VARIOGRAM

作品数：37被引量：65H指数：5
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相关机构：中国石油勘探开发研究院云南师范大学更多>>
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Joint simulation of cross-correlated ore grades and geological domains:an application to mineral resource modeling
《Frontiers of Earth Science》2023年第2期417-436,共20页Nasser MADANI Mohammad MALEKI 
The first author is thankful to Nazarbayev University for funding this work via“Faculty Development Competitive Research Grants for 2018-2020 under Contract No.090118FD5336 and 2021-2023 under Contract No.021220FD4951”;This work is supported by Faculty Development Competitive Research Grants for 2018-2020 under Contract No.090118FD5336 and 2021-2023 under Contract No.021220FD4951.
Spatial modeling of ore grades is frequently impacted by the local variation in geological domains such as lithological characteristics,rock types,and geological formations.Disregarding this information may lead to bi...
关键词：geostatistical simulation categorical variable continuous variable geological domain variogram inference 
Abandoned land identification in karst mountain area based on time series SAR characteristics at geo-parcels scale
《Journal of Mountain Science》2023年第3期792-809,共18页ZHOU Zhong-fa WANG Ling-yu CHEN Quan LUO Jian-cheng ZHAO Xin ZHANG Shu ZHANG Wen-hui LIAO Juan LYU Zhi-jun 
supported by the Guizhou Provincial Science and Technology Foundation(Qiankehe ZK[2022]-302);the National Natural Science Foundation of China,(Grant NO.41661088,41631179 and 42071316);the National Key Research and Development Program of China(Grant NO.2017YFB0503600);the Key Laboratory of Natural Resources Monitoring in Tropical and Subtropical Area of South China,Ministry of Natural Resources(No.2022NRM0004);Excellent Youth Project of Hunan Provincial Education Department(22B0725)。
Mapping abandoned land is very important for accurate agricultural management.However,in karst mountainous areas,continuous high-resolution optical images are difficult to obtain in rainy weather,and the land is fragm...
关键词：Sentinel-1 SAR Abandoned farmland Semi variogram function Farmland geo parcel Time seriescharacteristics Texture feature Karst mountainous area 
Sampling Geostatistical Structures in Extremal Framework
《Open Journal of Statistics》2023年第1期46-60,共15页Fabrice Ouoba Hay Yoba Talkibing Diakarya Barro 
Geostatistics of extreme values makes it possible to model the asymptotic behavior of random phenomena that depend on time or space. In this paper, we propose new models of the extremal coefficient of a stationary ran...
关键词：Extremal Index Extremogram VARIOGRAM COPULAS Stationary Process Extreme Values 
Imaging Analysis of Trabecular Bone Texture Based on the Initial Slope of Variogram of Ultra-Distal Radius Digital X-Ray Imaging: Effects on Bone Mineral Density and Age
《Open Journal of Radiology》2022年第3期78-85,共8页Jianfeng Chen Qifeng Ying 
Background: When applied to trabecular bone X-ray images, a method for analyzing trabecular bone texture based on the initial slope of variogram (ISV) was used to assess the trabecular bone health. Methodology: Data f...
关键词：Trabecular Bone Texture Digital X-Ray Image Bone Mineral Density Ultra-Distal Radius Initial Slope of Variogram 
The Effect of Using Cokriging against Ordinary Kriging When Estimating Phosphate Deposits at Elsebaiya Area, Egypt
《World Journal of Engineering and Technology》2020年第4期700-711,共12页H. A. Farag M. A. Gouda M. A. Yassin 
Application of geostatistical techniques when evaluating mineral deposits could reflect some geological characteristics which help through the stage of planning and production. In the present study
《Pedosphere》2019年第5期577-589,共13页SUN Xiaolin WANG Huili Dermot FORRISTAL FU Weijun Hubert TUNNEY Chaosheng ZHANG 
?nancially supported by the National Natural Science Foundation of China (Nos. 41541006 and 41771246);co-funded by Enterprise Ireland and the European Regional Development Fund (ERDF) under the National Strategic Reference Framework (NSRF) 2007–2013
Sampling plays an important role in acquiring precise soil information required in modern agricultural production worldwide, which determines both the cost and quality of final soil mapping products. For sampling desi...
关键词：Key Words. geostatistics  population variogram  sampling error  sampling grid spacing soil-forming environment soil information soil mapping spatial variability 
Spatiotemporal interpolation of precipitation across Xinjiang, China using space-time CoKriging被引量：1
《Journal of Central South University》2019年第3期684-694,共11页HU Dan-gui SHU Hong 
Project(17D02)supported by the Open Fund of State Laboratory of Information Engineering in Surveying,Mapping and Remote Sensing,Wuhan University,China;Project supported by the State Key Laboratory of Satellite Navigation System and Equipment Technology,China
In various environmental studies, geoscience variables not only have the characteristics of time and space, but also are influenced by other variables. Multivariate spatiotemporal variables can improve the accuracy of...
关键词：space-time CoKriging product-sum model VARIOGRAM PRECIPITATION interpolation 
Conventional and Fractal Variogram Based on Time—Space Analysis of Seismicity Distribution—Case Study: Algeria Seismicity (1673-2010)
《Journal of Geoscience and Environment Protection》2018年第11期147-172,共26页Moh-Amokrane Aitouche Mabrouk Djeddi 
Geostatistics belongs to the wide class of statistical methods. It is used and applied to analyze and predict the values associated with spatial or spatio-temporal phenomena such as seismological events. Thus, in addi...
关键词：Algeria SEISMICITY CATALOG B-VALUE GEOSTATISTICS Semiv Variogr Am FRACTAL 
A Method to Integrate Geological Knowledge in Variogram Modeling of Facies: A Case Study of a Fluvial Deltaic Reservoir
《International Journal of Geosciences》2018年第6期337-353,共17页Margaret Akoth Oloo Congjiao Xie 
Variograms are important tools in the spatial distribution of facies and petrophysical properties. Due to the scarcity of subsurface well data, both spatially and quantity wise, variograms representing the data tend t...
关键词：Geological Knowledge DEPOSITIONAL Environment Energy Level VARIOGRAM 
Mapping forest vegetation patterns in an Atlantic-Mediterranean transitional area by integration of ordination and geostatistical techniques
《Journal of Plant Ecology》2018年第1期114-122,共9页Adriana E.Olthoff Cristina Gómez Josu G.Alday Carolina Martínez-Ruiz 
J.G.A.was supported by the program‘Juan de la Cierva-Incorporación’fellowships(IJCI-2014-21393).
Aims Forest vegetation variability may be explained by the complex inter-play among several spatial structuring factors,including climate and topography.We modelled the spatial variability of forest vegetation assembl...
关键词：coenocline KRIGING National Forest Inventory ORDINATION VARIOGRAM 
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