Relevant bibliographies by topics / Gravity field grids

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  1. Journal articles
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  3. Conference papers

Academic literature on the topic 'Gravity field grids'

Author: Grafiati
Published: 2 June 2025
Last updated: 31 July 2025

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Journal articles on the topic "Gravity field grids"

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Cao, Shujin, Peng Chen, Guangyin Lu, Yihuai Deng, Dongxin Zhang, and Xinyue Chen. "Spherical Gravity Forwarding of Global Discrete Grid Cells by Isoparametric Transformation." Mathematics 12, no. 6 (2024): 885. http://dx.doi.org/10.3390/math12060885.

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For regional or even global geophysical problems, the curvature of the geophysical model cannot be approximated as a plane, and its curvature must be considered. Tesseroids can fit the curvature, but their shapes vary from almost rectangular at the equator to almost triangular at the poles, i.e., degradation phenomena. Unlike other spherical discrete grids (e.g., square, triangular, and rhombic grids) that can fit the curvature, the Discrete Global Grid System (DGGS) grid can not only fit the curvature but also effectively avoid degradation phenomena at the poles. In addition, since it has onl
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Isgаndаrov, E., A. Mammadov, and J. Maliyeva. "FILTRATION OF THE GRAVITATIONAL FIELD OF THE ABSHERON-BALKHAN AREA." POLISH JOURNAL OF SCIENCE, no. 86 (May 23, 2025): 22–28. https://doi.org/10.5281/zenodo.15494150.

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The article considers the issue of filtering the gravity field using derivative and gradient methods, which are highly sensitive in identifying weak local anomalies, gravity gradient zones, marginal parts of structures, deep faults and disturbances. As is known, these anomalies also display density heterogeneities of rocks, which can be associated with oil and gas fields and other minerals. Recently, various modifications and formulas for calculating gradients and derivatives of different orientations have been developed, which emphasize various features of anomaly-forming geological structure
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Shaw, James, and Hilary Weller. "Comparison of Terrain-Following and Cut-Cell Grids Using a Nonhydrostatic Model." Monthly Weather Review 144, no. 6 (2016): 2085–99. http://dx.doi.org/10.1175/mwr-d-15-0226.1.

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Abstract Terrain-following coordinates are widely used in operational models but the cut-cell method has been proposed as an alternative that can more accurately represent atmospheric dynamics over steep orography. Because the type of grid is usually chosen during model implementation, it becomes necessary to use different models to compare the accuracy of different grids. In contrast, here a C-grid finite-volume model enables a like-for-like comparison of terrain-following and cut-cell grids. A series of standard two-dimensional tests using idealized terrain are performed: tracer advection in
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Pilkington, M., and P. Keating. "Grid preparation for magnetic and gravity data using fractal fields." Nonlinear Processes in Geophysics 19, no. 2 (2012): 291–96. http://dx.doi.org/10.5194/npg-19-291-2012.

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Abstract. Most interpretive methods for potential field (magnetic and gravity) measurements require data in a gridded format. Many are also based on using fast Fourier transforms to improve their computational efficiency. As such, grids need to be full (no undefined values), rectangular and periodic. Since potential field surveys do not usually provide data sets in this form, grids must first be prepared to satisfy these three requirements before any interpretive method can be used. Here, we use a method for grid preparation based on a fractal model for predicting field values where necessary.
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Chen, Longwei, and Lanbo Liu. "Fast and accurate forward modelling of gravity field using prismatic grids." Geophysical Journal International 216, no. 2 (2018): 1062–71. http://dx.doi.org/10.1093/gji/ggy480.

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Zhu, Fengshun, Xin Liu, Zhen Li, Jiajia Yuan, Jinyun Guo, and Heping Sun. "High spatial resolution marine gravity trend determined from multisatellite altimeter data over Bay of Bengal." Geophysical Journal International 235, no. 3 (2023): 2257–67. http://dx.doi.org/10.1093/gji/ggad368.

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SUMMARY Mass redistribution in the Earth system induce variations of the Earth's gravity field. Now, the time-varying gravity models from the Gravity Recovery and Climate Experiment (GRACE) mission can only estimate the large-scale gravity changes, so the high-resolution marine gravity trend (MGT) model is urgently required to detect small-scale Earth's mass migration. The sea level change is a significant response to marine gravity field change. Here, we propose to estimate the high-resolution MGT using the sea level trend (SLT). Firstly, the SLT model caused by marine mass change (MMC) on 5′
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Xia, Jianghai, Donald R. Sprowl, and Dana Adkins‐Heljeson. "Correction of topographic distortions in potential‐field data: A fast and accurate approach." GEOPHYSICS 58, no. 4 (1993): 515–23. http://dx.doi.org/10.1190/1.1443434.

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The equivalent source concept is used in the wavenumber domain to correct distortions in potential‐field data caused by topographic relief. The equivalent source distribution on a horizontal surface is determined iteratively through forward calculation of the anomaly on the topographic surface. Convergence of the solution is stable and rapid. The accuracy of the Fourier‐based approach is demonstrated by two synthetic examples. For the gravity example, the rms error between the corrected anomaly and the desired anomaly is 0.01 mGal, which is less than 0.5 percent of the maximum synthetic anomal
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Ince, E. Sinem, Franz Barthelmes, Sven Reißland, et al. "ICGEM – 15 years of successful collection and distribution of global gravitational models, associated services, and future plans." Earth System Science Data 11, no. 2 (2019): 647–74. http://dx.doi.org/10.5194/essd-11-647-2019.

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Abstract. The International Centre for Global Earth Models (ICGEM, http://icgem.gfz-potsdam.de/, last access: 6 May 2019) hosted at the GFZ German Research Centre for Geosciences (GFZ) is one of the five services coordinated by the International Gravity Field Service (IGFS) of the International Association of Geodesy (IAG). The goal of the ICGEM service is to provide the scientific community with a state-of-the-art archive of static and temporal global gravity field models of the Earth, and develop and operate interactive calculation and visualization services of gravity field functionals on u
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Vermeer, M. "Regularization constraints in mass point grids and their relation to gravity field stochastics." Physics and Chemistry of the Earth 23, no. 1 (1998): 13–18. http://dx.doi.org/10.1016/s0079-1946(97)00235-8.

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Wang, Bingzhu, Edward S. Krebes, and Dhananjay Ravat. "High-precision potential-field and gradient-component transformations and derivative computations using cubic B-splines." GEOPHYSICS 73, no. 5 (2008): I35—I42. http://dx.doi.org/10.1190/1.2953291.

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Potential-field and gradient-component transformations and derivative computations are necessary for many techniques of data enhancement, direct interpretation, and inversion. We advance new unified formulas for fast interpolation, differentiation, and integration and propose flexible high-precision algorithms to perform 3D and 2D potential-field- and gradient component transformations and derivative computations in the space domain using cubic B-splines. The spline-based algorithms are applicable to uniform or nonuniform rectangular grids for the 3D case and to regular or irregular grids for
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Book chapters on the topic "Gravity field grids"

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Abd-Elmotaal, Hussein A., Norbert Kühtreiber, Kurt Seitz, and Bernhard Heck. "A Precise Geoid Model for Africa: AFRgeo2019." In International Association of Geodesy Symposia. Springer Berlin Heidelberg, 2020. http://dx.doi.org/10.1007/1345_2020_122.

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Abstract In the framework of the IAG African Geoid Project, an attempt towards a precise geoid model for Africa is presented in this investigation. The available gravity data set suffers from significantly large data gaps. These data gaps are filled using the EIGEN-6C4 model on a 15′× 15′ grid prior to the gravity reduction scheme. The window remove-restore technique (Abd-Elmotaal and Kühtreiber, Phys Chem Earth Pt A 24(1):53–59, 1999; J Geod 77(1–2):77–85, 2003) has been used to generate reduced anomalies having a minimum variance to minimize the interpolation errors, especially at the large
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Conference papers on the topic "Gravity field grids"

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Ma, Zhe, Danya Kong, Yin Wang, Nianxin Ren, and Gangjun Zhai. "Simulation of Working Posture of Deepwater Gravity Sampling Device Using OpenFOAM." In ASME 2018 37th International Conference on Ocean, Offshore and Arctic Engineering. American Society of Mechanical Engineers, 2018. http://dx.doi.org/10.1115/omae2018-77442.

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Computational fluid dynamics (CFD) has been widely used in the field of marine engineering recent years. In this work, the free falling process and working posture of gravity sampler have been studied using OpenFOAM. The overset grids have been used to simulate the movement of the sampler in the flow field. Main works are as follows: (1) verifying the accuracy of the overset grid method; (2) establishing a numerical model using the Newmark method to analyze the responses of sampler vertical and slant drop; (3) investigating the relationship among the deflection angle, falling speed and samplin
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Asako, Y., and M. Faghri. "Effect of Density Change on Melting of Unfixed Rectangular Phase-Change Material Under Low-Gravity Environment." In ASME 1998 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 1998. http://dx.doi.org/10.1115/imece1998-0637.

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Abstract An enthalpy method is employed to solve transport processes associated with the effect of density change on melting of unfixed rectangular phase change material (PCM) under low-gravity environment. This method permits the phase-change problems to be solved within fixed numerical grids, hence eliminating the need for coordinate transformation. The PCM, initially and its melting temperature, is placed inside a rectangular enclosure. The lower surface of the enclosure is then exposed to a uniform temperature higher than the PCM melting temperature. The difference in densities of solid an
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Liu, Zhanwei, and Hanliang Bo. "Eulerian Grid Approximation Algorithm of Droplet Motion in Gravity Field." In 2022 29th International Conference on Nuclear Engineering. American Society of Mechanical Engineers, 2022. http://dx.doi.org/10.1115/icone29-91421.

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Abstract Accurate and efficient gas-liquid two-phase flow simulation is of great significance to energy, chemical industry, aerospace, environment and other fields. Although the Euler-Lagrange method can accurately simulate the motion of droplets, its computational complexity increases significantly with the number of droplets, thus it’s difficult to be applied to practical applications. Therefore, based on the explanation of the physical mechanism of the droplet movement in the steam-water separation device, combined with the Euler-Lagrange model, the Euler grid approximation model is establi
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He, Xupeng, Ryan Santoso, Marwa Alsinan, Hyung Kwak, and Hussein Hoteit. "Constructing Dual-Porosity Models from High-Resolution Discrete-Fracture Models Using Deep Neural Networks." In SPE Reservoir Simulation Conference. SPE, 2021. http://dx.doi.org/10.2118/203901-ms.

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Abstract Detailed geological description of fractured reservoirs is typically characterized by the discrete-fracture model (DFM), in which the rock matrix and fractures are explicitly represented in the form of unstructured grids. Its high computation cost makes it infeasible for field-scale applications. Traditional flow-based and static-based methods used to upscale detailed geological DFM to reservoir simulation model suffer from, to some extent, high computation cost and low accuracy, respectively. In this paper, we present a novel deep learning-based upscaling method as an alternative to
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Schmidt, Howard, Scott Wright, Cliff Mauroner, et al. "Geomechanical Pumped Storage in Hydraulic Fractures." In SPE Hydraulic Fracturing Technology Conference and Exhibition. SPE, 2023. http://dx.doi.org/10.2118/212347-ms.

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Abstract The capacity and importance of solar and wind power have been growing dramatically over the last few decades and now account for a material fraction of energy on our electric grids. These resources are intermittent, and large-scale, long-term storage methods are required. Here we describe Geomechanical Pumped Storage (GPS), and first results from feasibility studies performed in the field. GPS is a new approach for storing electric energy at scale that is conceptually similar to pumped hydro storage (PHS), which currently accounts for 94% of global energy storage. Like PHS, water is t
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Ghasemisahebi, Esmaiil, Hassan Bararnia, Soheil Soleimanikutanaei, and Cheng-Xian Lin. "Near Wall Deformation and Dynamics of Falling Droplets Under the Effect of Electric Field." In ASME 2017 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 2017. http://dx.doi.org/10.1115/imece2017-72221.

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In this paper, dynamics of the falling droplet under gravity near the wall has been studied numerically. Electrohydrodynamics (EHD) force has been applied to the falling drop to investigate the effect of electric field on its behavior. In order to study the effects of wall boundaries on falling drop dynamics the initial drop is placed close to side walls. The open-source volume-of-fluid solver, Gerris has been used due to its dynamic adaptive grid refinement feature. Three-dimensional study of drops falling under gravity and nonsymmetrical electric field for different ratios of density and vis
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Razali, Nur Myra Rahayu, Nor Idah Kechut, and Karl Dunbar Stephen. "A Novel Upscaling Approach to Enhance Polymer Flooding Modelling and Capture the Complex Flow Dynamics." In SPE Advances in Integrated Reservoir Modelling and Field Development Conference and Exhibition. SPE, 2025. https://doi.org/10.2118/225368-ms.

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Abstract Polymer flooding is a widely utilized enhanced oil recovery (EOR) technique that enhances sweep efficiency by injecting polymer solutions to modify fluid mobility. The effectiveness of polymer flooding is governed by key mechanisms, including mobility control, polymer-rock interactions, gravity segregation, viscous crossflow, and reservoir heterogeneity. These elements combined are critical in fluid displacement mechanisms. Gravitational forces induce gravity segregation, which affects the distribution of fluids within the reservoir and can significantly influence displacement efficie
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Novgorodcev, Andre R., Frank Mols, and Antonio Jarquin Laguna. "Subsea Buoyancy and Gravity Energy Storage System for Deep-Water Applications: A Preliminary Assessment." In ASME 2022 41st International Conference on Ocean, Offshore and Arctic Engineering. American Society of Mechanical Engineers, 2022. http://dx.doi.org/10.1115/omae2022-80422.

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Abstract This article presents a preliminary assessment of a subsea buoyancy and gravity energy storage system (SBGESS). The storage device is designed to power an off-grid subsea water injection system to be installed at the Libra oil field in Brazil at 2000 m below sea level. Two 12MW floating wind turbines provide the energy supply. The system performance is evaluated according to historical wind data from reanalysis models, the water injection pumps’ power curves, the required daily water flow rate, and the maximum number of shutdowns allowed per year. A control strategy with three differe
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Skauge, Arne, Tormod Skauge, Kenneth Stuart Sorbie, Marcel Justin Bourgeois, and Paulo Lee Kung Caetano Chang. "Impact of Viscous Instabilities on WAG Displacement." In ADIPEC. SPE, 2022. http://dx.doi.org/10.2118/211448-ms.

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Abstract In earlier studies, we have investigated water-oil displacement at adverse mobility ratios, and the impact polymer may have to improve the oil recovery. This paper addresses gas-oil displacement which is inherently an unstable displacement process, due to the low phase viscosity and density of the gas phase. In this work, a systematic study of viscous fingering for gas injection and WAG is performed as a function of rock heterogeneity, viscosity ratio, and density difference. The results of these studies aim to improve the design of gas injection and WAG to optimize sweep and total oi
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Judson, Ward, and Samuel Paolucci. "Numerical Solution of Alloy Solidification and Columnar Eutectic Growth Using a Phase-Field Model." In ASME 2001 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 2001. http://dx.doi.org/10.1115/imece2001/htd-24336.

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Abstract Near-eutectic alloys freeze with a macroscopically discrete solid-liquid interface at a temperature below the equilibrium eutectic temperature. The velocity dependence of the freezing temperature results from the microscale species diffusion for microstructures with coupled eutectic growth characteristic of a near-eutectic alloy composition. At solidification rates that are representative of gravity permanent mold and die casting processes, consideration of the nonequilibrium conditions at the interface affects the prediction of the macroscale thermal field, and it in turn affects mic
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