نتایج جستجو برای: ordinary kriging method showed the best cross

تعداد نتایج: 16322562  

Journal: :E3S web of conferences 2021

Knowing the piezometric levels evolution of an aquifer is essential for planning use water resources in cities central México, such as San Luis Potosí, whose population depends almost entirely on groundwater. Applying geostatistical methods from georeferenced data can reliably provide information spatial variability valley piezometry. The objective this study to evaluate static Potosí Valley, t...

Journal: :تحقیقات آب و خاک ایران 0
نادر پیرمرادیان دانشگاه گیلان مریم طاهرپرور دانشگاه گیلان مجید وظیفه دوست دانشگاه گیلان

landsat 7 etm+ data is widely used in studies of the spatial distribution kc and vegetation cover parameters in regional and global scales but slc failure has greatly reduces its usefulness. additionally, the failure is permanent and has failed subsequent attempts to recover the slc, so required and practical way to address this problem is filling the pixels of missed data in the slc-off images...

2008
Stijn Janssen Frans Fierens Gerwin Dumont Clemens Mensink

Real-time assessment of the ambient air quality has gained an increased interest in recent years. To give support to this evolution, the statistical air pollution interpolation model RIO is developed. Due to the very low computational cost this interpolation model is an efficient tool for an environment agency when performing real-time air quality assessments. Beside this, a reliable interpolat...

Journal: :caspian journal of enviromental sciences 0

estimation and mapping of forest resources are preconditions for management, planning and research. in this study, we applied kriging interpolation of geostatistics for estimation and mapping of forest stock at-tributes in a natural, uneven-aged, unmanaged forest in the caspian region of northern iran. the site of the study has an area of 516 ha and an elevation that ranges from 1100 to 1450 m ...

Journal: :Austr. J. Intelligent Information Processing Systems 2011
Jesada Kajornrit Kevin Kok Wai Wong Lance Chun Che Fung

Ground-based rainfall observations are the primary sources of precipitation data used in most developing countries. However, those observations are frequently damaged or incomplete, thus missing data is always a problem. This comparison study examines a number of spatial interpolation methods used to estimate missing monthly rainfall data in the northeast region of Thailand. The comparison was ...

Journal: :int. journal of mining & geo-engineering 2014
mahboubeh pishbin nader fathianpour

the uniaxial compressive strength (ucs) of intact rocks is an important geotechnical parameter required for designing geotechnical and mining engineering projects. obtaining accurate estimates of the rock mass ucs parameter throughout a 3d geological model of the deposit is vital for determining optimum rock slope stability, designing new exploratory and blast boreholes, mine planning, optimizi...

Fatemeh Pouraslan Taher Rajaee, Vahid Nourani,

In this research, a hybrid wavelet-artificial neural network (WANN) and a geostatistical method were proposed for spatiotemporal prediction of the groundwater level (GWL) for one month ahead. For this purpose, monthly observed time series of GWL were collected from September 2005 to April 2014 in 10 piezometers around Mashhad City in the Northeast of Iran. In temporal forecasting, an artificial...

2007
Nargess Memarsadeghi David M. Mount

Interpolating scattered data points is a problem of wide ranging interest. One of the most popular interpolation methods in geostatistics is ordinary kriging. The price for its statistical optimality is that the estimator is computationally very expensive. We demonstrate the space and time efficiency and accuracy of approximating ordinary kriging through the use of covariance tapering combined ...

2009
Zlatko Zlatev Stuart E. Middleton Galina Veres

We have developed a domain agnostic ordinary kriging algorithm accessible via a standardsbased service-oriented architecture for sensor networks. We exploit the Open Geospatial Consortium (OGC) Sensor Web Enablement (SWE) standards. We need on-demand interpolation maps so runtime performance is a major priority. Our sensor data comes from wind in-situ observation stations in an area approximate...

Journal: :مرتع و آبخیزداری 0
محمدعلی زارع چاهوکی دانشیار دانشکدة منابع طبیعی دانشگاه تهران لیلا خلاصی اهوازی دانشجوی دکتری مرتعداری، دانشکدة مرتع و آبخیزداری، دانشگاه علوم کشاورزی و منابع طبیعی گرگان حسین آذرنیوند استاد دانشکدة منابع طبیعی دانشگاه تهران اصغر زارع چاهوکی دانشجوی دکتری آبخیزداری، دانشکدة منابع طبیعی کویرشناسی، دانشگاه یزد

the aim of this study preparation of the predicted soil maps by using kriging and inverse distance weighting methods in east rangeland of semnan. sampling was done within each unit of sampling parallel transects and 1 vertical transect with 750m length. soil samples were taken from 0-20 cm in starting and ending points of each transect. there were used kriging and inverse distance weighting met...

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