Science topics: GeoscienceGeostatistics
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Geostatistics - Science topic

Geostatistics is a branch of statistics focusing on spatial or spatiotemporal datasets.
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Publications related to Geostatistics (10,000)
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At the global level, Sorghum bicolor (L.), is one of the most important crops, which ranks fifth among all cereals. It is cultivated in Africa, Asia, Oceania and the Americas, where it serves as a source of food and feed for humans and animals, respectively. However, production is constrained by several factors including pests and diseases. Among t...
Article
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Wind speed is an important meteorological factor and is a parameter used to determine the air pollution assessment and the economic feasibility of wind energy as a renewable resource. In particular, the measurement of long-term average wind speed plays a role in the estimating of chronic exposure of air pollution and the siting of wind turbines; th...
Book
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Case Studies in Geospatial Applications to Groundwater Resources provides thorough the most up-to-date techniques in GIS and geostatistics as they relate to groundwater, through detailed case studies that prove real-world applications of remote sensing applications to this subject. Groundwater is the primary source of fresh water in many parts of t...
Article
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Information on water table depth (WTD) in polder areas and wetlands is important in, for example, estimating emissions of greenhouse gases, assessing the agricultural and ecological potential, and flood risk management. The seasonal variation of WTDs is summarized with averages of the yearly highest (shallowest) and lowest (deepest) water tables (M...
Article
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Soil pollution with heavy metals (HMs) has become a world environmental problem. This study focuses on surface soil contamination with Cr, Mn, Co, Ni, Cu, Zn, Cd, Hg, Pb, Fe, and Al, their sources, and potential hazards along the basin of River Swat, Pakistan. The average concentrations (mg/kg) of HMs were the most abundant for Al (24,730.19) follo...
Article
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A correlative Hazard case study of Los Angeles Port has been performed on a tremendous dock fire that occurred on 22nd September 2014 at the Wilmington Dock along with a proposed Machine Learning approach concerning remote sensing techniques, a time-related air quality survey, and port safety codes, which are assessed and based on a modern port gov...
Article
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The Central Andes of Peru are a region of great concern regarding pesticide risk to the health of local communities. Therefore, we conducted an observational study to assess the level of pesticide contamination among Andean people. Analytical chemistry methods were used to measure the concentrations of 170 pesticide-related compounds in hair sample...
Preprint
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In mine planning, geospatial estimates of variables such as comminution indexes and metallurgical recovery are extremely important to locate blocks for which the energy consumption at the plant is minimized and for which the recovery of minerals is maximized. Unlike ore grades, these variables cannot be modeled with traditional geostatistical metho...
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Soil salinization is one of the main threats to soils worldwide, which has serious impacts on soil functions. Our objective was to map and assess salt-affectedness on arable land (0.85 km2) in Hungary, with high spatial resolution, using a combination of ensemble machine learning and multivariate geostatistics on three salt-affected soil indicators...
Article
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Reservoir geomechanical models provide valuable information for various applications ranging from the prediction of surface subsidence to the determination of pore pressure and induced stress changes, wellbore stability, fault reactivation, and caprock integrity. Three-dimensional geological modeling of reservoir geomechanics is an essential tool t...
Preprint
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Stochastic and conditional simulation methods have been effective towards producing realistic realizations and simulations of spatial numerical models that share equal probability of occurrence. Application of these methods are valuable throughout the domain of earth science for their ability to simulate sampled study data. Such stochastic methods...
Technical Report
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This document presents the methodology and results for the estimation of the coverage error of the National Population and Dwellings Census of 2018 (CNPV 2018 in Spanish) of Colombia, at a national and subnational levels. To calculate the census omission for the entire country the Dual System method was used by comparingthe Quality of Life Survey (...
Preprint
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The estimation of rainfall depth-duration-frequency (DDF) curves is necessary for the design of several water systems and protection works. These curves are typically estimated from observed locations, but due to different sources of uncertainties, the risk may be underestimated. Therefore, it becomes crucial to quantify the uncertainty ranges of s...
Article
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Geostatistical models have been widely used to represent disease prevalence in spatial disease mapping. More recently, these models have been employed to estimate geographic 'spread' of artemisinin resistance (AR) in South East Asia from genetic mutations identified in the K13 gene of the malaria Plasmodium falciparum parasite. Here, I revisit the...
Article
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Purpose Stable soil pH is the key property to maintain soil biogeochemical balance, structure, and function stability of the terrestrial ecosystem. Understanding the soil pH change and its influencing factors is critical for maintaining soil quality and the sustainability of agricultural resources. Materials and methods In our study, 215 soil samp...
Article
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In the last 100 years, the overexploitation of the groundwater resources underlying the lacustrine deposits of Mexico City has trigged regional subsidence that manifests itself through the sinking of the ground surface, damaging infrastructure and public services. In this work, geostatistical tools are used to analyze and assess the evolution of th...
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The nutritional and productive attributes of Arabica coffee (Coffea arabica L.) can vary spatially within cultivated areas. Precision farming techniques applied to coffee plantations can diagnose this spatial variability and propose solutions to correct this unevenness. The objective of this study was to characterize the distribution and spatial de...
Article
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The Indus Delta mangroves along the coastline of Pakistan are one of most ecologically diverse ecosystems with unlimited environmental services, socioeconomic benefits and promising climate change mitigation potential in the form of blue carbon. This valuable ecosystem confronts multiple threats due to major environmental factors and anthropogenic...
Article
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The need for reliable information about soil water has become increasingly necessary in recent times. Which represent an important input data into ecological, hydrological, or land surface models. A total number of 460 soil samples were collected to perform inverse distance weighting (IDW) estimates to map some soil quality properties. Moreover, so...
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Modern sensor technologies can provide detailed information about soil variation which allows for more precise application of fertiliser to minimise environmental harm imposed by agriculture. However, growers should lose neither income nor yield from associated uncertainties of predicted nutrient concentrations and thus one must acknowledge and acc...
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ack mackerel (Trachurus japonicus) is one of the main catches in the northern South China Sea. Based on the survey data of the North China Coastal Fishery Resources Survey (2014-2017) in the South China Sea, we used geostatistics to explore the spatial and temporal distribution characteristics of jack mackerel and related eco-dynamic processes. The...
Article
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In order to study the correlation between the vegetation coverage of typical grassland and the thickness of chestnut calcium soil layer, three typical geomorphic types of Wuzhumuqin typical grassland in Inner Mongolia were selected as experimental plots. It uses 3S technology and the methods of landscape ecology and geostatistics to test the image...
Article
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This study presents the map of the external effective annual dose rate (1:200,000 scale) due to terrestrial and cosmic radiation. The terrestrial dose is assessed via gamma ray spectroscopy combining radiometric data from airborne surveys and laboratory measurements. The geostatistical method Collocated CoKriging is used for the spatial interpolati...
Article
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The study aimed to identify and evaluate the spatial variability in laminar erosion in areas using precision agriculture tools. Soil data from three properties in the western region of Paraná state, Brazil, were used: one in the municipality of Céu Azul (area A) and two in Serranópolis do Iguaçu (areas B and C). To identify discrepant data (outlier...
Article
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The Qinglong Area of Tianfu New District in China is the connection-area of Chengdu city, Sichuan Province, which dominantly support the primary agricultural products for the metropolis. The soil quality, therefore, was deteriorating in recent decades due to the intensive planting and industrial pollution, the soil quality evaluation and identify t...
Article
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A column experiment at a laboratory level was carried out to assess the effect of the application of nanotechnology in the decontamination of soils and alluvial deposits with high levels of potentially toxic elements (PTEs). A suspension of zero-valent iron nanoparticles (nZVI) wasinjected at three different concentrations in selected samples (two...
Article
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The geochemical composition of bedrock is the key feature determining elemental concentrations in soil, followed by anthropogenic factors that have less impact. Concerning the latter, harmful effects on the trophic chain are increasingly affecting people living in and around urban areas. In the study area of the present survey, the municipalities o...
Article
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The stability of the retaining system under seismic conditions is an important aspect of safe design in earthquake-prone areas. In addition, this stability is highly dependent on soil uncertainty and failure mode contribution. On the other hand, imaging the borehole data directly into the analysis section and ignoring the known data by using uncond...
Article
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Besides the standard parameters used for colorectal cancer (CRC) management, new features are needed in clinical practice to improve progression-free and overall survival. In some cancers, the microenvironment mechanical properties can contribute to cancer progression and metastasis formation, or constitute a physical barrier for drug penetration o...
Article
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Introduction: This study aimed to produce community-level geo-spatial mapping of confirmed COVID-19 cases in Ontario Canada in near real-time to support decision-making. This was accomplished by area-to-area geostatistical analysis, space-time integration, and spatial interpolation of COVID-19 positive individuals. Methods: COVID-19 cases and locat...
Article
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An increasing interest in models for multivariate spatio-temporal processes has been noted in the last years. Some of these models are very flexible and can capture both marginal and cross spatial associations amongst the components of the multivariate process. In order to contribute to the statistical analysis of these models, this paper deals wit...
Preprint
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Closed-loop reservoir management (CLRM), in which history matching and production optimization are performed multiple times over the life of an asset, can provide significant improvement in the specified objective. These procedures are computationally expensive due to the large number of flow simulations required for data assimilation and optimizat...
Preprint
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Background: Pregnant women in sub-Saharan Africa (SSA) experience the highest levels of maternal mortality and stillbirths due to predominantly avoidable causes. Antenatal care (ANC) can prevent, detect, alleviate, or manage these causes. While eight ANC contacts are now recommended, coverage of the previous minimum of four visits (ANC4+) remains l...
Preprint
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This paper proposes a two-stage estimation approach for a spatial misalignment scenario that is motivated by the epidemiological problem of linking pollutant exposures and health outcomes. We use the integrated nested Laplace approximation method to estimate the parameters of a two-stage spatio-temporal model; the first stage models the exposures w...
Article
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Many thousands of large dam reservoirs have been constructed worldwide during the last 70 years to increase reliable water supplies and support economic growth. Because reservoir storage measurements are generally not publicly available, so far there has been no global assessment of long-term dynamic changes in reservoir water volumes. We overcame...
Article
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With the complicated geology of vein deposits, their irregular and extremely skewed grade distribution, and the confined nature of gold, there is a propensity to overestimate or underestimate the ore grade. As a result, numerous estimation approaches for mineral resources have been developed. It was investigated in this study by using five machine...
Article
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Background Onchocerciasis is a neglected tropical filarial disease transmitted by the bites of blackflies, causing blindness and severe skin lesions. The change in focus for onchocerciasis management from control to elimination requires thorough mapping of pre-control endemicity to identify areas requiring interventions and to monitor progress. Onc...
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Geological modeling is the primary task of any exploratory geological investigation, and it is performed even during the mine development. In the study area, the Serra dos Quintos Formation hosts banded iron formations represented by assorted itabirites. The database used in this work was exploited from a geological databank which was structured to...
Article
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The urban surface temperature is a complex integrated natural-human geographic phenomena; with the development of geostatistical methods and the application of multisource data, its research has gradually shifted from a single perspective to a study that integrates multiple factors such as nature and humanity. However, based on the context of the i...
Article
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Arsenic (As) contamination in drinking groundwater sources is a common environmental problem in Pakistan. Therefore, we collected a total of (n = 81) drinking groundwater samples from various groundwater sources, from two districts' namely Ghotki (n = 44) and Nawab Shah (n = 37) of Sindh, Province, Pakistan. The current research aimed to investigat...
Conference Paper
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In geotechnical engineering, settlement is defined as the vertical movement of the ground. Excessive settlement can lead to distortion and damage to structures, services, and infrastructure that are founded on the material subject to the movement. It is at least intuitively evident that variability in soil properties will have a significant effect...
Preprint
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Spatial aggregation with respect to a population distribution involves estimating aggregate quantities for a population based on an observation of individuals in a subpopulation. In this context, a geostatistical workflow must account for three major sources of `aggregation error': aggregation weights, fine scale variation, and finite population va...
Article
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Background Grazing disturbance plays an important role in the desert steppe ecosystem in Inner Mongolia, China. Previous studies found that grazing affected the spatial distribution of species in a community, and showed patchiness characteristics of species under different grazing treatments. Artemisia frigida is the dominant species and semi-shrub...
Article
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Introduction Considering the different hydrological, hydraulic and environmental behaviors of the urban area compared to other natural areas, the effects of urban expansion on the response of the natural hydrologic cycle components, and available water resources in particular are among the most important research topics of the last decade. Limited...
Article
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The fractured-vuggy reservoirs (FVRs) wrapped in strike-slip fault-damaged zones (SSFDZs) are the main drilling targets for oil-gas exploration in the Tarim Basin. The seismic characteristics of the FVRs are strong wave crest, strong wave trough, chaotic waveform and the random combination of these three types of waveforms, which are distributed in...
Article
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Long-term hour-specific air pollution exposure estimates have rarely been of interest in epidemiological research. However, this can be relevant for studies that aim to estimate the residential exposure for the hours that subjects mostly spend time there, or for those hours that they may work in another location. Here, we developed a model by spati...
Conference Paper
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The non-productive time due to instability issues in the understudy field has reached over 90% of wellbore problems along the production section (8½"). This paper aims to construct a calibrated three-dimensional mechanical earth model (3DMEM) that can be used to conduct a comprehensive geomechanical analysis of the trouble zones issues. The results...
Article
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Conducting groundwater quality studies is a practical necessity for obtaining quality information from water resources. Corrosion and sedimentation are important characteristics and quality indicators of groundwater. The purpose of this study is to analyze the geostatistical potential of corrosion and sedimentation of groundwater as important indic...
Article
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Transport networks play a critical role for living communities, as they facilitate the exchange of people and goods and foster economic growth. Improving their resilience against seismic hazards, among which liquefaction is by far one of the most significant and complex, is consistent with most of the Sustainable Development Goals pinpointed by the...
Article
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With the development of computer technology and the exponentially increasing capacity in generating new data, using big data to analyze various problems has become a new norm of research and development. Nowadays, atmospheric science, genomics, biology, remote sensing, medical records, and other fields can generate new data in high-throughput fashi...
Article
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Continuous and slow-moving deep-seated landslides entail challenges for the effective planning of mitigation strategies aiming at the reduction of landslide movements. Given that the activity of most of these landslides is governed by pore pressure variations within the shear zone, profound knowledge about their hydrogeological control is required....
Article
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In the mine production process, pre-established geological models should be updated in a timely manner based on new geologic and mining data. Three-dimensional (3D) geological models of different engineering schedules can effectively visualize the spatial distribution of the ore body in real time, displaying changes in its structure and occurrence...
Article
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Introduction Undernutrition is a serious global health issue, and stunting is a key indicator of children's nutritional status which results from long-term deprivation of basic needs. Ethiopia, the largest and most populous country in Sub-Saharan Africa, has the greatest rate of stunting among children under the age of five, yet the problem is unev...
Poster
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Spatial variability of vine productivity in winegrapes is important to characterise as both yield and quality are relevant for the production of different wine styles and products. Few studies have analysed spatial variability of individual fruit compositional attributes, and even fewer in Vitis vinifera L. cv. Cabernet Sauvignon in California, USA...
Article
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Geostatistical estimation methods rely on experimental variograms that are mostly erratic, leading to subjective model fitting and assuming normal distribution during conditional simulations. In contrast, Machine Learning Algorithms (MLA) are (1) free of such limitations, (2) can incorporate information from multiple sources and therefore emerge wi...