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Showing 1-20 of 7,134 results
  1. Fitting models for a grain size distribution: a review

    Many models are available to fit the curve of a grain size distribution, GSD. The article lists 61 models and 33 comparative studies of models....

    Article 25 October 2023
  2. Reconstruction of geodetic time series with missing data and time-varying seasonal signals using Gaussian process for machine learning

    Seasonal signals in satellite geodesy time series are mainly derived from a number of loading sources, such as atmospheric pressure and hydrological...

    Keke Xu, Shaobin Hu, ... Yifu Liu in GPS Solutions
    Article 29 February 2024
  3. Modeling spatial distribution of earthquake epicenters using inhomogeneous Log-Gaussian Cox point process

    This paper explores the applicability of Inhomogeneous Log-Gaussian Cox point process to a complex spatial mechanism generating the tightly clustered...

    Salma Anwar, Muhammad Yaseen, ... Yasir Latif in Modeling Earth Systems and Environment
    Article 01 February 2024
  4. A new approach for estimating solar radiation using Gaussian distribution and develo** new model

    The main aim of this study is to develop a new model using the Gaussian distribution in global solar radiation estimation. In this study, a new...

    Yusuf Alper Kaplan, Ayse Gul Kaplan in Theoretical and Applied Climatology
    Article 29 September 2023
  5. Geostatistics in the Presence of Multivariate Complexities: Comparison of Multi-Gaussian Transforms

    One of the most challenging aspects of multivariate geostatistics is dealing with complex relationships between variables. Geostatistical...

    Sultan Abulkhair, Peter A. Dowd, Chaoshui Xu in Mathematical Geosciences
    Article Open access 05 April 2023
  6. A feasibility study of using a best group fitting method to determine wind data probability distribution

    Probability distributions of wind data in a short time scale, such as hourly, are critically important for the risk assessment in relation to wind...

    Kaelia Okamura, Tingting Tang, Samuel S.P. Shen in Theoretical and Applied Climatology
    Article 01 March 2023
  7. A spatial-varying non-isotropic Gaussian-based convolution filter for smoothing GRACE-like temporal gravity fields

    Abstract

    The strong noise of satellite-based Time-Variable Gravity (TVG) field is often suppressed by applying the averaging filters. However, how to...

    Fan Yang, Shuhao Liu, Ehsan Forootan in Journal of Geodesy
    Article 06 July 2024
  8. Probabilistic estimation of hydraulic fracture half-lengths: validating the Gaussian pressure-transient method with the traditional rate transient analysis-method (Wolfcamp case study)

    Despite significant advancements in geomodelling technologies, accurately estimating hydraulic fracture half-length remains a challenging task. This...

    Dandi Alvayed, Mohammed Sofian Ali Khalid, ... Ruud Weijermars in Journal of Petroleum Exploration and Production Technology
    Article Open access 18 August 2023
  9. Variational quality control of non-Gaussian innovations and its parametric optimizations for the GRAPES m3DVAR system

    The magnitude and distribution of observation innovations, which have an important impact on the analyzed accuracy, are critical variables in data...

    Jie He, Yang Shi, ... Xulin Ma in Frontiers of Earth Science
    Article 06 July 2022
  10. Probabilistic Back Analysis Based on Nadam, Bayesian, and Matrix-Variate Deep Gaussian Process for Rock Tunnels

    Efficiently determining the properties of the rock mass is essential for evaluating tunnel stability in tunneling projects. The back-analysis...

    Kai Chen, Andres Alfonso Pena Olarte in Rock Mechanics and Rock Engineering
    Article 01 July 2024
  11. Seismic Data Integration Workflow in Pluri-Gaussian Simulation: Application to a Heterogeneous Carbonate Reservoir in Southwestern Iran

    In this study, we present a procedure for reservoir property modeling in a channelized carbonate reservoir based on hierarchical geostatistical...

    Mohammadali Rezaei, Mohammad Emami Niri, ... Xavier Emery in Natural Resources Research
    Article 05 April 2023
  12. Prediction of soil compaction parameters through the development and experimental validation of Gaussian process regression models

    The laboratory determination of maximum dry density ( ρ dmax ) and optimum moisture content ( w opt ) of soils requires considerable time and energy....

    Muhammad Hasnain Ayub Khan, Turab H. Jafri, ... Muhammad Naqeeb Nawaz in Environmental Earth Sciences
    Article 10 February 2024
  13. Electrical rock ty** using Gaussian mixture model to determine cementation factor

    Many studies have worked on the estimation of fluid saturation as an important petrophysical property in hydrocarbon reservoirs. Based on Archie's...

    Reza Najafi-Silab, Aboozar Soleymanzadeh, ... Shahin Kord in Journal of Petroleum Exploration and Production Technology
    Article Open access 02 March 2023
  14. Estimation of probabilistic CPT-based soil profile using an unsupervised Gaussian mixture model

    This paper develops a Gaussian Mixture Model (GMM) method to produce the soil profile based on the cone penetration test results (CPT). The...

    Ressol R. Shakir, Hui Wang in Arabian Journal of Geosciences
    Article 03 March 2023
  15. Intelligent velocity picking and uncertainty analysis based on the Gaussian mixture model

    The stacking velocity is often obtained manually. However, manually picking is inefficient and is easily affected by subjective factors such as the...

    **aowei Wang, Yang Gao, ... Sanyi Yuan in Acta Geophysica
    Article 14 July 2022
  16. Estimation of source parameters using a non-Gaussian probability density function in a Bayesian framework

    Source parameters represent key factors in seismic hazard assessment and understanding source physics of earthquakes. In addition to conventional...

    Nana Yoshimitsu, Takuto Maeda, Tomonari Sei in Earth, Planets and Space
    Article Open access 08 March 2023
  17. Gaussian active learning on multi-resolution arbitrary polynomial chaos emulator: concept for bias correction, assessment of surrogate reliability and its application to the carbon dioxide benchmark

    Surrogate models are widely used to improve the computational efficiency in various geophysical simulation problems by reducing the number of model...

    Rebecca Kohlhaas, Ilja Kröker, ... Wolfgang Nowak in Computational Geosciences
    Article Open access 14 April 2023
  18. Augmenting Stationary Covariance Functions with a Smoothness Hyperparameter and Improving Gaussian Process Regression Using a Structural Similarity Index

    Abstract

    Gaussian process (GP) regression provides a probabilistic framework for modeling geochemistry in mineral resource estimation and...

    Anna Chlingaryan, Raymond Leung, Arman Melkumyan in Mathematical Geosciences
    Article Open access 06 September 2023
  19. Mitigating Velocity Errors in Least-Squares Imaging Using Angle-Dependent Forward and Adjoint Gaussian Beam Operators

    Compared with traditional adjoint-based migration, least-squares migration (LSM) can reduce finite-frequency effects, remove acquisition footprints...

    Jidong Yang, Jian** Huang, ... Yang Zhao in Surveys in Geophysics
    Article 15 November 2021
  20. Ensemble Smoother with Multiple Data Assimilation as a Tool for Curve Fitting and Parameter Uncertainty Characterization: Example Applications to Fit Nonlinear Sorption Isotherms

    The ensemble smoother with multiple data assimilation (ES-MDA) coupled to a normal-score transformation is used to fit a Langmuir isotherm curve to...

    Vanessa A. Godoy, Gian F. Napa-García, J. Jaime Gómez-Hernández in Mathematical Geosciences
    Article 01 December 2021
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