Results 21 to 30 of about 924,857 (297)
The Influence of Bathymetry on Regional Marine Geoid Modeling in Northern Europe
Journal of Marine Science and Engineering, 2022 Although Northern Europe has been the target area in many regionwide geoid determination studies, the research has been land-focused, neglecting bathymetry information. With new projects, such as the Baltic Sea Chart Datum 2000, the attention is shifting
Sander Varbla
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environmental monitoring, cartography, image processing, sub-saharan Africa, R programming
Advances in Geodesy and Geoinformation, 2023 The article presents the reviewed and summarised research activities of the Polish research groups on gravimetry and gravity field modelling in the period of 2019–2022.
Jan Krynski +2 more
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Spontaneously generated tensor field gravity [PDF]
Nuclear Physics B, 2011 An arbitrary local theory of a symmetric two-tensor field $H_{ }$ in Minkowski spacetime is considered, in which the equations of motion are required to be compatible with a nonlinear length-fixing constraint $H_{ }^{2}=\pm M^{2}$ leading to spontaneous Lorentz invariance violation, SLIV ($M$ is the proposed scale for SLIV).
Chkareuli, J.L. +2 more
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Aerospace, 2023 Autonomous navigation and orbit determination are key problems of asteroid exploration missions. Inter-satellite range link is a type of measurement widely used in the orbit determination of Earth satellites, but not so widely used in missions around ...
Haohan Li, Xiyun Hou
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, 2022 For the construction and maintenance of large-scale infrastructure such as the Gotthard Base Tunnel or the CERN-FCC, it is vital to take into account the influence of the varying gravity field, because most geodetic measurements are referring to the local plumb lines and equipotential surfaces, deviating from purely geometrical positioning by e.g. GNSS.
Koch, Julia Azumi +3 more
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Results in Physics, 2013 AbstractUsing computer algebra to run Einstein’s equations “backward”, from field to source rather than from source to field, we design an artificial gravity field for a space station or spaceship. Everywhere inside astronauts experience normal Earth gravity, while outside they float freely.
Markley, Larry C., Lindner, John F.
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Testing the Master Constraint Programme for Loop Quantum Gravity V. Interacting Field Theories [PDF]
, 2004 This is the final fifth paper in our series of five in which we test the Master Constraint Programme for solving the Hamiltonian constraint in Loop Quantum Gravity.
Ashtekar A +43 more
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Dizhen xuebao, 2019 为深入理解研究区的构造运动规律，进一步探求地壳物质可能的运移模式，本文基于Crust1.0地壳结构模型和最新莫霍面深度模型对自由空气重力异常数据进行联合约束，采用三维重力反演技术得到了郯庐断裂带中段的三维密度结构。反演结果显示，研究区的背景场稳定，断裂构造发育部位表现为重力密度低值，特别是营潍断裂带正处于大范围的重力密度低值区并纵贯整个研究区，由此可推断重力密度低值区可指示断裂构造的存在。
Lina Zhai +6 more
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Horizon thermodynamics in fourth-order gravity
, 2017 In the framework of horizon thermodynamics, the field equations of Einstein gravity and some other second-order gravities can be rewritten as the thermodynamic identity: $dE=TdS-PdV$.
Ma, Meng-Sen
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Induced gravity I: real scalar field [PDF]
Journal of High Energy Physics, 2016 17 pages, 3 figures. v2, additional references; slight changes in wordng; no changes in results.
Einhorn, Martin, Jones, D.
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