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Добірка наукової літератури з теми "Lithospheric stress"

Автор: Grafiati

Опубліковано: 6 вересня 2023

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Статті в журналах з теми "Lithospheric stress"

Gedamu, Andenet A., Mehdi Eshagh, and Tulu B. Bedada. "Lithospheric Stress Due to Mantle Convection and Mantle Plume over East Africa from GOCE and Seismic Data." Remote Sensing 15, no. 2 (January 12, 2023): 462. http://dx.doi.org/10.3390/rs15020462.

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The Afar and Ethiopian plateaus are in a dynamic uplift due to the mantle plume, therefore, considering the plume effect is necessary for any geophysical investigation including the estimation of lithospheric stress in this area. The Earth gravity models of the Gravity Field and Steady-State Ocean Circulation Explorer (GOCE) and lithospheric structure models can be applied to estimate the stress tensor inside the Ethiopian lithosphere. To do so, the boundary-value problem of elasticity is solved to derive a general solution for the displacement field in a thin elastic spherical shell representing the lithosphere. After that, general solutions for the elements of the strain tensor are derived from the displacement field, and finally the stress tensor from the strain tensor. The horizontal shear stresses due to mantle convection and the vertical stress due to the mantle plume are taken as the lower boundary value at the base of the lithosphere, and no stress at the upper boundary value of the lithospheric shell. The stress tensor and maximum stress directions are computed at the Moho boundary in three scenarios: considering horizontal shear stresses due to mantle convection, vertical stresses due to mantle plume, and their combination. The estimated maximum horizontal shear stresses’ locations are consistent with tectonics and seismic activities in the study area. In addition, the maximum shear stress directions are highly correlated with the World Stress Map 2016, especially when the effect of the mantle plume is solely considered, indicating the stress in the study area mainly comes from the plume.

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Bercovici, David, and Elvira Mulyukova. "Evolution and demise of passive margins through grain mixing and damage." Proceedings of the National Academy of Sciences 118, no. 4 (January 19, 2021): e2011247118. http://dx.doi.org/10.1073/pnas.2011247118.

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How subduction—the sinking of cold lithospheric plates into the mantle—is initiated is one of the key mysteries in understanding why Earth has plate tectonics. One of the favored locations for subduction triggering is at passive margins, where sea floor abuts continental margins. Such passive margin collapse is problematic because the strength of the old, cold ocean lithosphere should prohibit it from bending under its own weight and sinking into the mantle. Some means of mechanical weakening of the passive margin are therefore necessary. Spontaneous and accumulated grain damage can allow for considerable lithospheric weakening and facilitate passive margin collapse. Grain damage is enhanced where mixing between mineral phases in lithospheric rocks occurs. Such mixing is driven both by compositional gradients associated with petrological heterogeneity and by the state of stress in the lithosphere. With lateral compressive stress imposed by ridge push in an opening ocean basin, bands of mixing and weakening can develop, become vertically oriented, and occupy a large portion of lithosphere after about 100 million y. These bands lead to anisotropic viscosity in the lithosphere that is strong to lateral forcing but weak to bending and sinking, thereby greatly facilitating passive margin collapse.

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Osei Tutu, Anthony, Bernhard Steinberger, Stephan V. Sobolev, Irina Rogozhina, and Anton A. Popov. "Effects of upper mantle heterogeneities on the lithospheric stress field and dynamic topography." Solid Earth 9, no. 3 (May 16, 2018): 649–68. http://dx.doi.org/10.5194/se-9-649-2018.

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Abstract. The orientation and tectonic regime of the observed crustal/lithospheric stress field contribute to our knowledge of different deformation processes occurring within the Earth's crust and lithosphere. In this study, we analyze the influence of the thermal and density structure of the upper mantle on the lithospheric stress field and topography. We use a 3-D lithosphere–asthenosphere numerical model with power-law rheology, coupled to a spectral mantle flow code at 300 km depth. Our results are validated against the World Stress Map 2016 (WSM2016) and the observation-based residual topography. We derive the upper mantle thermal structure from either a heat flow model combined with a seafloor age model (TM1) or a global S-wave velocity model (TM2). We show that lateral density heterogeneities in the upper 300 km have a limited influence on the modeled horizontal stress field as opposed to the resulting dynamic topography that appears more sensitive to such heterogeneities. The modeled stress field directions, using only the mantle heterogeneities below 300 km, are not perturbed much when the effects of lithosphere and crust above 300 km are added. In contrast, modeled stress magnitudes and dynamic topography are to a greater extent controlled by the upper mantle density structure. After correction for the chemical depletion of continents, the TM2 model leads to a much better fit with the observed residual topography giving a good correlation of 0.51 in continents, but this correction leads to no significant improvement of the fit between the WSM2016 and the resulting lithosphere stresses. In continental regions with abundant heat flow data, TM1 results in relatively small angular misfits. For example, in western Europe the misfit between the modeled and observation-based stress is 18.3°. Our findings emphasize that the relative contributions coming from shallow and deep mantle dynamic forces are quite different for the lithospheric stress field and dynamic topography.

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McNutt, Marcia. "Lithospheric stress and deformation." Reviews of Geophysics 25, no. 6 (1987): 1245. http://dx.doi.org/10.1029/rg025i006p01245.

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Eshagh, Mehdi, and Robert Tenzer. "Lithospheric Stress Tensor from Gravity and Lithospheric Structure Models." Pure and Applied Geophysics 174, no. 7 (April 22, 2017): 2677–88. http://dx.doi.org/10.1007/s00024-017-1538-6.

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He, Chuansong, and M. Santosh. "Formation of the North–South Seismic Zone and Emeishan Large Igneous Province in Central China: Insights from P-Wave Teleseismic Tomography." Bulletin of the Seismological Society of America 110, no. 6 (June 23, 2020): 3064–76. http://dx.doi.org/10.1785/0120200067.

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ABSTRACT The geodynamic features of the north–south seismic zone (NSSZ) and the formation of the Emeishan large igneous province (ELIP) in China remain controversial. In this study, we conducted detailed P-wave teleseismic tomography studies in the NSSZ and adjacent regions. The results revealed large high-velocity anomalies beneath the Songpan–Ganzi Block and the South China Block, possibly representing large-scale lithospheric delamination. We further identified low-velocity structures at 50–200 km depths in the western and southern parts of the NSSZ, suggesting an upwelling asthenosphere induced by delamination and the absence of a rigid lithosphere. Two high-velocity structures beneath the Sichuan basin and the Alashan block were also revealed, which may represent the lithospheric roots of these structures. These rigid lithospheric roots may have obstructed the eastward extrusion of the Tibetan plateau and led to stress accumulation and release (triggering earthquakes) in the Longmenshan Orogenic Belt and the northern part of the NSSZ. Because of this obstruction, the eastward extrusion was redirected southeastward to Yunnan in the southern part of the NSSZ, which led to stress accumulation and release causing earthquakes along the Honghe and Xiaojiang faults. The results from this study reveal a high-velocity structure with a subducted slab-like appearance that may represent vestiges of the Paleo-Tethys oceanic lithosphere, which subducted beneath the ELIP and initiating large-scale mantle return flow or mantle upwelling, contributing to the formation of the ELIP.

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Singh, Srishti, and Radheshyam Yadav. "Numerical modeling of stresses and deformation in the Zagros–Iranian Plateau region." Solid Earth 14, no. 8 (August 30, 2023): 937–59. http://dx.doi.org/10.5194/se-14-937-2023.

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Abstract. The Zagros orogenic system resulted due to collision of the Arabian plate with the Eurasian plate. The region is characterized by ocean–continent subduction and continent–continent collision, and the convergence velocity shows variations from east to west. Therefore, this region shows the complex tectonic stress and a wide range of diffuse or localized deformation between both plates. The in situ stress and GPS data are very limited and sparsely distributed in this region; therefore, we performed a numerical simulation of the stresses causing deformation in the Zagros–Iran region. The deviatoric stresses resulting from the variations in lithospheric density and thickness and those from shear tractions at the base of the lithosphere due to mantle convection were computed using thin-sheet approximation. Stresses associated with both sources can explain various surface observations of strain rates, SHmax, and plate velocities, thus suggesting a good coupling between lithosphere and mantle in most parts of Zagros and Iran. As the magnitude of stresses due to shear tractions from density-driven mantle convection is higher than those from lithospheric density and topography variations in the Zagros–Iranian Plateau region, mantle convection appears to be the dominant driver of deformation in this area. However, the deformation in the east of Iran is caused primarily by lithospheric stresses. The plate velocity of the Arabian plate is found to vary along the Zagros belt from the north–northeast in the southeast of Zagros to the northwest in northwestern Zagros, similarly to observed GPS velocity vectors. The output of this study can be used in seismic hazards estimations.

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Zoback, Mary Lou, and Kevin Burke. "Lithospheric stress patterns: A global view." Eos, Transactions American Geophysical Union 74, no. 52 (1993): 609. http://dx.doi.org/10.1029/93eo00340.

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Azeez, K. K. Abdul, Kapil Mohan, K. Veeraswamy, B. K. Rastogi, Arvind K. Gupta, and T. Harinarayana. "Lithospheric resistivity structure of the 2001 Bhuj earthquake aftershock zone." Geophysical Journal International 224, no. 3 (November 24, 2020): 1980–2000. http://dx.doi.org/10.1093/gji/ggaa556.

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SUMMARY The Bhuj area, in the Kutch region of western India, is a unique intraplate seismic zone in the world where aftershock activity associated with a large magnitude earthquake (7.7 Mw Bhuj earthquake on 26 January 2001) has persisted over a decade and up till today. We studied the lithospheric resistivity structure of the Bhuj earthquake aftershock zone to gain more insight into the structure and processes influencing the generation of intraplate seismicity in broad and, in particular, to detect the deep origin and upward migration channels of fluids linked to the crustal seismicity in the area. A lithospheric resistivity model deduced from 2-D and 3-D inversions of long-period magnetotelluric (MT) data shows low resistive lithospheric mantle, which can be best explained by a combination of a small amount of interconnected melts and aqueous fluid in the upper mantle. The MT model also shows a subvertical modestly conductive channel, spatially coinciding with the Kutch Mainland Fault, which we interpret to transport fluids from the deep lithosphere to shallow crust. We infer that pore pressure buildup aids to achieve the critical stress conditions for rock failure in the weak zones, which are pre-stressed by the compressive stress regime generated by ongoing India–Eurasia collision. The fluidized zone in the upper mantle beneath the area perhaps provides continuous fluid supply, which is required to maintain the critical stress conditions within the seismogenic crust for continued seismicity.

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Platt, J. P., and W. M. Behr. "Lithospheric shear zones as constant stress experiments." Geology 39, no. 2 (February 2011): 127–30. http://dx.doi.org/10.1130/g31561.1.

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Дисертації з теми "Lithospheric stress"

Moisio, K. (Kari). "Numerical lithospheric modelling: rheology, stress and deformation in the central Fennoscandian Shield." Doctoral thesis, University of Oulu, 2005. http://urn.fi/urn:isbn:9514279514.

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Abstract This thesis deals with the analysis of the rheological structure and tectonic modelling of the Fennoscandian Shield. First, a short introduction to the geology and geophysics of the Fennoscandian Shield is presented followed by a description of rheological concepts. Second, the applied modelling procedures, together with the sources of error are explained. Last a brief summary of each original paper including conclusions is given. Understanding rheological conditions through the entire lithosphere and even deeper is the key for understanding the deformation of the earth's interior. Thus, investigating the rheological structure and possible consequences resulting from tectonic loading are required to some extent when interpreting geophysical data into tectonic models. In this thesis rheological structure is obtained by calculating rheological strength in different locations of the central Fennoscandian Shield. These locations are mainly situated along different deep seismic sounding (DSS) profiles as they provide necessary geophysical information required for model construction. Modelling begins by solving the thermal structure in the lithosphere, as rheological behaviour, mainly ductile flow is strongly controlled by temperature. Results from these calculations show that the rheological structure of the lithosphere depends on the thermal conditions resulting in significant areal variations. Generally, the central Fennoscandian Shield can be considered to be rheologically rather strong. Rheologically weak layers are however usually found in the lower crust. Correlation of the rheological structure with earthquake focal depth data shows that brittle fracture is the relevant mechanism in the earthquake generation and that non-occurrence of deep earthquakes implies low stress or high strength conditions deeper in the crust. Calculated rheological structure is furthermore used as a material parameter in the structural models which are solved next. These results suggest that it is highly unlikely that any considerable ductile deformation in the crust of the central Fennoscandian Shield exists and it seems that the present-day thermal and mechanical conditions in the investigated area do not favour such processes in significant amounts.

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Heinicke, Christiane. "Lithospheric-Scale Stresses and Shear Localization Induced by Density-Driven Instabilities." Thesis, Uppsala universitet, Geofysik, 2010. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-183725.

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The initiation of subduction requires the formation of lithospheric plates which mostly deform at their edges. Shear heating is a possible candidate for producing such localized deformation. In this thesis we employ a 2D model of the mantle with a visco-elasto-plastic rheology and enabled shear heating. We are able to create a shear heating instability both in a constant strain rate and a constant stress boundary condition setup. For the rst case, localized deformation in our specic setup is found for strain rates of 10-15 1/s and mantle temperatures of 1300°C. For constant stress boundaries, the conditions for a setup to localize are more restrictive. Mantle motion is induced by large cold and hot temperature perturbations. Lithospheric stresses scale with the size of these perturbations; maximum stresses are on the order of the yield stress (1 GPa). Adding topography or large inhomogeneities does not result in lithospheric-scale fracture in our model. However, localized deformation does occur for a restricted parameter choice presented in this thesis. The perturbation size has little effect on the occurrence of localization, but large perturbations shorten its onset time.

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Hyett, Andrew James. "Numerical and experimental modelling of the potential state of stress in a naturally fractured rock mass." Thesis, Imperial College London, 1990. http://hdl.handle.net/10044/1/46356.

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Osei, Tutu Anthony [Verfasser], Michael [Akademischer Betreuer] Weber, Bernhard [Akademischer Betreuer] Steinberger, and Irina [Akademischer Betreuer] Rogozhina. "Linking global mantle dynamics with lithosphere dynamics using the geoid, plate velocities and lithosphere stress state as constraints : lithosphere and mantle dynamics coupling / Anthony Osei Tutu ; Michael H. Weber, Bernhard Steinberger, Irina Rogozhina." Potsdam : Universität Potsdam, 2018. http://d-nb.info/1218403330/34.

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Osei, Tutu Anthony [Verfasser], Michael H. [Akademischer Betreuer] Weber, Bernhard [Akademischer Betreuer] Steinberger, and Irina [Akademischer Betreuer] Rogozhina. "Linking global mantle dynamics with lithosphere dynamics using the geoid, plate velocities and lithosphere stress state as constraints : lithosphere and mantle dynamics coupling / Anthony Osei Tutu ; Michael H. Weber, Bernhard Steinberger, Irina Rogozhina." Potsdam : Universität Potsdam, 2018. http://d-nb.info/1218403330/34.

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Theodoridou, Sophia. "Determination of subducting lithosphere bending and stress distributions from the curvature of Wadati-Benioff zone seismicity." Thesis, University of Liverpool, 2008. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.494095.

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The discovery of double and triple seismic planes at subduction intermediate depths has attracted the interest of the scientific community but the exact cause for this earthquake layering remains elusive. In order to investigate the origins of the observed seismic planes the work described in this thesis examines the effects of slab bending and unbending at intermediate depths along with the input of thermal stresses, the basalt transition into eclogite and slab pull, on the stress distributions of a modelled slab.

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Fry, Anna. "Modelling stress accumulation and dissipation in subducting lithosphere and the origin of double and triple seismic zones." Thesis, University of Liverpool, 2010. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.539734.

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Gunawardana, Prasanna M. "Deep Earthquakes Spatial Distribution| Numerical Modeling of Stress and Stored Elastic Energy Distribution within the Subducting Lithosphere." Thesis, University of Louisiana at Lafayette, 2016. http://pqdtopen.proquest.com/#viewpdf?dispub=10163344.

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The spatial distribution of deep earthquakes remains elusive, as the earthquakes below 30 km depth cannot be explained using the brittle frictional processes due to the fluid behavior of rocks under high pressure and temperature conditions. Several models that have been developed to identify the source distribution fall largely into categories like negative buoyancy and viscous friction to the flow, anti-crack faulting due to metastable olivine, volume reductions from phase transformations etc. Still none of them were able to satisfactorily explain the spatial distribution of deep earthquakes. We propose a new method using the visco-elastic nature of the earth material to model the deformation, stress, and elastic energy of the subducting lithosphere using “Marker in cell method” in combination with a conservative finite difference scheme. The software is written in Python and NumPy. We have tested this code for the known results of a Rayleigh–Taylor instability of solid-fluid interaction, and for a general subduction benchmark (Schmeling et al., 2008). We show a large set of numerical models in which we investigate the role of volatiles in the transition zone by varying the viscosity of the lithosphere and the presence of a high viscosity zone below the upper-lower mantle transition zone. Finally, we compare the rate of inner energy dissipation and the stored elastic energy in the subducting lithosphere with deep earthquake spatial distribution and discuss which constrains geodynamic models offer to deep earthquake location.

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Druiventak, Anthony [Verfasser], Claudia A. [Gutachter] Trepmann, and Jörg [Gutachter] Renner. "Experimental high-stress deformation and annealing of peridotite : simulating coseismic deformation and postseismic creep in the upper mantle of the oceanic lithosphere / Anthony Druiventak ; Gutachter: Claudia A. Trepmann, Jörg Renner ; Fakultät für Geowissenschaften." Bochum : Ruhr-Universität Bochum, 2013. http://d-nb.info/1209358247/34.

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Maury, Julie. "Analyse du potentiel sismique d'un secteur lithosphérique au nord ouest des Alpes." Phd thesis, Université de Strasbourg, 2013. http://tel.archives-ouvertes.fr/tel-00873526.

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Le nord-ouest des Alpes est un domaine intraplaque présentant de très faibles déformations. C'est pourquoi il paraît délicat de déduire la probabilité d'occurrence d'un séisme de taille lithosphérique (magnitude supérieure à 7) à partir des observations de microsismicité. De telles observations sont en effet des processus superficiels et présentent peu ou pas de lien avec des processus profonds de plus grande ampleur. L'objectif est de déterminer le potentiel sismique d'un secteur au nord-ouest des Alpes en étudiant le champ de contrainte résultant d'un chargement gravitaire. Seuls les objets de taille lithosphérique, i.e. de l'ordre de la centaine de kilomètres sont pris en compte. Un modèle de contraintes à l'échelle 360 km par 400 km par 230 km d'épaisseur, centré sur la subduction fossile des Alpes de l'ouest et s'étendant jusqu'au nord de Strasbourg, est établi. L'étude des structures du nord-ouest alpin montre l'importance de l'orogène alpin qui se retrouve, enparticulier, dans les variations de profondeur des interfaces de la lithosphère. Une étude du champ de contrainte dans le socle a permis d'identifier une rotation des contraintes principales horizontales avec l'axe des Alpes. Bien que la valeur absolue des contraintes principales n'ait pas pu être déterminée, un rapport de valeur relative est calculé. Le résultat de la modélisation montre l'importance de la rhéologie dans le cas d'un chargement gravitaire. Si une rhéologie élastique est prise en compte, les directions de contrainte calculées sont totalement différentes des observations. Par contre, l'utilisation d'une rhéologie élasto-plastique combinée à l'utilisation d'une géométrie réaliste des interfaces lithosphériques permet d'obtenir des directions de contraintes cohérentes avec les données.

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Книги з теми "Lithospheric stress"

Stress regimes in the lithosphere. Princeton, N.J: Princeton University Press, 1993.

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1938-, Smith Robert Baer, Renggli Casper, and United States. National Aeronautics and Space Administration., eds. Kinematics of basin-range intraplate extension. [Washington, DC: National Aeronautics and Space Administration, 1985.

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1938-, Smith Robert Baer, Renggli Casper, and United States. National Aeronautics and Space Administration, eds. Kinematics of basin-range intraplate extension. [Washington, DC: National Aeronautics and Space Administration, 1985.

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Caputo, Michele. Altimetry data and the elastic stress tensor of subduction zones. [Washington, DC: National Aeronautics and Space Administration, 1985.

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Caputo, Michele. Altimetry data and the elastic stress tensor of subduction zones. Greenbelt, Maryland: National Aeronautics and Space Administration, Goddard Space Flight Center, 1987.

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Caputo, Michele. Altimetry data and the elastic stress tensor of subduction zones. [Washington, DC: National Aeronautics and Space Administration, 1985.

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B, Whitmarsh R., ed. Tectonic stress in the lithosphere: Proceedings of a Royal Society Discussion Meeting held on 10 and 11 April 1991. London: Royal Society, 1991.

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United States. National Aeronautics and Space Administration., ed. Intraplate deformation, stress in the lithosphere and the driving mechanism for plate motions: Annual status report for the period March 1, 1987 - March 31, 1988. [Washington, DC: National Aeronautics and Space Administration, 1988.

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Stress Regimes in the Lithosphere. Princeton University Press, 1992.

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Частини книг з теми "Lithospheric stress"

Malyshkov, Sergey, Vasiliy Gordeev, Vitaliy Polivach, and Sergey Shtalin. "Stress-Strain State Monitoring of a Man-Induced Landslide Based on the Lithospheric Component Parameters of the Earth’s Pulsed Electromagnetic Field." In Springer Proceedings in Earth and Environmental Sciences, 367–77. Cham: Springer International Publishing, 2019. http://dx.doi.org/10.1007/978-3-030-31970-0_39.

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Raleigh, Barry, and Jack Evernden. "Case for Low Deviatoric Stress in the Lithosphere." In Mechanical Behavior of Crustal Rocks, 173–86. Washington, D. C.: American Geophysical Union, 2013. http://dx.doi.org/10.1029/gm024p0173.

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Kashubin, Sergey. "Seismic anisotropy of the Earth's crust of the Urals and its possible relation to oriented cracking and to stress state." In Continental Lithosphere: Deep Seismic Reflections, 97–99. Washington, D. C.: American Geophysical Union, 1991. http://dx.doi.org/10.1029/gd022p0097.

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Gvishiani, A. D., V. A. Gurvich, and A. G. Tumarkin. "Layered Block Model in Problems of Slow Deformations of the Lithosphere and of Earthquake Engineering." In Slow Deformation and Transmission of Stress in the Earth, 65–69. Washington, D. C.: American Geophysical Union, 2013. http://dx.doi.org/10.1029/gm049p0065.

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Bott, Martin H. P. "Upper Mantle Density Anomalies, Tectonic Stress in the Lithosphere, and Plate Boundary Forces." In Relating Geophysical Structures and Processes: The Jeffreys Volume, 27–38. Washington, D. C.: American Geophysical Union, 2013. http://dx.doi.org/10.1029/gm076p0027.

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Eshagh, Mehdi. "Gravity field and lithospheric stress." In Satellite Gravimetry and the Solid Earth, 375–412. Elsevier, 2021. http://dx.doi.org/10.1016/b978-0-12-816936-0.00008-6.

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Eshagh, Mehdi. "Satellite gravimetry and lithospheric stress." In Satellite Gravimetry and the Solid Earth, 413–49. Elsevier, 2021. http://dx.doi.org/10.1016/b978-0-12-816936-0.00009-8.

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Wang, Yang, and Suhua Cheng. "Lithospheric thermo-mechanical strength map of China." In Rock Stress and Earthquakes, 751–54. CRC Press, 2010. http://dx.doi.org/10.1201/9780415601658-129.

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Wang, Yang, and Suhua Cheng. "Lithospheric thermo-mechanical strength map of China." In Rock Stress and Earthquakes, 751–54. CRC Press, 2010. http://dx.doi.org/10.1201/b10555-129.

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Eshagh, Mehdi. "The Earth’s Gravity Field Role in Geodesy and Large-Scale Geophysics." In Geodetic Sciences - Theory, Applications and Recent Developments. IntechOpen, 2021. http://dx.doi.org/10.5772/intechopen.97459.

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The Earth gravity field is a signature of the Earth’s mass heterogeneities and structures and applied in Geodesy and Geophysics for different purposes. One of the main goals of Geodesy is to determine the physical shape of the Earth, geoid, as a reference for heights, but Geophysics aims to understand the Earth’s interior. In this chapter, the general principles of geoid determination using the well-known methods of Remove-Compute-Restore, Stokes-Helmert and least-squares modification of Stokes’ formula with additive corrections are shortly discussed. Later, some Geophysical applications like modelling the Mohorovičić discontinuity and density contrast between crust and uppermantle, elastic thickness, ocean depth, sediment and ice thicknesses, sub-lithospheric and lithospheric stress, Earthquakes and epicentres, post-glacial rebound, groundwater storage are discussed. The goal of this chapter is to briefly present the roll of gravity in these subjects.

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Тези доповідей конференцій з теми "Lithospheric stress"

Lisle, David A., and Lyle D. McGinnis. "Contemporary stress fields, ancient lithospheric blocks, and contemporary earthquakes." In 1985 SEG Technical Program Expanded Abstracts. SEG, 1985. http://dx.doi.org/10.1190/1.1892747.

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Vengrovich, D. B., and G. P. Sheremet. "Irregularity of lithospheric stress as a result of plates structure." In 18th International Conference on Geoinformatics - Theoretical and Applied Aspects. European Association of Geoscientists & Engineers, 2019. http://dx.doi.org/10.3997/2214-4609.201902152.

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Gao, Stephen S., and Kelly H. Liu. "RIFTING INITIATION THROUGH LATERAL VARIATIONS OF LITHOSPHERIC BASAL STRESS BENEATH PREEXISTING ZONES OF WEAKNESS." In GSA Annual Meeting in Denver, Colorado, USA - 2016. Geological Society of America, 2016. http://dx.doi.org/10.1130/abs/2016am-283263.

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Goteti, Rajesh, Yaser Alzayer, Hyoungsu Baek, and Yanhui Han. "Regional In-Situ Stress Prediction in Frontier Exploration and Development Areas: Insights from the First-Ever 3D Geomechanical Model of the Arabian Plate." In SPE Middle East Oil & Gas Show and Conference. SPE, 2021. http://dx.doi.org/10.2118/204866-ms.

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Abstract In this paper, we present results from the first-ever 3D geomechanical model that supports pre-drill prediction of regional in-situ stresses throughout the Arabian Plate. The results can be used in various applications in the petroleum industry such as fault slip-tendency analysis, hydraulic fracture stimulation design, wellbore stability analysis and underground carbon storage. The Arabian tectonic plate originated by rifting of NE Africa to form the Red Sea and the Gulfs of Aden and Aqaba. The continental rifting was followed by the formation of collisional zones with eastern Turkey, Eurasia and the Indo-Australian Plate, which resulted in the formation of the Eastern Anatolian fault system, the fold-thrust belts of Zagros and Makran, and the Owen fracture zone. This present-day plate tectonic framework, and the ongoing movement of the Arabian continental lithosphere, exert a first-order control on the of in-situ stresses within its sedimentary basins. Using data from published studies, we developed a 3D finite element of the Arabian lithospheric plate that takes into account interaction between the complex 3D plate geometry and present-day plate boundary velocities, on elastic stress accumulation in the Arabian crust. The model geometry captures the first-order topographic features of the Arabian plate such as the Arabian shield, the Zagros Mountains and sedimentary thickness variations throughout the tectonic plate. The model results provide useful insights into the variations in in-situ stresses in sediments and crystalline basement throughout Arabia. The interaction between forces from different plate boundaries results in a complex transitional stress state (thrust/strike-slip or normal/strike-slip) in the interior regions of the plate such that the regional tectonic stress regime at any point may not be reconciled directly with the anticipated Andersonian stress regimes at the closest plate boundary. In the sedimentary basin east of the Arabian shield, the azimuths of the maximum principal compressive stresses change from ENE in southeast to ~N-S in northern portions of the plate. The shape of the plate boundary, particularly along the collisional boundaries, plays a prominent in controlling both the magnitude and orientations of the principal stresses. In addition, the geometry of the Arabian shield in western KSA and variations in the sedimentary basin thickness, cause significant local stress perturbations over 10 – 100 km length scales in different regions of the plate. The model results can provide quantitative constraints on relative magnitudes of principal stresses and horizontal stress anisotropy, both of which are critical inputs for various subsurface applications such as mechanical earth model (MEM) and subsequently wellbore stability analysis (WSA). The calibrated model results can potentially reduce uncertainties in input stress parameters for MEM and WSA and offer improvements over traditional in-situ stress estimation techniques.

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Witcher, Taylor Anne. "TESTING MODELS OF LITHOSPHERIC RHEOLOGY IN NEW ZEALAND: POSTSEISMIC COULOMB STRESS CHANGES CAUSED BY THE 1848 MARLBOROUGH EARTHQUAKE." In GSA Annual Meeting in Denver, Colorado, USA - 2016. Geological Society of America, 2016. http://dx.doi.org/10.1130/abs/2016am-277932.

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Weil, Arlo Brandon, and Adolph Yonkee. "DEFORMATION PATTERNS ACROSS THE LARAMIDE AND SIERRA PAMPEANAS THICK-SKINNED FORELAND SYSTEMS; RELATIONS TO PLATE DYNAMICS, LITHOSPHERIC STRESS TRANSMISSION, AND CRUSTAL ARCHITECTURE." In GSA Annual Meeting in Indianapolis, Indiana, USA - 2018. Geological Society of America, 2018. http://dx.doi.org/10.1130/abs/2018am-316407.

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"Seismicity and the Geopotential Stress Field of the Continental Lithosphere." In The Second Eurasian RISK-2020 Conference and Symposium. AIJR Publisher, 2020. http://dx.doi.org/10.21467/abstracts.93.50.

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S. Bell, J. "The global sedimentary basin stress project of the international lithosphere programme." In 55th EAEG Meeting. European Association of Geoscientists & Engineers, 1993. http://dx.doi.org/10.3997/2214-4609.201411631.

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Kumar, A., and P. K. Khan. "Finite Element Stress Modelling for Subducting Lithosphere under Varying Angle of Inclination." In 78th EAGE Conference and Exhibition 2016. Netherlands: EAGE Publications BV, 2016. http://dx.doi.org/10.3997/2214-4609.201601287.

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Zhan, Yan, Patricia Gregg, Patricia Gregg, Guiting Hou, and Guiting Hou. "STRESS DEVELOPMENT IN HETEROGENETIC LITHOSPHERE: INSIGHTS INTO EARTHQUAKE PROCESSES IN THE NEW MADRID SEISMIC ZONE." In 50th Annual GSA North-Central Section Meeting. Geological Society of America, 2016. http://dx.doi.org/10.1130/abs/2016nc-275226.

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Звіти організацій з теми "Lithospheric stress"

McGarr, A., and G. L. Choy. Earthquakes having high apparent stress in oceanic intraplate lithosphere. Natural Resources Canada/ESS/Scientific and Technical Publishing Services, 2002. http://dx.doi.org/10.4095/222534.

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Bell, J. S. The Global Sedimentary Basin Stress Project of the International Lithosphere Program. Natural Resources Canada/ESS/Scientific and Technical Publishing Services, 1993. http://dx.doi.org/10.4095/192433.

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