Results 1 to 10 of about 1,253,126 (321)

Sensitivity Analysis of FWI Applied to OVSP Synthetic Data for Fault Detection and Characterization in Crystalline Rocks

open access: yesGeosciences, 2021
We have performed several sensitivity studies to assess the ability of the Full Wave Inversion method to detect, delineate and characterize faults in a crystalline geothermal reservoir from OVSP data. The distant goal is to apply the method to the Soultz-
Yassine Abdelfettah, Christophe Barnes
doaj   +1 more source

Probabilistic approach to Gramian inversion of multiphysics data

open access: yesFrontiers in Earth Science, 2023
We consider a probabilistic approach to the joint inversion of multiphysics data based on Gramian constraints. The multiphysics geophysical survey represents the most effective technique for geophysical exploration because different physical data reflect
Michael S. Zhdanov   +3 more
doaj   +1 more source

Advanced Methods of Joint Inversion of Multiphysics Data for Mineral Exploration

open access: yesGeosciences, 2021
Different geophysical methods provide information about various physical properties of rock formations and mineralization. In many cases, this information is mutually complementary.
Michael S. Zhdanov   +2 more
doaj   +1 more source

High-Dimensional Seismic Data Reconstruction Based on Linear Radon Transform–Constrained Tensor CANDECOM/PARAFAC Decomposition

open access: yesRemote Sensing, 2022
Random noise and missing seismic traces are common in field seismic data, which seriously affects the subsequent seismic processing flow. The complete noise-free high-dimensional seismic dataset in the frequency–space (f-x) domain under the local linear ...
Zhiyuan Ouyang   +3 more
doaj   +1 more source

Viscoelastic Fluid Factor Inversion and Application in Luojia Oilfield Based on Broadband Impedance

open access: yesGeofluids, 2021
Based on the physical quantity of log data, the accurate identification of oil- and gas-bearing properties may be caused by the prestack inversion of fluid prediction, which will affect the success rate of exploration and development.
Ruyi Zhang, Huazhong Wang
doaj   +1 more source

Automatic Horizon Picking Using Multiple Seismic Attributes and Markov Decision Process

open access: yesRemote Sensing, 2023
Picking the reflection horizon is an important step in velocity inversion and seismic interpretation. Manual picking is time-consuming and no longer suitable for current large-scale seismic data processing.
Chengliang Wu   +5 more
doaj   +1 more source

Reviews and syntheses: guiding the evolution of the observing system for the carbon cycle through quantitative network design [PDF]

open access: yesBiogeosciences, 2017
Various observational data streams have been shown to provide valuable constraints on the state and evolution of the global carbon cycle. These observations have the potential to reduce uncertainties in past, current, and predicted natural and ...
T. Kaminski, P. J. Rayner
doaj   +1 more source

Assimilation of atmospheric CO2 observations from space can support national CO2 emission inventories

open access: yesEnvironmental Research Letters, 2022
The Paris Agreement establishes a transparency framework for anthropogenic carbon dioxide (CO _2 ) emissions. It’s core component are inventory-based national greenhouse gas emission reports, which are complemented by independent estimates derived from ...
Thomas Kaminski   +10 more
doaj   +1 more source

Reviews and syntheses: Flying the satellite into your model: on the role of observation operators in constraining models of the Earth system and the carbon cycle [PDF]

open access: yesBiogeosciences, 2017
The vehicles that fly the satellite into a model of the Earth system are observation operators. They provide the link between the quantities simulated by the model and the quantities observed from space, either directly (spectral radiance) or indirectly ...
T. Kaminski, P.-P. Mathieu
doaj   +1 more source

Assessing the Impact of Atmospheric CO2 and NO2 Measurements From Space on Estimating City-Scale Fossil Fuel CO2 Emissions in a Data Assimilation System

open access: yesFrontiers in Remote Sensing, 2022
The European Copernicus programme plans to install a constellation of multiple polar orbiting satellites (Copernicus Anthropogenic CO2 Monitoring Mission, CO2M mission) for observing atmospheric CO2 content with the aim to estimate fossil fuel CO2 ...
Thomas Kaminski   +18 more
doaj   +1 more source

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