Résultats de la recherche (65 résultats)

Affinez votre recherche

Par Collection Par Auteur Par Date Par Sujet Par Titre
  • Application of kriging interpolation for glacier mass balance computations
  • This paper investigates the sensitivity of interpolation results to the choice of various kriging parameters when applying kriging interpolation for mass balance computations. In this study kriging was applied to mass balance data of Storglaciären
  • Spatial prediction of river channel topography by kriging
  • Using survey data from a restored gravel-bed river, the AA. demonstrate how transformation to the channel-centered coordinate system facilitates interpretation of the variogram, a statistical model of reach-scale spatial structure used in kriging
  • , and how the choice of a trend model affects the variogram of the residuals from that trend. Similarly, the AA. show how decomposing kriging predictions into their trend and residual components can yield useful information on channel morphology. Cross
  • -validation analyses involving different data configurations and kriging variants indicate that kriging is quite robust and that survey density is the primary control on the accuracy of bed elevation predictions. The root mean-square error of these predictions
  • Application of kriging technique to areal precipitation mapping in Arizona
  • This paper demonstrates the use of the kriging method for mapping and evaluating precipitation data for the State of Arizona. Using 158 rain gauge stations with 30 years or more of record, the precipitation over the state has been modeled
  • The aim of this study is to evaluate some of techniques (local trend analysis, mathematical splines, inverse distance weighting, point kriging, block kriging and point co-kriging) for the purpose of mapping floodplain soil pollution. The quality
  • The AA. summarize the theory of residual maximum likelihood (REML) as it applies to kriging in the presence of trend. They present the equations to show how estimates of the trend are combined with kriging of residuals to give empirical best linear
  • that computed bu ordinary least sqares (OSL) analysis. The map of the predicted surface is similar to that made from kriging with the OLS variogram.
  • Estimation of daily area-average rainfall in Central Florida using arithmetic averaging and kriging
  • Results are compared of using arithmetic averaging and kriging to estimate daily area-average rainfall during the summer 1991 Convection and Precipitation/Electrification Experiment (CaPE) in central Florida, where convective rainstorms often
  • Spatial variability of soil texture in a polder area. 1. Kriging
  • geostatistics. The variability was found to be the largest for the sand and silt contents, but occurred at shorter distances for the clay content. In order to apply puntual-kriging optimally, observations are required at least every 14,5 m for the depth data
  • Predicting ordinary kriging errors caused by surface roughness and dissectivity
  • The aim of this paper is to determine the association of ordinary kriging (OK) estimated errors with the local variability of surface roughness, and to analyse the suitability of probabilistic models for predicting the magnitude of OK errors from
  • Kriging the local risk of a rare disease from a register of diagnoses
  • Het gebruik van kriging bij de kartering van zandbanken, praktische toepassing op de Kwintebank
  • In this paper, 3 geostatistical algorithms (simple kriging with varying local means, kriging with an external drift, colocated ordinary cokriging) are introduced to incorporate an exhaustive secondary information (digital elevation model
  • Semivariograms and kriging: possible useful tools in fold description in Future trends in geomathematics.
  • On the relationship between kriging and state estimation
  • A conceptual deterministic analysis of the kriging technique in hydrology
  • Kriging Analysis (FKA) was used to investigate the scale-dependent correlation structure of some variables by modelling co-regionalization of 10 chemical variables, co-kriging specific factors and mapping them. Results and discussion. The methodology used
  • at different coordinates, kriging was used for interpolation. In this study the kriging standard error is used to evaluate the relative accuracy of the resulting maps. Aerial photographs of 1943, 1968 and 1985 were compared. Especially, the amount and rate
  • Data requirements for kriging: estimation and network design
  • Aquifer parameter identification with kriging and optimum parametrization