3D stochastic modeling framework for Quaternary sediments using multiple-point statistics: A case study in Minjiang Estuary area, southeast China

Chen, Qiyu; Ma, Xiaogang; Li, Xinchuan; He, Zhenwen

doi:10.1016/j.cageo.2019.104404

Cited by 53 publications

(15 citation statements)

References 39 publications

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“…Sedimentary Layers e Quaternary sediments are slightly or not influenced by the tectonic movement [20], but the distribution of sedimentary strata is fragmented [21], as the phenomenon of lenses and strata pinch-out is common. Compared to investigations such as Quaternary surveying and hydrogeological surveying, EGS-GIS is the finest and most accurate surveying method in the field of sedimentary layers to reflect the engineering properties of Quaternary sediments.…”

Section: Basic Characteristics Of Engineeringmentioning

confidence: 99%

Study on the Method of Automatically Drawing Multiscale Engineering Geotechnical (Geological) Sections Step by Step of Engineering Layers including Lenses

Zhao

Zhou

et al. 2022

Advances in Civil Engineering

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Drawing the engineering sections automatically and efficiently is significant for the investigation results of geotechnical engineering to provide the scientific and detailed geological basis for urban planning and construction, but it is still difficult to draw the engineering geological sections automatically without manual edit. A method, taking the engineering strata in Quaternary loose sedimentary as the research object, was proposed to automatically draw multiscale engineering geological sections of engineering layers including lenses and strata pinch-out based on the investigation results and borehole data of geotechnical (geological) engineering. Firstly, the spatial information of the top and bottom boundaries of any borehole layer were extracted, and then based on the stratigraphical column, the borehole layer was studied by a step-by-step coarsen from the finest stratigraphical column to the coarsest stratigraphical column, and the occupation relationship among layers was distinguished; secondly, from the coarsest stratigraphical column to the finest level stratigraphical column step-by-step and taking the radial basis function (RBF) interpolation as an example, top and bottom boundaries were interpolated, respectively, by following the order of current stratigraphical column; next, topological relationship among engineering layers was processed according to contact relationship of strata, and strata boundaries with 0 thickness were deleted; and finally, auxiliary information such as scaler and legend were added in section to complete the drawing of multiscale sections. Studies of one site case and one region case demonstrate that the method can perfectly and automatically draw the engineering geological section of engineering layers including lenses and strata pinch-out.

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Section: Basic Characteristics Of Engineeringmentioning

confidence: 99%

Study on the Method of Automatically Drawing Multiscale Engineering Geotechnical (Geological) Sections Step by Step of Engineering Layers including Lenses

Zhao

Zhou

et al. 2022

Advances in Civil Engineering

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“…In view of this, the birth of the multiple-point geostatistical simulation method could overcome the shortcomings of the two-point geostatistics more effectively. It equips the advantages of two-point geostatistics and stochastic simulation at the same time and it has been widely used in the eld of earth scienti c research [33][34][35][36][37][38] .…”

Section: Multiple-point Geostatisticsmentioning

confidence: 99%

Extraction of Weak Geochemical Anomalies Based on Multiple-point Geostatistics and Local Singularity Analysis

Fan

Liu

Chen

et al. 2022

Preprint

Self Cite

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The traditional interpolation might cause smoothing effect on the geochemical elements’ concentration due to its moving weighted average properties. Meanwhile, it cannot describe the elements’ spatial variability if the data’s distribution is sparse, which could cause uncertainties when inferring the information at the unsampled locations. Since the Multiple-Point Geostatistics (MPS) is a stochastic simulation based on the pattern’s statistical characteristics which conducted by spatial multiple points, it can reduce the smoothing effect and quantify the spatial variabilities and uncertainties. Meanwhile, the Local Singularity Analysis (LSA) could identify the weak geochemical anomalies more effectively due to its statistical self-similarity. Therefore, we proposed a new method combing the advantages of both MPS and LSA for improving the identification of the weak geochemical anomalies and quantifying the uncertainty distribution. We firstly treated the geochemical raster data as the Training Images (TIs) and then the Direct Sampling (DS) algorithm was used to perform elements spatial distribution. The LSA and information fusion were finally adopted to obtain the probability map of geochemical anomalies. We verified our methods by utilizing the 1:200,000 stream sediments geochemical data, and the results show that these identified anomalous fields could overcame the smoothing effect and quantify the distribution uncertainties on different simulation results. According to the ROC curves’ analysis, this method has a better performance than the Kriging-based ones and its anomalous fields were more consistent with the determined Fe deposits, which can help us have a clearer understanding for the metallogenic backgrounds and the element distribution patterns.

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“…3D geological modeling is an ideal solution to these issues [30][31][32]. Høyer et al [33] constructed a 3D geological model using AEM resistivity data; Lau et al [34] established a 3D geologic model to research the structure of Quaternary deposits; Chen et al [35] constructed a 3D stochastic model to simulate the characterization of the internal attributes of sedimentary strata; Erharter et al [36] developed a 3D stochastic model to represent the sediment bodies; and there are also many technical approaches, such as machine learning, that have been applied to optimize the construction of 3D geological models, especially when fractures and fracture networks are involved [37][38][39]. While the research mentioned above has presented excellent approaches for determining the spatial structure or inner attributes of Quaternary loose sedimentary strata, they mainly focused on the 3D visual interpretation of boreholes [40] and geochemical data [41] (mainly seismic data [42,43]), or 3D simulation on a small scale with a strict hypothesis, and there are few reports on the relevance of the construction of 3D geological models of Quaternary loose sedimentary strata based on identifying the spatial distribution in the whole study area by deep mining little pieces of Quaternary geological field data.…”

Section: Introductionmentioning

confidence: 99%

Study on the Construction of 3D Geological Model of Quaternary Loose Sedimentary Strata Based on the Global Stratigraphic Discrete Points

Zhu

Yan

Zhang

et al. 2022

Water

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Accurately depicting the spatial structure characteristics of Quaternary loose sedimentary strata is not only of great significance for the research of Quaternary geological evolution, but also for the analysis of spatial variation characteristics of the inner hydrogeological and engineering geological attributes of the strata. In this study, an approach for constructing a 3D geological model of Quaternary loose sedimentary strata is proposed based on global stratigraphical discrete points. The approach obtains the discrete control point set of each stratum by using limited borehole data for interpolation and encryption, and the contact relationships and intersection modes of adjacent strata can be determined via the analysis of stratigraphic sequence; finally, taking these as the professional basis, the construction of the 3D geological model of Quaternary loose sedimentary strata can be carried out. This application can not only accurately describe the three-dimensional spatial distribution characteristics of the Quaternary loose sedimentary strata, it can also be used to perform a layered simulation of the spatial variation characteristics of the inner geological properties of the Quaternary loose sedimentary strata, such as lithology, porosity, and water content, by taking the three-dimensional spatial framework of each stratum as the simulation boundary. Finally, this study takes the citizen center of Xiong’an new area as an example in order to verify the reliability and advancement of the 3D geological modeling scheme.

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3D stochastic modeling framework for Quaternary sediments using multiple-point statistics: A case study in Minjiang Estuary area, southeast China

Cited by 53 publications

References 39 publications

Study on the Method of Automatically Drawing Multiscale Engineering Geotechnical (Geological) Sections Step by Step of Engineering Layers including Lenses

Study on the Method of Automatically Drawing Multiscale Engineering Geotechnical (Geological) Sections Step by Step of Engineering Layers including Lenses

Extraction of Weak Geochemical Anomalies Based on Multiple-point Geostatistics and Local Singularity Analysis

Study on the Construction of 3D Geological Model of Quaternary Loose Sedimentary Strata Based on the Global Stratigraphic Discrete Points

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