The assessment of contaminated land often requires the collection and analysis soil samples discrete or continuous modeling contamination. involves interpolating analyte concentrations between sampled positions. contamination can be expressed either as a map showing spatial distribution across site, frequency distribution, both which compared with threshold. characterization is affected by rand...

Spatial interpolation methods usually differ in their underlying mathematical concepts. Each has inherent advantages and disadvantages, choosing a method should be based on the type of data to analyzed. This paper, therefore, compares evaluates performances well-established techniques that can used estimate monthly rainfall Thailand. The approaches analyzed include inverse distance weighting (I...

     Drought monitoring is a fundamental component of drought risk management. It is normally performed using various drought indices that are effectively continuous functions of rainfall and other hydrometeorological variables. In many instances, drought indices are used for monitoring purposes. Geostatistical methods allow the interpolation of spatially referenced data and the prediction of v...

Precipitation data provide a crucial input for examining hydrological issues, including watershed management and mitigation of the effects floods, drought, landslides. However, they are collected frequently from scarce often insufficient network ground-based rain-gauge stations to generate continuous precipitation maps. Recently, maps derived satellite have not been sufficiently linked rain gau...

Abstract. A previous study by the authors illustrated distribution of naturally occurring radionuclides, i.e., potassium (K40), thorium (Th232), and uranium (U238), in sediment Berg River estuary. The also described Delta Underwater Gamma detection System (DUGS) its usage to measure concentrations these natural radionuclides. It proposed a novel radiometric mapping technique with QGIS and, more...

BACKGROUND Oil and gas development emits known hematological carcinogens, such as benzene, and increasingly occurs in residential areas. We explored whether residential proximity to oil and gas development was associated with risk for hematologic cancers using a registry-based case-control study design. METHODS Participants were 0-24 years old, living in rural Colorado, and diagnosed with can...

Em projetos de navegação, construção portos, reservatórios e barragens faz-se necessário o conhecimento da profundidade volume um corpo hídrico, como uma seção rio ou reservatório água, visto que para a circulação dos navios requer profundidades suficientes em com finalidade captação água é essencial gestão planejamento do abastecimento das atividades dependentes captação. Para tal utiliza-se m...