Thermochemical Mantle Convection with Drifting Deformable Continents: Main Features of Supercontinent Cycle

Бобров, А. М.; Baranov, A. A.

doi:10.1007/s00024-019-02164-w

Cited by 8 publications

(3 citation statements)

References 62 publications

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“…A weakness of such models is generally that below the continents the temperature is elevated, which is well‐known to be untrue. Likewise, models have come forth with continents of different viscosity or even with nonlinear rheology and some of these have also achieved a complete cycle (Bobrov & Baranov, 2019; Bobrov et al., 2022; Kameyama & Harada, 2017; Lenardic et al., 2000; Rolf et al., 2012; Yoshida, 2013; Yoshida & Santosh, 2011). The recent models examine the stress field during continent‐to‐continent collisions and breakups, including sea level changes of continent surfaces.…”

Section: Discussionmentioning

confidence: 99%

“…Slightly more than a decade later, the first numerical model of a floating insulator with convection cells reproduced drift (Gurnis, 1988). Subsequent models for continent/convection interaction have become more complex (Bobrov & Baranov, 2018, 2019; Coltice et al., 2007; Grigné et al., 2007, 2007a, 2007b; Guillou & Jaupart, 1995; Lowman & Jarvis, 1993, 1995, 1996, 1999; Lowman & Gable, 1999; Lenardic et al., 2011; Rykov & Trubitsyn, 1996; Trubitsyn & Rykov, 1995; Yoshida et al., 1999; Zhong & Gurnis, 1993). Studies include flow in a sphere ( Phillips & Bunge, 2007; Trubitsyn et al., 2008; Yoshida, 2010a,b, 2013, 2019 ; Zhang et al., 2009, 2018), effects on polar wander (Li & Zhong, 2009; O’Neill et al., 2009) formation of crust (Bobrov & Trubitsyn, 2008; Rozel et al., 2017), and convection's effects on Earth's heat budget when cycles are included (Coltice et al., 2007; Heron & Lowman, 2011, 2014; Lenardic et al., 2000, 2011; Phillips & Coltice, 2010; Rolf et al., 2012; Trubitsyn et al., 2008; Yoshida, 2013).…”

Section: Introductionmentioning

confidence: 99%

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Convection Cells With Accumulating Crust: Models of Continent and Mantle Evolution

Whitehead

2023

JGR Solid Earth

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Numerical calculations of two component cellular convection with a lighter component diffusing down from the top are a simple model of the convection of rocky planets with a crust. The crust either is mixed down, floats along the top as blobs (continents separated by ocean basins), or forms layers. The calculations are for very viscous fluid with density variations from temperature and the lighter component representing the crust. If variations are approximately the same size, the lighter component collects along the top into H‐shaped blobs/clusters that have a flat midsection with two lobes on each end. Elevations are calculated for a free upper surface and the shape resembles continent and ocean floor topography with level interiors and thickening (mountains) at the edges produced by sinking at the margins. Between each pair of clusters, thermal and concentration boundary layers resemble ocean basins with spreading centers. Convection is unsteady but introducing internal decay of the lighter concentration produces steady flow. Internal heating produces similar results along with periodic drifting and merging of blobs like some geological cycles. The fact that these features arise without phase changes or viscosity variation implies that blobs of continent‐like crust might be widely found on rocky planets.

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Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Convection Cells With Accumulating Crust: Models of Continent and Mantle Evolution

Whitehead

2023

JGR Solid Earth

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Design and Mechanism of a Self‐Powered and Disintegration–Reorganization–Regeneration Power Supply with Cold Resistance

et al. 2021

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in the future, and the power supply plays a fundamental role in deformable disintegration-reorganization robots. [1][2][3][4][5][6] From the perspective of technique, there are two basic approaches to solve the power supply problem of the disintegration-reorganization-deformation robot. One is to install an independent energy-storage system on each module of the disintegration-reorganization-deformation robot, which is the easiest approach to realize by directly applying high-capacity batteries or supercapacitors at present. [7][8][9] However, the defect of this method is that a disintegration-reorganization-deformation module with the failure of energy storage will lead to the failure of this module in operation, which may seriously affect the original system that needs it to play a role. The other is to make each module possess a self-powered power supply with the ability of disintegration, reorganization and deformation, which can solve the trouble of energy storage. [10][11][12] Therefore, the design and development of self-powered and disintegration-reorganization-regeneration power supply applying for the disintegration-reorganization-deformation robot can not only accelerate the construction and development of science and technology, but also promote the great revolutionary breakthroughs in the fields of transportation, construction, intelligent industry, etc.Up to now, power supplies designed based on the electrochemical reaction principle have had unavoidable defects, in that a complete redox reaction must be formed inside the power supply to operate normally, which makes it unable to be reconstructed and regenerated. Hence, the design and interpretation of this self-powered and disintegration-reorganization-regeneration power supply are generally considered to be almost insurmountable obstacles to haunt both experimenters and theorists. Herein, a self-powered and disintegration-reorganization-regeneration power supply with relatively stable discharge for 8.3 h is realized by the principle of ion-selective diffusion, which regenerates by radical polymerization. Additionally, the mechanism is investigated systematically by molecular dynamics simulation, and this power supply with a variety of self-powered and disintegration-reorganizationregeneration units can discharge continuously at freezing temperatures and variable temperature (0-25 °C). As a hypothetical model, a self-powered and deformable arch bridge with disintegration and reorganization is fabricated. In the future, this power supply is expected to be applied in prosthetic limbs, bionic skins, implantable power supplies, mobile phones, portable computers, wearable devices, etc. Moreover, with the improvement of the stability and discharge life, it could promote major revolutionary breakthroughs in the fields of intelligent industrial automation, smart buildings, intelligent transportation systems, intelligent power systems, etc.

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Evolution of stress fields during the supercontinent cycle

Бобров

Baranov

Tenzer

2022

Geodesy and Geodynamics

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Thermochemical Mantle Convection with Drifting Deformable Continents: Main Features of Supercontinent Cycle

Cited by 8 publications

References 62 publications

Convection Cells With Accumulating Crust: Models of Continent and Mantle Evolution

Convection Cells With Accumulating Crust: Models of Continent and Mantle Evolution

Design and Mechanism of a Self‐Powered and Disintegration–Reorganization–Regeneration Power Supply with Cold Resistance

Evolution of stress fields during the supercontinent cycle

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