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Sequential Gaussian simulation for geosystems modeling:A machine learning approach

Geoscience Frontiers 2022年第1期13卷 1-14页

作者： Tao Bai Pejman Tahmasebi College of Engineering and Applied Science University of WyomingLaramieWY 82071USA

Sequential Gaussian Simulation(SGSIM)as a stochastic method has been developed to avoid the smoothing effect produced in deterministic methods by generating various stochastic *** of the main issues of this technique is,however,an intensive computation related to the inverse operation in solving the Kriging system,which significantly limits its application when several realizations need to be produced for uncertainty *** this paper,a physics-informed machine learning(PIML)model is proposed to improve the computational efficiency of the *** this end,only a small amount of data produced by SGSIM are used as the training dataset based on which the model can discover the spatial correlations between available data and unsampled *** achieve this,the governing equations of the SGSIM algorithm are incorporated into our proposed *** quality of realizations produced by the PIML model is compared for both 2D and 3D cases,visually and ***,computational performance is evaluated on different grid *** results demonstrate that the proposed PIML model can reduce the computational time of SGSIM by several orders of magnitude while similar results can be produced in a matter of seconds.

关键词： Artificial intelligence Uncertainty geosystems Statistical modeling

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Questions of Theory and Practice: To Synthesis, Analysis and Evaluation Natural Systems of Pacific Russia Based on Models of Landscape geosystems

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Journal of Geoscience and Environment Protection 2019年第1期7卷 81-92页

作者： V. T. Starozhilov Pacific International Landscape Center Far Eastern Federal University Vladivostok Russian Federation

The results of long-term author’s scientific research in the field of geological and geographical study and landscape mapping of large regional links, such as Sikhote-Alinsky, Sakhalinsky, Kamchatsky, Anadyrsky, located in the Pacific landscape belt of Russia, are considered (Starozhilov, 2013). The studies were conducted at the medium scale (1:500,000) and were accompanied by landscape mapping (Starozhilov, 2016). The proposed article discusses the theory and practice of the overall results and the strategic vision of applying the landscape approach with selected examples. The wide range of possibilities of applying the landscape approach in studying the interaction of nature and society is emphasized. The importance and the indisputable need for the synthesis, analysis and assessment of natural systems based on the mapping of landscape geosystems to assess the environmental management of not only regional territories, but also of Pacific Russia as a whole are noted.

关键词： Synthesis Analysis Assessment Nature Landscape geosystems Theory Practice

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Cartographic Approach in Studying Landscape Northwestern of Part Western Siberia

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American Journal of Plant Sciences 2015年第13期6卷 2177-2184页

作者： Ekaterina Kuzmenko Institute of geography Russian Academy of Sciences Siberian Branch Irkutsk Russia

The structure and dynamics of geosystems: plant of forest and bogs in the northwestern part of Western Siberia is considered by using the Kazym-Lyamin interfluve, based on the landscape-assessment map for the middle part of the Khanty-Mansi Autonomous District. The study used the landscape structural-dynamical approach and the methods of studying the spatio-temporal dynamics of taiga geosystems. Theoretical and methodological research on the development of the landscape-assessment map for Asian Russia is high on the cartographic agenda of the V. B. Sochava Institute of geography SB RAS. The methodic research is to be used to Landsat-5 TM in GIS Multi-Spec and Qgis. An analysis is also made of the topographic, geomorphologic and forest 1:200,000 maps, the profiles characterize the lithology, field data of geobotanical and soil descriptions, and experimental permanent station operated. The landscape structure of this area and its hierarchical subordination are represented in the map legend in terms of groups of facies which are combined into regional-typological classification units: groups of geoms, classes, and types of natural environment. Landscape mapping and planning will help to timely prevent and forecast the magnitudes of disturbances to natural environment using and be as the basis for a package of optimal nature-conservation measures and target-oriented technogenic and anthropogenic impacts.

关键词： geosystems Landscape Map Successional Dynamics Plant

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