of outcome following knee immobilization versus no immobilization in the immediate post operative period following arthroscopic anterior cruciate ligament reconstruction." International Surgery Journal 9, no. 10 (September 28, 2022): 1731. http://dx.doi.org/10.18203/2349-2902.isj20222598.

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Background: Post operative bracing following ACL reconstruction has been traditionally used in post operative period to reduce pain limit knee range of motion to protect against valgus and varus stress. There is a lack of consensus in published literature regarding knee immobilization. The aim of this study is to compare the functional outcome and pain control in patients using knee immobilizer with those not using them in immediate post operative period.Methods: A total of 60 patients admitted with ACL tear who were admitted from January 2020 to August 2021 were enrolled in this study and randomised into two groups, given knee immobilizer or no immobilizer following arthroscopic ACL reconstruction. Patients were assessed for pain, knee range of motion and functional outcome with 6-month follow-up.Results: VAS score for pain was significantly lower for knee brace users (p=0.24) on post-op day2 but there was no significant difference on subsequent measurements. Also, the IKDC Score, arc of motion of knee joint and complication rate did not show significant difference between the two groups.Conclusions: Based on this study, the use of a knee brace for improving short term outcome following ACL reconstruction is not justified and adds to the cost of treatment. A short cylindrical back slab for 2-3days can serve the same purpose of controlling pain and soft tissue protection.
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46

Polonia, A., L. Torelli, L. Gasperini, and P. Mussoni. "Active faults and historical earthquakes in the Messina Straits area (Ionian Sea)." Natural Hazards and Earth System Sciences 12, no. 7 (July 24, 2012): 2311–28. http://dx.doi.org/10.5194/nhess-12-2311-2012.

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Abstract. The Calabrian Arc (CA) subduction complex is located at the toe of the Eurasian Plate in the Ionian Sea, where sediments resting on the lower plate have been scraped off and piled up in the accretionary wedge due to the African/Eurasian plate convergence and back arc extension. The CA has been struck repeatedly by destructive historical earthquakes, but knowledge of active faults and source parameters is relatively poor, particularly for seismogenic structures extending offshore. We analysed the fine structure of major tectonic features likely to have been sources of past earthquakes: (i) the NNW–SSE trending Malta STEP (Slab Transfer Edge Propagator) fault system, representing a lateral tear of the subduction system; (ii) the out-of-sequence thrusts (splay faults) at the rear of the salt-bearing Messinian accretionary wedge; and (iii) the Messina Straits fault system, part of the wide deformation zone separating the western and eastern lobes of the accretionary wedge. Our findings have implications for seismic hazard in southern Italy, as we compile an inventory of first order active faults that may have produced past seismic events such as the 1908, 1693 and 1169 earthquakes. These faults are likely to be source regions for future large magnitude events as they are long, deep and bound sectors of the margin characterized by different deformation and coupling rates on the plate interface.
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de Sigoyer, Julia, Olivier Vanderhaeghe, Stéphanie Duchêne, and Audrey Billerot. "Generation and emplacement of Triassic granitoids within the Songpan Ganze accretionary-orogenic wedge in a context of slab retreat accommodated by tear faulting, Eastern Tibetan plateau, China." Journal of Asian Earth Sciences 88 (July 2014): 192–216. http://dx.doi.org/10.1016/j.jseaes.2014.01.010.

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48

Dougherty, Mark C., J. Erik Kulenkamp, Haroutioun Boyajian, Jason L. Koh, Michael J. Lee, and Lewis L. Shi. "National trends in the diagnosis and repair of SLAP lesions in the United States." Journal of Orthopaedic Surgery 28, no. 1 (December 26, 2019): 230949901988855. http://dx.doi.org/10.1177/2309499019888552.

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Background: Since superior labrum anterior-to-posterior (SLAP) tear was introduced as an International Classification of Diseases-Ninth Revision, Clinical Modification diagnosis in 1994, awareness, diagnosis, and surgical treatment of this disorder has increased. Here, we aim to clarify trends in the frequency of SLAP tear diagnosis and arthroscopic SLAP repair surgery in the United States. Methods: Using private insurance claims from 2003 to 2013 in MarketScan (approximately 55 million Americans), we identified patients with SLAP tear diagnosis or arthroscopic SLAP repair surgery. Population-based rates of SLAP diagnosis and related shoulder procedures were calculated. Results: A total of 329,643 patients in the MarketScan database received a SLAP tear diagnosis. In all, 62.8% underwent some form of shoulder surgery after diagnosis. SLAP diagnosis increased from 28.0 per 100,000 in 2003 to 142.4 per 100,000 in 2013 ( p < 0.0001); the rate of shoulder surgery in these patients increased from 20.1 per 100,000 in 2003 to 74.1 per 100,000 in 2013 ( p < 0.0001). However, the percentage of patients with SLAP tears who got shoulder surgery decreased ( p < 0.0001). In 2003, almost no patient got biceps tenodesis for SLAP tears; by 2013, 18.1% of surgeries for SLAP tear were biceps tenodesis. Isolated arthroscopic SLAP repairs peaked in 2009 at 28.4 per 100,000 and stabilized thereafter. Conclusion: We confirmed prior reports that SLAP diagnosis increased from 2003 to 2013, although the percentage of these patients who underwent surgery decreased over this period. Arthroscopic SLAP repair doubled but then plateaued after 2009. Biceps tenodesis now accounts for a substantial portion of surgeries for SLAP tear. This may reflect an improved understanding of superior labrum anatomy and biomechanics.
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49

Siciliano, Fulvio. "Mathematical Modelling of Hot Rolling: A Practical Tool to Improve Rolling Schedules and Steel Properties." Materials Science Forum 762 (July 2013): 210–17. http://dx.doi.org/10.4028/www.scientific.net/msf.762.210.

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Most of the commercial metallic materials undergo at least one hot deformation stage during fabrication. Hot deformation processing leads to the production of plates, strips, rods, pipes and other shapes at lower overall cost when compared to the cold deformation/annealing route. Comprehensive study of the metallurgical phenomena during hot deformation has enormous potential application in the control of industrial rolling processes. Understanding of the microstructural and mean flow stress evolution lead to sound steel developments and innovative rolling schedules. The models predict parameters such as grain size, fractional softening (static and dynamic) and strain induced precipitation which are useful to improve rolling schedules. Effects such as incomplete softening and strain accumulation can be easily detected as well as their consequences on the final grain size and mechanical properties. In this regard, special attention must be given to steels, the most important metallic material in terms of history, present and future. In this paper, three hot rolling routes will be analyzed in order to produce high strength linepipe steels. Examples were selected on how the use of modelling during development stage can help to meet mechanical properties, mainly toughness and drop weight tear test. Firstly, it is presented a brief overview on mathematical models applied to hot rolling. Thin slab casting/direct rolling, hot strip mill and plate mill are exemplified in the present work. The development of new steel grades can greatly accelerated with the aid of modelling, which is an useful, low-cost technique.
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Litvan, David, Pavlina Matečková, and Martina Smirakova. "Analysis of Model Foundation Slab Focused on Strain Gauge Measurement." Key Engineering Materials 738 (June 2017): 175–84. http://dx.doi.org/10.4028/www.scientific.net/kem.738.175.

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Interaction analysis between foundation structure and subsoil and credential assessment of stress in the subsoil and internal forces in foundation structure are discussed in research conferences and scientific journals in the long term. Since 2012 research team at Faculty of civil engineering VSB - TU Ostrava has tested a few slabs with dimensions 2 x 2 m with thickness from 0.12 to 0.2 m. Complex testing comprises measurement of slab deformations, stress in the subsoil and measurement of stress in foundation slab using strain gauges. Slabs were made of plain concrete, reinforced concrete, pre-stressed concrete and fibre concrete. In the paper there are particular test results of stress measured in the foundation structure. Measured values are compared with calculated values. Strain gauge measurement efficiency and optimisation is discussed.
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