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Journal Article
Journal: Geophysics
Published: 26 February 2024
Geophysics (2024) 89 (3): V179–V195.
... the acquisition density or recover missing data caused by noise or instrument errors ( Oropeza and Sacchi, 2011 ). Reconstruction becomes especially challenging when exploring resources in complex geologic structures. Thus, reconstruction techniques, which are low-cost approaches to upsample and interpolate...
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Journal Article
Journal: Geophysics
Published: 26 February 2024
Geophysics (2024) 89 (3): R187–R198.
.... However, the iterative process of simulated annealing entails high computational cost, first because of the large number of iterations needed to explore the variables space, and second because of the large number of simulations needed to adjust the simulation parameters. Although the first issue...
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Journal Article
Journal: Geophysics
Published: 26 February 2024
Geophysics (2024) 89 (3): V197–V208.
... without increasing computational costs. 29 6 2023 5 1 2024 5 1 2024 2024 Society of Exploration Geophysicists distributed acoustic sensing denoising knowledge distillation signal-to-noise ratio enhancement signal recovery Science and Technology Development Plan...
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Journal Article
Journal: Elements
Published: 01 December 2023
Elements (2023) 19 (6): 377–383.
... as ore if dumped as waste where V b represents the value of block b, ton b represents its tonnage, price is the commodity price, C selling considers any selling, transportation, or refining costs per tonne, rec b and z b are the recovery and commodity grade of the block...
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Journal Article
Journal: Elements
Published: 01 December 2023
Elements (2023) 19 (6): 365–370.
... and resistive heating of the coke–slag–alloy bed ( Steenkamp et al. 2020 ). The price of electricity is a key cost driver for SAF smelting of the Mn ores, accounting for 45%–50% of smelter costs. Energy consumption, which is mostly influenced by solid-state reactions in the pre-reduction zone of the SAF...
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Journal Article
Journal: Geophysics
Published: 11 October 2023
Geophysics (2024) 89 (1): WA39–WA51.
...Nick Luiken; Matteo Ravasi; Claire Birnie ABSTRACT To limit the time, cost, and environmental impact associated with the acquisition of seismic data in recent decades, considerable effort has been put into so-called simultaneous shooting acquisitions, where seismic sources are fired at short time...
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Journal Article
Published: 29 September 2023
The Canadian Journal of Mineralogy and Petrology (2023) 61 (5): 1045–1050.
...- and labor-intensive. The image mosaicking process can be automated by commercially available digital microscopes, but these can cost >$100K (all dollar amounts in CAD as of April 2022, including HST and shipping to Canada where applicable), which can present a financial hurdle to many institutions...
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Journal Article
Journal: Geophysics
Published: 25 July 2023
Geophysics (2023) 88 (5): T271–T288.
... with those of the curvilinear grid FDM and standard FDM to verify the effectiveness of our method. The results indicate that our method avoids numerical scattering induced by staircase approximations of Cartesian grids while saving considerable computational costs. Therefore, this method is a better...
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Journal Article
Journal: Geophysics
Published: 18 July 2023
Geophysics (2023) 88 (5): R609–R643.
... requiring accurate initial models or low-frequency long-offset recordings. We make our workflow automatic by reducing the necessity for human inputs and by limiting the number of hyperparameters to adjust in our cost function. In addition, we simultaneously invert the full data set (which may include all...
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Journal Article
Journal: Geophysics
Published: 17 July 2023
Geophysics (2023) 88 (5): B221–B231.
... and inversion mesh offers the flexibility of modeling individual soundings to minimize computational costs, while allowing a commonly shared model domain for the inversion. We validate the method through synthetic and field case studies. The synthetic studies indicate that: (1) a careful forward mesh refinement...
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Journal Article
Journal: Geophysics
Published: 29 June 2023
Geophysics (2023) 88 (5): S163–S174.
... return greater accuracy with a more reasonable computational cost. 24 6 2022 9 3 2023 11 4 2023 2023 Society of Exploration Geophysicists anisotropy 3D depth migration imaging reverse time migration Though eclipsed perhaps in recent years by reverse time migration...
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Journal Article
Journal: Geophysics
Published: 29 June 2023
Geophysics (2023) 88 (5): T237–T258.
... by minimizing phase-velocity dispersion error. Nevertheless, for the complex VTI media, the point-by-point optimization, which only considers a single anisotropic parameter pair, will require high computational cost. To address this issue, we take into account the other two low-cost schemes: the overall...
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Journal Article
Journal: Geophysics
Published: 23 June 2023
Geophysics (2023) 88 (5): D307–D323.
... and consistent results among wells, multiwell interpretation requires the implementation of suitable RPMs and prior models. Furthermore, the computational cost of Bayesian PJI can become prohibitively large as the number of layers and/or wells increases. The main reason for the high computational cost...
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Journal Article
Journal: Geophysics
Published: 21 June 2023
Geophysics (2023) 88 (6): WC13–WC23.
...Yangkang Chen; Alexandros Savvaidis; Yunfeng Chen; Omar M. Saad; Sergey Fomel ABSTRACT Distributed acoustic sensing (DAS) enables the recording of earthquake signals at an unprecedented low cost with high durability using fiber optic cables. It is often compromised by relatively lower data quality...
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