Naslov
Kriging with a Small Number of Data Points Supported by Jack- Knifing, a Case Study in the Sava Depression (Northern Croatia)

Autori
Malvić, Tomislav ; Ivšinović, Josip ; Velić, Josipa ; Rajić, Rajna

Izvornik
Geosciences (2076-3263) 9 (2019), 1; 36, 24

Vrsta, podvrsta i kategorija rada
Radovi u časopisima, članak, znanstveni

Ključne riječi
ordinary kriging ; variogram ; jack-knifing ; Upper Miocene ; Northern Croatia ; porosity

Sažetak
The semivariogram and the ordinary kriging analyses of porosity data from the Sava Depression (Northern Croatia), are presented relative to the Croatian part of the Pannonian Basin system. The data are taken from hydrocarbon reservoirs of the Lower Pontian (Upper Miocene) age, which belong to the Kloštar Ivanić Formation. The original datasets had been jack-knifed with the purpose of re- sampling and calculating the more reliable semivariograms. The results showed that such improvements can assist in the interpolation of more reliable maps. Both sets, made by the original and re- sampled data, need to be compared using geological recognition of isoline’s shapes (such as “bull-eye” or “butterfly” effects) as well as cross- validation results. This comparison made it possible to select the most appropriate porosity interpolation.

Izvorni jezik
Engleski

Znanstvena područja
Matematika, Geologija

Napomena
Results obtained on the project "Mathematical methods in geology III" and dissertation research.

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